Patent Publication Number: US-2023148092-A1

Title: Display Unit

Description:
TECHNICAL FIELD 
     The present invention relates to a display unit. 
     BACKGROUND ART 
     Conventionally, an electric/heat energy network is known in which electric energy and heat energy are fused together (see, for example, Patent Document 1). The electric/heat energy network connects, for example, a cogeneration system, a renewable energy source, an electricity storage portion, a heat storage portion, a power supply network, a heat energy supply system, a power load, and a heat load. Optimization of an energy management of the electric/heat energy network is executed by a control unit (computer). 
     PRIOR ART DOCUMENT 
     Patent Document 
     
         
         Patent Document 1: Japanese Patent No. 6423967 
       
    
     SUMMARY OF INVENTION 
     Technical Problem 
     The control unit for the energy management of the electric/heat energy network is equipped with an input unit and a display unit as man-machine interfaces. The display unit shows various entry screens, etc. By the way, when executing an operation control that uses the control unit, a control method, etc. is usually set in advance while viewing a screen displayed by a display unit. For example, it is useful to improve an operability of a setting executed while viewing a display screen. Further, for executing the optimum operation control, which accords to a customer&#39;s desire, by using the control unit, operation settings such as an energy fee setting and a setting regarding load information by time are required. Failing to properly execute the operation settings may fail to execute the optimum operation control. Further, it is useful to be able to easily execute the operation setting. 
     An object of the present invention is to provide a technology that can improve convenience of a management system that manages energy. 
     Solution to Problem 
     An exemplary display unit of the present invention is a display unit of a management system that manages energy, wherein the management system has a plurality of setting patterns, and displays a setting screen that switches between the plurality of the setting patterns for each pattern and is capable of displaying a setting pattern of the setting patterns. Another example of an exemplary display unit is a display unit of a management system that manages energy, wherein the display unit displays a schedule setting screen that enables a setting of an operation schedule for each device of the management system. 
     Advantageous Effects of Invention 
     The exemplary invention makes it possible to improve convenience of a management system that manages energy. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is an image diagram of a management system. 
         FIG.  2    is a block diagram of a system controller. 
         FIG.  3    is a schematic diagram showing a state of displaying a login screen on a screen of a display unit. 
         FIG.  4    is a schematic diagram showing a state of displaying a home screen on the screen of the display unit. 
         FIG.  5    is a schematic diagram showing a state of displaying an operation setting screen on the screen of the display unit. 
         FIG.  6    is a schematic diagram showing an example of the screen seen when a batch button is selected on a load setting screen. 
         FIG.  7    is a schematic diagram showing a state of displaying a fee setting screen on the screen of the display unit. 
         FIG.  8    is a schematic diagram showing an example of the screen seen when a period setting button is selected on the fee setting screen. 
         FIG.  9    is a schematic diagram showing a state of displaying a calendar screen on the screen of the display unit. 
         FIG.  10 A  is a diagram describing a procedure for setting any of setting patterns for each day using the calendar screen. 
         FIG.  10 B  is a diagram describing the procedure for setting any of the setting patterns for each day using the calendar screen. 
         FIG.  11    is a schematic diagram showing a load setting screen of a modified example. 
         FIG.  12    is a schematic diagram showing a state of displaying an estimated reason display screen on the screen of the display unit of the modified example. 
         FIG.  13    is a schematic diagram showing a calendar screen of another modified example. 
         FIG.  14    is a schematic diagram showing a state of displaying an operation planning screen on the screen of the display unit. 
         FIG.  15    is a diagram for describing an overview of a relation between control methods. 
         FIG.  16    is a schematic diagram showing a state of displaying a schedule setting screen on the screen of the display unit. 
         FIG.  17    is a diagram for describing the relation between the schedule setting screen and the device management screen. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     The following is a detailed description of an exemplary embodiment of the present invention with reference to the drawings. 
     &lt;1. Management System&gt; 
       FIG.  1    is an image diagram of a management system  100  according to an embodiment of the present invention. The management system  100  manages energy. That is, the management system  100  is an energy management system. In detail, the management system  100  manages electric energy and heat energy. The management system  100  is applied, for example, to a residential facility, an industrial facility, or a residential/industrial facility. 
     As shown in  FIG.  1   , the management system  100  includes a system controller  1 . The management system  100  manages electric energy and heat energy, centered on the system controller  1 . The management system  100  includes a facility that is so provided as to supply electric power (electricity-related facility) and a facility that is so provided as to supply at least one of hot heat and cold heat (heat-related facility). These facilities (devices) are controlled by the system controller  1 . 
     Note that the hot heat refers to heat that is hot, and the cold heat refers to heat that is cold. That is, when the heat is distinguished into hot heat and cold heat, the hot heat is hot heat and the cold heat is cold heat. For example, the hot heat is air with a higher temperature compared to the room temperature, and the cold heat is air with a lower temperature compared to the room temperature. The facilities shown in  FIG.  1    are merely an exemplification and may be changed to a configuration lacking any of the facilities shown in  FIG.  1    or to a configuration with an additional facility not shown in  FIG.  1   . 
     In the example shown in  FIG.  1   , the management system  100  includes a renewable energy generating unit  2  and a storage battery  3  each as the electricity-related facility described above. The renewable energy generating unit  2  and the storage battery  3  operate under the control of the system controller  1 . 
     The renewable energy generating unit  2  is a unit that generates electricity using renewable energy such as solar light, wind power, hydraulic power, and geothermal power, for example. The renewable energy generating unit  2  may be, for example, a solar power or wind power generating unit. To a power supply line of the management system  100 , the renewable energy generating unit  2  can supply the power obtained from the power generation. The storage battery  3  stores power generated by a power generation facility such as the renewable energy generating unit  2 , for example, and discharges the stored power as needed. That is, the storage battery  3  can supply power to the power supply line of the management system  100 . The storage battery  3  may be, for example, a lithium-ion battery. 
     The management system  100  is connected to a power system  10 . The power system  10  is a large commercial power system that supplies power to a power-receiving facility of the management system  100 . The management system  100  can purchase electricity from the power system  10  and receive the power supply. The system controller  1  is so provided as to control whether or not to receive power supply from the power system  10 . The system controller  1  may be so provided as to control whether or not power is supplied to the power system  10 . 
     In the example shown in  FIG.  1   , the management system  100  includes, as the heat-related facilities described above, a boiler  4 , a heat pump  5 , and a hot water tank  6 . The boiler  4 , the heat pump  5 , and the hot water tank  6  operate under the control of the system controller  1 . 
     To a heat supply line of the management system  100 , the boiler  4  can supply the steam or hot water&#39;s heat energy obtained by combustion of gas or other fuels. The heat pump  5  operates an engine fueled by a gas fuel or the like thereby to drive a compression unit for compressing a refrigerant, providing temperature control by the condensation or evaporation heat of the refrigerant. Here, the temperature control is, for example, the temperature control of the air in a room, etc. when the heat pump  5  is applied to an air conditioner, or the temperature control of a chiller circulating liquid when the heat pump  5  is applied to a chiller. The circulating liquid is typically water as an exemplification. The heat pump  5  can perform cooling operation to cool the temperature-controlled object and heating operation to heat the temperature-controlled object. That is, the heat pump  5  can switch between hot heat and cold heat, and supply the hot heat or the cold heat to the heat supply line of the management system  100 . The hot water tank  6  is connected to the boiler  4 , etc. and is capable of exchanging the water medium in the tank to hot water and storing hot heat. The heat stored in the hot water tank  6  can be supplied to the heat supply line of the management system  100 . 
     In the example shown in  FIG.  1   , the management system  100  includes a cogeneration system  7  as a facility that is commonly used for the electricity-related facility and heat-related facility described above. The cogeneration system  7  operate under the control of the system controller  1 . The cogeneration system  7  uses gas fuel or the like thereby to drive the engine, and generates electricity using a generator that is operated by the driving of the engine. The power generated by the generator can be supplied to the power supply line of the management system  100 . To the heat supply line of the management system  100 , the cogeneration system  7  can supply the steam or hot water&#39;s heat energy obtained by a waste heat recovery boiler that uses the heat (waste heat) generated by the engine. 
     To a power load included in the management system  100 , power is supplied from the renewable energy generating unit  2 , the storage battery  3 , the power system  10 , or the cogeneration system  7 . The power load includes, for example, an electric light and various types of electric devices. To a heat load included in the management system  100 , the hot heat or cold heat from the boiler  4 , the heat pump  5 , the hot water tank  6 , or the cogeneration system  7  is supplied. The heat load includes, for example, a cooling unit, a heating unit, a refrigerator, a freezer, a hot water tank, etc. 
     &lt;2. System Controller&gt; 
       FIG.  2    is a block diagram of the system controller  1  according to the embodiment of the present invention. As shown in  FIG.  2   , the system controller  1  has a control unit  11 , an input unit  12 , and a display unit  13 . That is, the management system  100  has the display unit  13 . The management system  100  further has the control unit  11  and the input unit  12 . 
     The control unit  11  controls the entire management system  100 . The control unit  11  is so configured as to include an arithmetic operation integrated circuit such as a CPU, a RAM (Random Access Memory), a ROM (Read Only Memory), etc. With the arithmetic operation integrated circuit such as the CPU executing an arithmetic processing that accords to a computer program stored in a memory such as ROM, the control unit  11  executes various functions. 
     The input unit  12  is so provided as to allow inputting of a command to the control unit  11 . The input unit  12  includes at least one of a touch screen, a keyboard, a mouse, a touch pad, a button, and a rotary knob, for example. For example, when the input unit  12  is the touch screen, the input unit  12  and the display unit  13  may be an integrated unit. The integrated unit may also include the control unit  11 . 
     The display unit  13 , under the control of the control unit  11 , displays a screen that displays various information related to the management system  100 , and an entry screen for giving the command to the control unit  11 . The display unit  13  is composed of, for example, a liquid crystal panel or an organic EL panel. The display unit  13  may include the touch screen, in which case the display unit  13  doubles as the input unit  12 , as described above. The display unit  13  may be placed near or remote to the various devices of the management system  100 . That is, the configuration of the present embodiment includes that the display unit  13  is remote to each device. 
     &lt;3. Screen Display of Display Unit&gt; 
     Next, a display on the screen of the display unit  13  will be described in detail. 
     (3-1. Overview of Screen Display) 
       FIG.  3    shows a schematic diagram showing a state of displaying a login screen  131  on a screen  130  of the display unit  13 . A person (user) who attempts to access the management system  100  is first required to enter predetermined information on the login screen  131 . That is, the screen for displaying various information related to the management system  100 , the entry screen for entering the command to the control unit  11 , and the like cannot be viewed without the user entering necessary information in the login screen  131 . 
     In the present embodiment, as shown in  FIG.  3   , the login screen  131  has a login information entry area  1311 . The login information entry area  1311  has a user name entry area  1311   a  for entering the user name, a password entry area  1311   b  for entering a password preliminarily associated with the user name, and a login button  1311   c . That is, on the login screen  131 , the user is required to enter the user name and the password. 
     The user name and the password are entered using, for example, the keyboard or the touch screen. In a configuration using the touch screen or mouse for entering, it may be so configured that the entering is executed using a software keyboard (virtual keyboard) that appears within the login screen  131 . The software keyboard may be, for example, so configured as to appear in the login screen  131  when the user touches or clicks the user name entry area  1311   a  or the password entry area  1311   b . A similar software keyboard may be used to enter letters and numbers on any type of screen other than the login screen  131 . 
     In the present embodiment, the top end portion of the login screen  131  has a header area  200  that extends in the right/left direction of the screen  130 . In addition, the bottom end portion of the login screen  131  has a footer area  300  that extends in the right/left direction of the screen  130 . The header area  200  and the footer area  300  are properly displayed on any type of screen other than the login screen  131 . The header area  200  displays, for example, a company logo, a menu related to the screen display, and the like. The footer area  300  displays, for example, time, a user name allowed to log in, and the like. 
     Operating the login button  1311   c  by touch or the like after the user name and the password are entered displays a home screen  132 . When at least one of the user name and the password is improper, an error message is displayed on the login screen  131 , failing to display the home screen  132 . 
       FIG.  4    is a schematic diagram showing a state of displaying the home screen  132  on the screen  130  of the display unit  13 . In the present embodiment, the home screen  132  is a screen designed to allow the supply and demand of the electric energy and heat energy in the management system  100  to be viewed at a glance. In the example shown in  FIG.  4   , the home screen  132  has the header area  200 . The header area  200  includes a menu area  400  that shows the type of screen display that can be selected. In the present embodiment, the menu area  400  includes a home button  401 , a status monitoring button  402 , a graph button  403 , a device management button  404 , and an operation setting button  405 . The touch screen, mouse, or keyboard, for example, may be used to operate each of the buttons  401  to  405 . 
     In the example shown in  FIG.  4   , the home screen  132  is in a selected state, so a selection display is provided to show the above selected state. In detail, a frame surrounding the home button  401  is displayed as the selection display. However, the selection display is not limited to the frame surrounding the button, but may be configured otherwise, such as a configuration of making a button different in color from another button, or a configuration of making a button different in hatching from another button. 
     Selecting the status monitoring button  402  displays a status monitoring screen. The status monitoring screen displays details of an operating status of each device included in the management system  100 . Each device includes the heat and electric devices. The heat device includes, for example, the heat-related facility described above (including a facility that is used also for the electricity-related facility) and the heat load (air conditioning facility, footbath facility, etc.). The electric device includes, for example, the electricity-related facility (including a facility that is used also for heat-related facility) and the power load described above. 
     Selecting the graph button  403  displays a graph screen. The graph screen displays, for example, a graph or the like showing the shift in magnitude of the hourly heat and power loads for one day as well as a breakdown of each device&#39;s output relative to the load. 
     Selecting the device management button  404  displays a device management screen. The device management screen displays device management information including input/output information of each device. 
     Selecting the operation setting button  405  displays an operation setting screen. The operation setting screen includes an entry screen for entering information related to the operation of the management system  100 . The information related to the operation includes information about the control method of the management system  100 . In the present embodiment, it is so configured that the operation setting screen can select whether an optimization control and a demand control are enabled or disabled. 
     The optimization control is a control method in which control is executed according to an optimization target selected by the user (typical example is a customer) using the management system  100 . The optimization targets include, for example, the cost priority which prioritizes the reduction of various fees borne by the user, the carbon dioxide emission priority which prioritizes the reduction of carbon dioxide emission generated by the device operation, and the primary energy consumption priority which prioritizes the reduction of primary energy consumption required for the device operation. In the present embodiment, the user can select any one of these three optimization targets. The user, when selecting the cost priority, executes the operation control prioritizing the cost reduction, assuming that the optimization control is set to be enabled. The user, when selecting the carbon dioxide emission priority, executes the operation control prioritizing the reduction of carbon dioxide emission, assuming that the optimization control is set to be enabled. The user, when selecting the primary energy consumption priority, executes the operation control prioritizing the reduction of primary energy consumption, assuming that the optimization control is set to be enabled. 
     The demand control is a control method that so controls the device included in the management system  100  that the power received from the power system  10  does not exceed the target demand value. The target demand value is set at the contract power or less. When the optimization control and the demand control are set to be enabled, in principle, the management system  100  operates by the optimization control, and when the power received approaches the target demand value, the management system  100  switches to the demand control. 
     As can be seen from the above description, the display unit  13  can display the information, which is managed by the management system  100 , by switching to multiple types of screens. In the example shown in  FIG.  4   , it is possible to switch to at least five different screens including the home screen, the status monitoring screen, the graph screen, the device management screen, and the operation setting screen. However, these screen displays are merely an exemplification, and the types of screens that can be displayed by the display unit  13  may be changed as needed. 
     In the example shown in  FIG.  4   , the menu area  400  includes a feed button  406 . Operating the feed button  406  by touch or the like switches the type of screen type selection button displayed in the menu area  400 . That is, the example shown in  FIG.  4    can display any screen other than the five types including the home screen, the status monitoring screen, the graph screen, the device management screen, and the operation setting screen. Examples of screens other than the five types described above include a user management screen for entering user information, and a screen setting screen for setting a screen-related condition. 
     In the example shown in  FIG.  4   , the home screen  132  has the footer area  300 . The footer area  300  includes an icon area  301  showing the user name and a time information area  302  including date and time. In the present embodiment, operating the icon area  301  by touch or the like can execute logout. As a preferred configuration, operating the icon area  301  displays a confirmation screen on the screen in a pop-up manner to confirm whether or not the logout may be executed, and the confirmation screen allowing the logout executes the logout. 
     In the present embodiment, as a preferred form, the various screens that can be selected by the menu area  400 , such as the home screen  132 , further includes a control state display area  500  that shows the control state of the management system  100 . With the above configuration; on the screen capable of grasping various types of information, the user can simultaneously obtain information on the control state of the management system  100 . That is, user convenience can be improved. 
     In the embodiment, the control state display area  500  is included in the header area  200 . In detail, the control state display area  500  is placed to the right of the menu area  400 . However, the position of the control state display area  500  may be changed as needed. In the example shown in  FIG.  4   , “Optimization” is displayed in the control state display area  500 . This shows that the management system  100  is being operated under the optimization control described above. In addition to this, “Demand Control”, “Stopped”, etc. are displayed in the control state display area  500 , for example. 
     (3-2. Operation Setting Screen) 
     [3-2-1. Overview of Operation Setting Screen] 
       FIG.  5    is a schematic diagram showing a state of displaying an operation setting screen  133  on the screen  130  of the display unit  13 . By touch or the like, operating the operation setting button  405  displayed in the menu area  400  can select the operation setting screen  133 . 
     In detail, the operation setting screen  133  includes a sub-menu area  410 . The operation setting screen  133  displays a content that accords to a button selected from buttons  411   a ,  411   b ,  411   c ,  411   d ,  411   e , and  411   f  displayed in the sub-menu area  410 . In the present embodiment, the buttons displayed in the sub-menu area  410  of the operation setting screen  133  include a load button  411   a , a fee button  411   b , a calendar button  411   c , an operation planning button  411   d , a demand control button  411   e , and a schedule control button  411   f .  FIG.  5    shows the screen seen when the load button  411   a  is selected. 
     In the present embodiment, when any screen other than the operation setting screen  133  (for example, the home screen  132 ) is displayed, selecting the operation setting button  405  automatically selects a specific button that is any of the multiple buttons  411   a - 411   e  displayed in the sub-menu area  410 , and displays the screen that corresponds to the selected button. Which button is to be designated as the specific button may be determined properly. For example, when the load button  411   a  is designated as the specific button, selecting the operation setting button  405  automatically selects the load button  411   a , displaying the screen for setting the load. 
     By the way, the energy demand in the management system  100  is not always the same every day and usually fluctuates. Meanwhile, daily energy demand tends to be similar for the same type of day. With the above in mind, the present embodiment is so configured that, for the daily operation of the management system  100 , any of the multiple patterns classified according to the type of day is used. That is, the management system  100  has a plurality of setting patterns. The types of days are, for example, each day of the week, a holiday, a weekday, etc. that make up one week. In the present embodiment, it is so configured that the display unit  13  displays a setting screen (operation setting screen)  133  that switches between a plurality of setting patterns for each pattern and is capable of displaying a setting pattern of the setting patterns. 
     This configuration allows the daily operation setting of the management system  100  to be determined by selecting from any of the plurality of setting patterns, thus while reducing the burden of operation setting of the management system  100 , making it possible to properly operate the management system  100 . Each of the plurality of setting patterns can be displayed on a separate screen, making it easier to check and enter information for each setting pattern. 
     In detail, as shown in  FIG.  5   , the operation setting screen  133  has a tab area  420  below the sub-menu area  410 . The tab area  420  displays ten different setting pattern tabs  421  including “Mon”, “Tue”, “Wed”, “Thu”, “Fri”, “Sat”, “Sun”, “Holiday”, “Special Day (1)”, and “Special Day (2)”. “Mon,” “Tue,” “Wed,” “Thu,” “Fri,” “Sat,” and “Sun” are the types of days of the week, respectively. For example, “Mon” is Monday. 
     Selecting the Monday tab out of the 10 setting pattern tabs  421  displays a Monday pattern. Selecting the Tuesday tab displays a Tuesday pattern. Selecting the Wednesday tab displays a Wednesday pattern. Selecting the Thursday tab displays a Thursday pattern. Selecting the Friday tab displays a Friday pattern. Selecting the Saturday tab displays a Saturday pattern. Selecting the Sunday tab displays a Sunday pattern. Selecting the Holiday tab displays a holiday pattern. Selecting the special day (1) tab displays a special day (1) pattern. Selecting the special day (2) tab displays a special day (2) pattern.  FIG.  5    shows a screen seen when the special day (2) tab is selected. 
     That is, in the present embodiment, any of the Monday pattern, the Tuesday pattern, the Wednesday pattern, the Thursday pattern, the Friday pattern, the Saturday pattern, the Sunday pattern, the Holiday pattern, the special day (1) pattern, and special day (2) pattern is applied to the daily operation of the management system  100 . 
     As shown in  FIG.  5   , the sub-menu area  410  of the operation setting screen  133  displays the load button  411   a  and the fee button  411   b . As can be seen from the above, the operation settings in the present embodiment include the load setting which is related to the load, and the fee setting which is related to the fee. That is, the setting patterns include, in detail, a load setting pattern and a fee setting pattern. 
     The load includes at least one of the power load and the heat load. The heat load includes at least one of the hot heat load and the cold heat load. In the present embodiment, the loads include the electric power load, the hot heat load, and the cold heat load. 
     Operating the load button  411   a  by touch or the like displays a load setting screen. The screen  133 , shown in  FIG.  5   , is the load setting screen. That is,  FIG.  5    can be expressed as a schematic diagram showing a state of displaying the load setting screen  133  on the screen  130  of the display unit  13 . Further, operating the fee button  411   b  by touch or the like displays a fee setting screen. That is, the setting screen (operation setting screen)  133  is switched between the load setting screen and the fee setting screen and is capable of displaying the above screens. 
     Operating the calendar button  411   c  in the sub-menu area  410  by touch or the like displays a calendar screen. Details of the calendar screen are to be described below. Further, operating the operation planning button  411   d  by touch or the like displays an operation planning screen. The operation planning screen is an entry screen that allows for selecting of enabling or disabling of the optimizing control and like described above, for example. Details of the operation planning screen are to be described below. By touch or the like, operating the demand control button  411   e  displays a demand control screen which is an entry screen that enables a detailed setting of the demand control. By touch or the like, operating the schedule control button  411   f  displays a schedule setting screen which is an entry screen that enables a detailed setting of the schedule control. Details of the schedule setting screen are to be described below. 
     As can be seen from the above, the operation setting screen  133  can execute displaying by switching between the load setting screen, the fee setting screen, the calendar screen, the operation planning screen, the demand control screen, and the schedule setting screen, in detail. The load setting screen, the fee setting screen, the calendar screen, the operation planning screen, and the schedule setting screen are to be described in detail below. 
     [3-2-2. Load Setting Screen] 
     The load setting screen displays a set value, for a predetermined period, of at least one of the power load, the hot heat load, and the cold heat load. The predetermined time is, for example, every hour. The load set value is an estimate of the magnitude of the load. 
     As described above, the operation setting screen  133  shown in  FIG.  5    exemplifies the load setting screen. As shown in  FIG.  5   , in the present embodiment, the load setting screen  133  displays hourly set value for the power load, the hot heat load, and the cold heat load. In detail, switching for each load setting pattern, the load setting screen  133  displays hourly set value for the power load, the hot heat load, and the cold heat load. The load setting pattern is switched using the setting pattern tab  421 , as described above. 
     In the example shown in  FIG.  5   , the special day (2) tab is selected thereby to show the hourly set values for the power load, the hot heat load, and the cold heat load on the special day (2). The screen configuration is similar for each load setting pattern. Due to this, the case in which the special day (2) tab is selected will be described as a representative example. 
     As shown in  FIG.  5   , the load setting screen  133  displays a table  1331  below the tab area  420 . The set value is displayed in each cell  1331   a  of the table  1331 . Hatched numbers in the table  1331  are the time displayed in the 24-hour system. For example, the hatched number “15” means 15:00. The set value for one day (24 hours) is displayed hourly for each of the power load, the hot heat load, and the cold heat load. 
     In the example shown in  FIG.  5   , a graph  1332  is displayed below the table  1331 . The horizontal axis of the graph  1332  is time, with 0:00 at the left end and 24:00 at the right end. The vertical axis of the graph  1332  is the load amount expressed in kilowatts. The graph  1332  is a graphical representation of the set values displayed in the table  1331 . Displaying the graph  1332  in addition to the table  1331  can make it easier to grasp changes in each load&#39;s setting values over time. 
     The load setting screen  133  is allows for a manual entry of the load set value. When wishing to modify the load set value, for example, the user can easily modify the set value. The manual entry of load set value may be used immediately after the management system  100  is introduced. It may be so configured that, after the initial set value is first entered, the control unit  11  automatically determines the set value according to an operation performance. The user may manually modify the value automatically set by the control unit  11 . 
     In the example shown in  FIG.  5   , an entry value area  1333  to enter the set value (predicted value) is provided between the tab area  420  and the table  1331 . When manually entering the set value for each of the power load, the hot heat load, and the cold heat load, the user, by touch or the like, selects the cell  1331   a  in which the set value is to be entered. In this case, the user may select one cell  1331   a  or multiple cells  1331   a . With the cell  1331   a  selected, the user enters the value which the user wishes to be set in the entry value area  1333 . After entering the value in the entry value area  1333 , the user, by touch or the like, operates a reflection button  1334  displayed next to the entry value area  1333 . In the selected cell  1331   a , this displays the value entered in the entry value area  1333 . By touch or the like, operating a deselection button  1335  displayed on the right of the reflection button  1334  can deselect the cell  1331   a . After having completed entering the value in each cell  1331   a , the user, by touch or the like, operates an application button  1336  present on the right side away from the deselection button  1335 , thereby making it possible to fix the value entered in each cell  1331   a.    
     In the present embodiment, a check box  1331   b  is displayed at the left end in each of the three load columns shown in the table  1331 . Operating the check box  1331   b  by touch or the like marks (not shown) the check box  1331   b , bringing about a state of selecting all of the cells  1331   a  of the applicable load. That is, using the check box  1331   b  can collectively enter the values in all the cells  1331   a  for the check-marked load. This is useful, for example, when multiple identical values are to be entered. 
     In the present embodiment, a batch button  422  is provided on the right end side of the tab area  420 .  FIG.  6    is a schematic diagram showing an example of the screen seen when the batch button  422  is selected on the load setting screen  133 . The basic configuration of a screen  133   a  displayed by selecting the batch button  422  is the same as that of the screen configuration (see  FIG.  5   ) seen when any of the setting pattern tabs  421  is selected. However, when the batch button  422  is selected, as shown in  FIG.  6   , the value in each cell  1331   a  of the table  1331  will be blank. On the screen  133   a  displayed by selecting the batch button  422 , the user enters the value in the entry value area  1333  in the same manner as described using  FIG.  5   , thereby making it possible to execute the load setting in a batch for all load setting patterns (10 patterns in the present embodiment, as described above). 
     That is, the load setting screen  133  displays the batch button  422  that displays the screen  133   a  that allows the manual entry of the load setting value to be executed in a batch for the plurality of setting patterns (load setting patterns in detail). When there are three types of load settings (power load, hot heat load, and cold heat load) as in the present embodiment, it may be so configured that settings for all load setting patterns are executed in a batch, collectively for all the three types or for multiple types. As another example, it may be so configured that settings of all load setting patterns are executed, separately for all three types. 
     [3-2-3. Fee Setting Screen] 
     The fee setting screen displays a set value, for each predetermined time, of the energy fee required to operate the facility of the management system  100 . The predetermined time is, for example, every hour. The energy fees include, for example, electricity and gas fees. 
       FIG.  7    is a schematic diagram showing a state of displaying a fee setting screen  133   b  on the screen  130  of the display unit  13 . The fee setting screen  133   b  is displayed when the fee button  411   b  displayed in the sub-menu area  410  is selected. As shown in  FIG.  7   , the fee setting screen  133   b  displays hourly setting values for power, gas, and cogeneration gas. In detail, switching for each fee setting pattern, the fee setting screen  133   b , displays hourly set value for power, gas, and cogeneration gas. Switching of the fee setting pattern is executed using the setting pattern tab  421 , as described above. 
     In the example shown in  FIG.  7   , the special day (2) tab is selected, thereby to show the hourly set values for power, gas, and cogeneration gas on the special day (2). The screen configuration is similar for each fee setting pattern. Due to this, the case in which the special day (2) tab is selected will be described as a representative example. 
     As shown in  FIG.  7   , the fee setting screen  133   b  displays a table  1331 X below the tab area  420 . Each cell  1331 Xa of the table  1331 X displays the set value. The hatched numbers in the table  1331 X are the time displayed in the 24-hour system. The set value for one day (24 hours) is displayed hourly for each of power, gas, and cogeneration gas. 
     In the example shown in  FIG.  7   , a graph  1332 X is displayed below the table  1331 X. The horizontal axis of the graph  1332 X is time, with 0:00 at the left end and 24:00 at the right end. The vertical axis of the graph  1332 X is the fee. In the example shown in  FIG.  7   , the unit of the fee is yen. The graph  1332 X is a graphical representation of the set value displayed in the table  1331 X. Displaying the graph  1332 X in addition to the table  1331 X can make it easier to grasp the changes in each fee&#39;s set values over time. 
     The fee setting screen  133   b  allows for a manual entry of the fee set value. When wishing to modify the fee set value, for example, the user can easily modify the set value. In the present embodiment, both the load setting screen  133  and the fee setting screen  133   b  allow for the manual entry of the set value. However, this is an exemplification, and it may be so configured that at least one of the load setting screen  133  and the fee setting screen  133   b  is a screen to allow for the manual entry of the set value. 
     In addition, since being the same as for the load setting screen  133 , the procedure for entering the set value using an entry value area  1333 X, a reflection button  1334 X, a deselection button  1335 X, and an application button  1336 X is omitted here. In addition, on the fee setting screen  133   b  as well, as in the case of the load setting screen  133 , using a check box  1331 Xb can collectively enter the values in all the cells  1331 Xa for the fee of the check-marked item. 
     Also in the fee setting screen  133   b  as well, as in the case of the load setting screen  133 , the batch button  422  is provided at the tab area  420 . Using the screen displayed by the batch button  422  makes it possible to set all fee setting patterns (10 patterns in the present embodiment as described above) in a batch. That is, the fee setting screen  133   b  displays the batch button  422  that displays the screen that allows the manual entry of the fee setting value to be executed in a batch for the plurality of setting patterns (fee setting patterns in detail). 
     When there are three types of fee settings as in the present embodiment, it may be so configured that settings for all fee setting patterns are executed in a batch, collectively for all the three types or for multiple types. As another example, it may be so configured that settings of all fee setting patterns are executed in a batch, separately for all three types. 
     In the present embodiment, the batch button is displayed on both the load setting screen  133  and the fee setting screen  133   b , which is merely an exemplification. It may be so configured that at least one of the load setting screen  133  and the fee setting screen  133   b  displays the batch button. 
     In addition, in the present embodiment, the fee setting screen  133   b  displays a season selection button  1337  that selects between a summer screen and a winter screen. This takes into account the fact that the electricity and gas pricing may change depending on the season. 
     As shown in  FIG.  7   , the season selection button  1337  includes a summer selection area  1337   a  and a winter selection area  1337   b . In  FIG.  7   , the summer selection area  1337   a  is selected. Selecting the summer selection area  1337   a  displays, in the table  1331 X and the graph  1332 X, a screen reflecting a summer set value. Also, the user can enter the summer set value by selecting the summer selection area  1337   a . Selecting the winter selection area  1337   b  displays, in the table  1331 X and the graph  1332 X, a screen reflecting a winter set value. Also, the user can enter the winter set value by selecting the winter selection area  1337   b.    
     In addition, the fee setting screen  133 B further displays a period setting button  423  that sets the summer period and the winter period. 
       FIG.  8    is a schematic diagram showing an example of the screen seen when the period setting button  423  is selected on the fee setting screen  133   b . The present embodiment allows for the setting of fees for electricity, gas, and cogeneration gas, making it possible to set the period for these three types. 
     In the example shown in  FIG.  8   , the summer period can be set for electricity. Other than the summer period is the winter period. In addition, the winter period can be set for gas and cogeneration gas. Other than the winter period is the summer period. After the period has been entered in a period entry area  1330  for each item, operating an application button  1336 Y by touch or the like fixes the set period. The electricity and gas fees used to calculate the planned value of the optimization control are determined according to the set period settings. 
     For electricity, the winter period may be set instead of the summer period. It may be so made that, for gas (including cogeneration gas), the summer period may be settable instead of the winter period. It may be so configured that, for electricity and gas (including cogeneration gas), the summer period and the winter period may be set separately. However, as in the present embodiment, with only one of the summer period and the winter period settable, causing the period other than the set period to be another period can cause less error in the period setting. 
     [3-2-4. Calendar Screen] 
     The display unit  13  further displays a calendar screen that allows for setting, using a calendar, which of the plurality of setting patterns is to be applied on each day. That is, the display unit  13  further displays the calendar screen that allows for, using the calendar, which of the plurality of setting patterns is to be applied to a predetermined day. In the present embodiment, the plurality of setting patterns have ten different setting patterns, as described above. 
       FIG.  9    is a schematic diagram showing a state of displaying a calendar screen  133   d  on the screen  130  of the display unit  13 . The calendar screen  133   d  is displayed by selecting the calendar button  411   c  displayed in the sub-menu area  410  in the operation setting screen  133 . 
     In the present embodiment, as shown in  FIG.  9   , the calendar screen  133   d  displays a first calendar  1338   a  and a second calendar  1338   b . The second calendar  1338   b  is a calendar of the month following the first calendar  1338   a . By touch or the like, operating a backward month button  601  placed on the left side of the first calendar  1338   a , and a forward month button  602  placed on the right side of the second calendar  1338   b  can change a calendar displayed on the calendar screen  133   d.    
     In the example shown in  FIG.  9   , the first calendar  1338   a  is the calendar for February, and the second calendar  1338   b  is the calendar for March. Operating the backward month button  601  by touch or the like makes the first calendar  1338   a  the calendar for January, and the second calendar  1338   b  the calendar of February. Operating the forward month button  602  by touch or the like makes the first calendar  1338   a  the calendar for March, and the second calendar  1338   b  the calendar for April. The number of calendars displayed on the calendar screen  133   d  may be one, three or more. The month unit to be changed by the backward month button  601  and the forward month button  602  may not be one month, but may be two months. 
     As shown in  FIG.  9   , the calendar screen  133   d  displays, on the right side of the second calendar  1338   b , four buttons that are positioned apart from the forward month button  602 . The four buttons include an application button  1336 Z, a holiday button  1339   a , a special day (1) button  1339   b , a special day (2) button  1339   c , and a cancellation button  1339   d . In addition, a deselection button  1335 Y is displayed on the upper left side of the first calendar  1338   a . These six buttons  1335 Y,  1336 Z,  1339   a  through  1339   d  are used to determine the setting pattern to be applied to each day. Note that these six buttons  1335 Y,  1336 Z,  1339   a  through  1339   d  may be rearranged as needed. 
     Each of the calendars  1338   a  and  1338   b  has a rectangular calendar cell  1338   c  into which each day is entered. The display state of calendar cell  1338   c  varies depending on the type of the applied setting pattern. In the example shown in  FIG.  9   , when a day-of-week pattern of the day of the week to which a relevant day entered in the calendar cell  1338   c  belongs is applied to the relevant day, the background for the black number in the calendar cell  1338   c  is white. When the day-of-week pattern of the day of the week to which the relevant day belongs is applied, it means, for example, that if the day of the week to which the relevant day belongs is Monday, the Monday pattern is applied as the setting pattern. 
     When the holiday pattern is applied to the setting pattern, the background for the black number in the calendar cell  1338   c  is the same as the background for the text in the holiday button  1339   a . When the special day (1) pattern is applied to the setting pattern, the background for the black number in the calendar cell  1338   c  is the same as the background for the text in the special day (1) button  1339   b . When the special day (2) pattern is applied to the setting pattern, the background for the black number in the calendar cell  1338   c  is the same as the background of the text in the special day (2) button  1339   c.    
     According to the calendar screen  133   d  shown in  FIG.  9   , to February 3, for example, a pattern of Monday which is the day of the week to which the relevant day belongs (Monday pattern) is applied as the setting pattern. For example, to February 24, the holiday pattern is applied as the setting pattern, instead of the pattern of Monday which is the day of the week to which the relevant day belongs. 
       FIG.  10 A  and  FIG.  10 B  are each a diagram describing a procedure for setting any of the setting patterns for each day using the calendar screen  133   d . In detail,  FIG.  10 A  is the diagram in the process of setting, and  FIG.  10 B  is the diagram after setting. 
     By touch or the like, the user first selects the calendar cell  1338   c  for the day to be set. In this case, the user may select only one calendar cell  1338   c , or multiple calendar cells  1338   c . In  FIG.  10 A , the user has selected multiple calendar cells  1338   c . In  FIG.  10 A , the selected calendar cells  1338   c  are shown by a dashed frame. In detail, for February, the calendar cells  1338   c  are selected for the days that belong to Mondays except the 24th, and for March, all calendar cells  1338   c  for the days that belong to Mondays are selected. The selection can be canceled by operating the deselection button  1335 Y. 
     With the calendar cells  1338   c  selected, the user select any of the holiday button  1339   a , the special day (1) button  1339   b , the special day (2) button  1339   c , and the cancellation button  1339   d . In  FIG.  10 A , the special day (1) button  1339   b  is selected. With the special day (1) button  1339   b  selected, as shown in  FIG.  10 B , the currently selected calendar cell  1338   c  displays the special day (1). Selecting the application button  1336 Z in this state fixes the setting pattern for each day. 
     Note that in the above example, selecting the holiday button  1339   a  instead of the special day (1) button  1339   b  causes the selected calendar cell  1338   c  to display holiday, applying the holiday setting pattern to the day that is displayed as the holiday. In addition, selecting the special day (2) button  1339   c  instead of the special day (1) button  1339   b  causes the selected calendar cell  1338   c  to display the special day (2), applying the special day (2) setting pattern to the day displayed as the special day (2). 
     By the way, the cancellation button  1339   d  is used to cancel the setting patterns, which are specially set other than the day of the week, such as the holiday pattern, the special day (1) pattern, and the special day (2) pattern. Due to this, in the previously described example, selecting the cancellation button  1339   d  instead of the special day (1) button  1339   b  executes the deselecting without any change to the display of the selected calendar cell  1338   c . For example, selecting the cancellation button  1339   d  with the calendar cell  1338   c  for February 24 being selected causes the calendar cell  1338   c  for February 24 to be displayed with a white background for the black number. Then, on February 24, the pattern for Monday, which is the day of the week to which the relevant day belongs (Monday Pattern), will be applied as the setting pattern. 
     [3-2-5. Modified Examples] 
       FIG.  11    is a schematic diagram of a load setting screen  133 X of a modified example. The load setting screen  133 X shown in  FIG.  11    is generally the same as the load setting screen  133  shown in  FIG.  5    described above. The screen  133 X shown in  FIG.  11    is displayed as a screen showing an operation setting on the next day. In detail, it is assumed that a state in which the next day is estimated to be the day to which the special day (2) pattern should be applied, selecting the special day (2) tab of the setting pattern tab  421 . In displaying an estimated reason button  424  in the tab area  420 , the load setting screen  133 X shown in  FIG.  11    differs from the example shown in  FIG.  5   . 
     In the modified example, the management system  100  is so provided as to be able to estimate the setting pattern to be applied at least on the next day. In a preferred form, the management system  100  is so provided as to be able to estimate the load setting pattern to be applied at least on the next day. In the present embodiment, the load setting pattern obtained by the estimation is any of the ten patterns described above. It may be so configured as to estimate only the load setting pattern on the next day, or may be so configured as to estimate the load setting pattern to be applied to multiple days after the next day. The estimation of the load setting pattern to be applied is executed by the control unit  11 . 
     The estimated reason button  424  described above is a button for displaying an estimated reason for the setting pattern to be applied (in this example, the load setting pattern). Operating the estimated reason button  424  by touch or the like displays an estimated reason display screen showing the estimated reason. That is, the display unit in the modified example further displays the estimated reason display screen showing the estimated reason for the setting pattern (in this example, the load setting pattern). 
       FIG.  12    is a schematic diagram showing a state of displaying an estimated reason display screen  133 X 1  on the screen  130  of the display unit of the modified example. The estimated reason display screen  133 X 1  shown in  FIG.  12    is a screen displayed with the estimated reason button  424  selected on the screen  133 X shown in  FIG.  11   . As shown in  FIG.  12   , the estimated reason display screen  133 X 1  includes an estimated reason display area Ar showing the estimated reason and a graph area Gr showing a graph related to the estimated reason. In the present modified example, the estimated reason display area Ar is the portion that explains the estimated reason by text. The graph area Gr shows, for example, a graph or the like showing the basis for the estimated reason. 
     In the example shown in  FIG.  12   , the horizontal axis of the graph shown in the graph area Gr is the maximum daily temperature and the vertical axis is the maximum cold heat load. The graph shown in  FIG.  12    plots actual values for several previous days. The graph shows a result of grouping the past performance values by a grouping algorithm using, for example, artificial intelligence (AI). In detail, the grouping is executed based on whether or not the day falls under the special day (2) (e.g., a busy day). Any day that could not be determined whether or not being the special day (2) is classified as being not determined. By whether or not the maximum daily temperature exceeds 29° C., the graph can determine whether or not the day is the special day (2). The example shown in  FIG.  12   , from the fact that the maximum temperature on the next day is expected to be 35° C. and from a determination method that is based on the above graph and that is based on a threshold value of 29° C., estimates that the next day is the special day (2), displaying, in the estimated reason display area Ar, that the setting pattern is the special day (2) pattern. Providing the graph area Gr makes it easy for the user to determine the validity of the estimated reason. 
     The user who has determined that the estimated reason is not valid may, for example, change the load setting value on the load setting screen, or change, on the calendar screen, the setting pattern that corresponds to a relevant day. 
       FIG.  13    is a schematic diagram showing a calendar screen  133 Y of another modified example. As shown in  FIG.  13   , an estimated reason button  424 A may be displayed on the calendar screen  133 Y. The position of the estimated reason button  424 A shown in  FIG.  13    is an exemplification, and may be changed as needed. In the example shown in  FIG.  13   , operating, by touch or the like, the estimated reason button  424 A with the calendar cell  1338   c  selected displays, in a pop-up manner, an estimated reason display screen  133 Y 1  that displays the estimated reason. In the example shown in  FIG.  13   , no graph area is provided on the estimated reason display screen  133 Y 1 , but the graph area may be provided. The pop-up display is an exemplification, and the estimated reason display screen that displays the estimated reason may be switched from the calendar screen  133 Y. 
     [3-2-6. Operation Planning Screen] 
     The operation planning screen displays the setting related to the control method of the management system  100 . The operation planning screen is an entry screen that allows for the setting related to the control method of the management system  100 .  FIG.  14    is a schematic diagram showing a state of displaying an operation planning screen  133   e  on the screen  130  of the display unit  13 . The operation planning screen  133   e  is displayed by selecting an operation planning button  411   d  displayed in the sub-menu area  410  on the operation setting screen  133 . 
     In the present embodiment, as shown in  FIG.  14   , the operation planning screen  133   e  displays an enable/disable selection area  133 A 1  that allows for a selection between enabling and disabling of four control methods including the optimizing control, the customizing control, the demand control, and the schedule control. In detail, the operation planning screen  133   e  displays four enable/disable selection areas  133 A 1 . Each enable/disable selection area  133 A 1  is displayed next to (right next to) the name of the control method. Each enable/disable selection area  133 A 1  displays both “Enable” and “Disable” characters when touched or otherwise operated. Selecting any of “Enable” and “Disable” displayed can determine whether to enable or disable. In the example shown in  FIG.  14   , “Enable” is selected for the optimizing control and the demand control, and “Disable” is selected for the customizing control and the schedule control. 
     The customizing control is a control method that is set according to a request of each customer using the management system  100 , and can be considered a modified version of the optimizing control. Further, the scheduling control is a control method that controls a device according to the operation schedule settings for each device of the management system  100 . The scheduling control is executed when, for example, the optimizing control is disabled or when there is no optimal planning value. The case of being no optimal planning value includes, for example, a case where an error occurs, failing to acquire the optimal planning value. Details of setting up the operation schedule are to be described below. 
     The optimizing control, the customizing control, the demand control, and the schedule control can be optionally switched between enabling and disabling, respectively. For example, in addition to the example shown in  FIG.  14   , with the optimizing control only enabled, the other control methods can be disabled, for example. Further, with the schedule control only enabled, the other control methods can be disabled, for example. For example, the optimizing control, the customizing control, the demand control, and the schedule control can all be set to be enabled. For example, all control methods including the optimizing control, the customizing control, the demand control, and the schedule control can be set to disabled. 
       FIG.  15    is a diagram for describing an overview of a relation between control methods. In  FIG.  15   , an optimizing control subject device is a device that is possessed by the management system  100  and that is a subject of the optimizing control. Other devices are devices that are possessed by the management system  100  and that are not subjects of the optimizing control. All devices possessed by the management system  100  may be the optimizing control subject devices. Further, the devices possessed by the management system  100  may include the optimizing control subject device and the other device. All of the devices possessed by the management system  100  may be other devices. 
     As shown in  FIG.  15   , a control command value of each of the optimizing control subject devices is updated when five control reasons including “Device Stop”, “Schedule Control”, “Optimizing Control”, “Customizing Control”, and “Demand Control” are respectively established. In addition, a control command value of each of the other devices is updated when “Schedule Control” and “Customizing Control” are respectively established. Note that “Device Stop” is established when, for example, the schedule control, the optimizing control, the customizing control, and the demand control are all disabled. 
     For example, when only the schedule control is enabled on the operation planning screen  133   e , the control command value will be output as a value updated by the establishment of the schedule control. For example, when only the optimizing control is enabled on the operation planning screen  133   e , the control command value will be output as a value updated by the establishment of the optimizing control. For example, when the optimizing control and the schedule control are enabled on the operation planning screen  133   e , the operation will be as follows. When the optimizing control is established as the control reason, the control command value will be output as a value updated by the establishment of the optimizing control. Meanwhile, when the optimizing control is not established as the control reason, the control command value will be output as a value updated by the establishment of the schedule control. 
     When multiple control reasons are established, the control command value finally output to each device has priority for the command value updated for the control reason described at the bottom in  FIG.  15   . For example, assume that the optimizing control and the demand control are enabled on the operation planning screen  133   e . In this case, when the control reason for both the optimizing control and the demand control is established, the command value updated by the establishment of the demand control will be given priority to be output to the device. 
     As described above, the configuration of the present embodiment is proper for the configuration that includes the schedule control as a control method of the management system  100 . The display unit  13  displays a setting switching screen (operation planning screen  133   e ) that allows for the switching between enabling and disabling of the schedule control. Further, the setting switching screen is so provided as to be switchable between enabling and disabling of a control method different from the schedule control. Control methods that differ from the scheduling control include the optimizing control that controls the device according to a predetermined optimization target. In detail, the control methods that differ from the schedule control include the optimizing control, the customizing control, and the demand control. 
     As shown in  FIG.  14   , in the present embodiment, the operation planning screen  133   e  displays an optimization target selection area  133 A 2  that allows for a selection of the type of the optimization target described above. In this example, the optimization target selection area  133 A 2  displays the characters “Cost” showing cost priority, “CO2” showing carbon dioxide emission priority, and “Primary Energy” showing primary energy consumption priority. By touch or the like, selecting the circled mark displayed to the left of each item can determine the type of optimization target. 
     As shown in  FIG.  14   , the operation planning screen  133   e  also displays an application button  1336 S near the upper right side of the screen. By touch or the like, operating the application button  1336 S can fix the selection result of the enable/disable selection area  133 A 1  in each control method, and the selection result of the optimization target selection area  133 A 2 . 
     Further, in the present embodiment, the control method includes the schedule control, as described above. Due to this, as shown in  FIG.  16    below, the control state display area  500  can display “Schedule” other than “Optimizing”, “Demand,” and “Stopped”. That is, the display unit  13 , during the executing of the schedule control that controls the device according to the setting of the operation schedule, displays that the schedule control is being executed. 
     As described above, the control state display area  500  is displayed on various screens, such as the home screen. That is, when the schedule control is being executed, “Schedule” showing that the schedule control is being executed is displayed in the control state display area  500 , on a screen other than the screen shown in  FIG.  13   . 
     [3-2-7. Schedule Setting Screen] 
     As described above, the display unit  13  shows the schedule setting screen. The schedule setting screen allows for a setting of the operation schedule for each device of the management system  100 . The operation schedule for each device is entered by the schedule setting screen, making it possible to execute the schedule control when, for example, the optimizing control is disabled. 
       FIG.  16    is a schematic diagram showing a state of displaying a schedule setting screen  133   f  on the screen  130  of the display unit  13 . Selecting the schedule control button  411   f  displayed in the sub-menu area  410  on the operation setting screen  133  selects the schedule setting screen  133   f . In addition, the schedule setting screen  133   f  is displayed even when the schedule control is disabled on the operation planning screen  133   e , making it possible to enter the operation schedule. 
     As shown in  FIG.  16   , on the schedule setting screen  133   f  as well, like on the load setting screen (see  FIG.  5   ) and the fee setting screen (see  FIG.  7   ), the tab area  420  is displayed below the sub-menu area  410 . The tab area  420  displays ten different setting pattern tabs  421  including “Mon”, “Tue”, “Wed”, “Thu”, “Fri”, “Sat”, “Sun”, “Holiday”, “Special Day (1)”, and “Special Day (2)”. 
     That is, setting patterns of the schedule control include any of the Monday pattern, the Tuesday pattern, the Wednesday pattern, the Thursday pattern, the Friday pattern, the Saturday pattern, the Sunday pattern, the Holiday pattern, the special day (1) pattern, and the special day (2) pattern. The schedule setting screen  133   f  is so provided as execute displaying by switching for each type of day. Further,  FIG.  16    shows the screen seen when the special day (1) tab of the ten setting pattern tabs  421  is selected. 
     As shown in  FIG.  16   , the schedule setting screen  133 F displays a schedule setting table  133 A 3  below the tab area  420 . The schedule setting table  133 A 3  is used, making it possible to enter the setting related to the schedule control. 
     It is preferable that items that can be set on the schedule setting screen  133   f  include at least one of the type of device, a time zone for executing control, and control content. It is more preferable that the items that can be set on the schedule setting screen  133   f  include at least the time zone for executing control. In the present embodiment, the items that can be set on the schedule setting screen  133   f  include the type of device, the time zone for executing control, and the control content. In detail, the setting items of schedule setting table  133 A 3  include the type of device, the time zone for control, and the control content. 
     In the schedule setting table  133 A 3 , each of the multiple cells vertically arranged below “Device” is a portion for entering the subject device for setting the schedule control. For example, the “Device” can be set (entered) by selecting a registered device displayed by operating, such as touching, a relevant entry area (cell). In the example shown in  FIG.  16   , the registered devices include a CP, a boiler, and an absorption type water chiller/heater. The CP is a symbol indicating a cogeneration system. The number of registered devices can be optionally set, and may be other than three. 
     In the schedule setting table  133 A 3 , each of the multiple cells vertically arranged below “Start Time” is a portion for entering the time to start the schedule control. Further, each of the multiple cells vertically arranged below “End Time” is a portion for entering the time to end the schedule control. The “Start Time” and “End Time” can be set (entered) by using, for example, a soft keyboard that appears by operating, such as touching, the relevant entry area (cell). 
     In the schedule setting table  133 A 3 , each of the multiple cells vertically arranged below “Control 1” and “Control 2” is a portion for entering the specific control content of the device as the subject of the schedule control. In this example, the configuration allows for two types of control contents to be entered as control contents, but this is merely an exemplification. It may be so configured that only one type of control content can be entered, or three or more types can be entered. 
     The control content is determined by the type of the control subject device. In the present embodiment, “Control 1” is a portion for entering any digital (selecting one out of two) control content. The “Control 1” can be set (entered), for example, by selecting a to-be-displayed selection item by operating, such as touching, the relevant entry area (cell). For example, when the control subject device is the CP, “Enable” and “Disable” are displayed as selection items. For example, when the control subject device is a boiler or an absorption type water chiller/heater, “Operation” and “Stop” are displayed as selection items. 
     Further, in the present embodiment, the “Control 2” is a portion for entering an analogous control content. The “Control 2” can be set (entered) by using, for example, a soft keyboard that appears by operating, such as touching, the relevant entry area (cell). For example, when the control subject device is the CP or the boiler, a control command value for each device is entered. Entering the control command value automatically displays a unit. For example, when the control subject device is the CP, the control command value is a value related to the generated power, automatically displaying a unit kW after the entering of a numerical value. When the control subject device is the boiler, the control command value is a value related to a liquid temperature, automatically displaying a unit ° C. after the entering of the numerical value. In the present embodiment; when the control subject device is the absorption type water chiller/heater, Control 2 cannot be entered, as an example. 
     In the present embodiment, the schedule setting screen  133 F displays a switching area  133 A 4  that allows for switching between enabling and disabling of the setting content for each device. The switching area  133 A 4  is, in detail, a check box area  133 A 4  displayed for each line at the leftmost end of the schedule setting table  133 A 3 . The position of check box area  133 A 4  may be changed as needed, for example, may be placed at the right end instead of the left end. 
     Making an operation such as touching while a check mark (not shown) is not displayed in the check box area  133 A 4  displays the check mark in the check box area  133 A 4 . Meanwhile, making the operation such as touching while the check mark is displayed in the check box area  133 A 4  deletes the check mark in the check box area  133 A 4 . 
     When the check mark is displayed, the setting is considered enabled. When the check mark is not displayed, the relevant setting content is considered disabled even if a set value, etc. has been entered. Providing the above check box area  133 A 4  is convenient because the user only needs to execute the switching operation of the check box area  133 A 4  when wishing to temporarily make the switching operation between enabling and disabling of the schedule control. 
     In the present embodiment, the setting content newly set in the schedule setting screen  133   f  is fixed by operating, such as touching, an application button  1336 T on the upper right side of the schedule setting table  133 A 3 . If the application button  1336 T is not operated after the new setting is entered, the management system  100  does not execute the operation that reflects the newly entered setting content. 
     In the present embodiment, the schedule setting screen  133   f  is so provided as to enable the setting that is made to correspond to the setting executed on the calendar screen  133   d  (see  FIG.  9   ). In other words, the display unit  13  displays the calendar screen  133   d  which is so provided as to allow for the setting that is made to correspond to the setting executed on the schedule setting screen  133   f.    
     In detail, the setting of the type of day on the schedule setting screen  133   f  and the setting of the type of day on the calendar screen  133   d  are made to correspond to each other. For example, assume that the setting of the calendar screen  133   d  on the operation day of the management system  100  is the Monday pattern. In this case, the schedule control is to be operated in the setting pattern displayed when the “Month” (setting pattern tab  421 ) is selected in the tab area  420  of the schedule setting screen  133   f . Further, assume that the setting of the calendar screen  133   d  on the operation day of the management system  100  is the Special day (1) pattern, for example. In this case, the schedule control is to be operated in the setting pattern displayed when “Special day (1)” (setting pattern tab  421 ) is selected in the tab area  420  of the schedule setting screen  133   f.    
     The following operation may be executed by using the fact that the setting of the type of day on the schedule setting screen  133   f  and the setting of the type of day on the calendar screen  133   d  are made to correspond to each other. 
     For example, when the date selected on the calendar screen  133   d  has the schedule control&#39;s setting pattern that corresponds to the type of day set for the above date, the calendar screen  133   d  may display to that effect in a pop-up manner. It is so configured that displaying the calendar screen  133   d  automatically selects the above date on the calendar screen  133   d . In the above configuration, when the schedule control&#39;s setting pattern that corresponds to the type of day of the above date, the above pop-up display is to be executed at the same time as the displaying of the calendar screen  133   d.    
     Further, for example, when the schedule setting screen  133   f  is displayed, the screen of the type of day same as the type of day set on the calendar screen  133   d  may be displayed as priority. Here, as an example, assume that the setting of the type of day on the calendar screen  133   d  on the day of displaying the schedule setting screen  133   f  is the special day (1). In this example, when the schedule control button  411   f  is operated thereby to display the schedule setting screen  133   f , “Special Day (1)” is automatically selected in the tab area  420  thereby to display the schedule setting screen. 
       FIG.  17    is a diagram for describing the relation between the schedule setting screen  133   f  and a device management screen  134 . In  FIG.  17   , the schedule setting screen  133   f  is shown at the upper step, and the device management screen  134  is shown in the lower step. In  FIG.  17   , the management system  100  executes the schedule control according to the setting of the schedule setting screen  133   f.    
     In the present embodiment, as described above, the display unit  13  is so provided as to be capable of displaying the device management screen  134  that shows the control state of each device. The device management screen  134  is displayed by operating, such as touching, the device management button  404 . 
     In the device management screen  134  shown in  FIG.  17   , the “Management Address” is an address defined in the control unit  11  (see  FIG.  2   ). “Type” shows classification of input or output. “Item Name” is a specific name of a subject whose input or output is managed. “Current State” shows the current state of the input or output of each item managed by using the management address. “Control Reason” shows a control-related reason for the fact that the input or output of each item managed by using the management address is in the current state. “Manual Setting” displays information related to the manual setting of the input or output information of each item managed by using the management address. 
     As shown in  FIG.  17   , the device management screen  134  makes a displaying that reflects the setting of the schedule setting screen  133   f . In detail, when the predetermined condition is satisfied, the device management screen  134  makes the displaying that reflects the setting of the schedule setting screen  133   f . The predetermined condition is satisfied when the scheduling control is executed. 
     In the example shown in  FIG.  17   , it is so set that, on the schedule setting screen  133   f , the upper command value of the generated power is enabled at 25 kW for the CP (cogeneration device) from 7:00 to 18:59. Then, when the schedule control that accords to the above setting pattern is executed, the device management screen  134  makes the displaying that reflects the setting of the schedule setting screen  133   f . Specifically, the device management screen  134  displays that the item name “CP External Operation Command” is “Enabled” by “Schedule Control”. In addition, the device management screen  134  displays that the item name “CP Power Upper Limit Command Value” is “25 kW”. 
     &lt;4. Notes, Etc.&gt; 
     The various technical features disclosed in the present specification can be modified in various ways without departing from the gist of the technical creation thereof. Further, the multiple embodiments and modified examples shown in the present specification may be combined to the extent possible. 
     &lt;5. Appendices&gt; 
     An exemplary display unit in the present specification is a display unit of a management system that manages energy, wherein the display unit may have a configuration where the display unit displays a schedule setting screen that enables a setting of an operation schedule for each device of the management system (first configuration). 
     The display unit of the first configuration may have a configuration where the display unit displays a setting switching screen that allows for a switching between enabling and disabling of a schedule control that controls the device according to the setting of the operating schedule (second configuration). 
     The display unit of the second configuration may have a configuration where the setting switching screen is so provided as to allow for the switching between enabling and disabling of a control method different from the schedule control (third configuration). 
     The display unit of the third configuration may have a configuration where the control method different from the schedule control includes an optimizing control that controls the device according to a predetermined optimization target (fourth configuration). 
     The display unit of any of the first to fourth configurations may have a configuration where the display unit displays a calendar screen that is so set as to allow for a setting that is made to correspond to the setting executed on the schedule setting screen (fifth configuration). 
     The display unit of the fifth configuration may have a configuration where the schedule setting screen is so provided as to be displayable by being switched for each type of day, and when the schedule setting screen is displayed, a screen of a type of day same as a type of day set on the calendar screen is displayed as priority (sixth configuration). 
     The display unit of any of the first to sixth configurations may have a configuration where the display unit is so provided as to be capable of displaying a device management screen that displays a control state of each device, and the device management screen makes a displaying that reflects the setting of the schedule setting screen (seventh configuration). 
     The display unit of any of the first to seventh configurations may have a configuration where an item settable on the schedule setting screen includes at least one of a type of the device, time for executing the control, and control content (eighth configuration). 
     The display unit of any of the first to eighth configurations may have a configuration where the schedule setting screen displays a switching area that allows for a switching between enabling and disabling of setting content for each device (ninth configuration). 
     The display unit of any of the first to ninth configurations may have a configuration where the display unit displays, during an executing of the schedule control that controls the device according to the setting of the operation schedule, that the schedule control is being executed (tenth configuration). 
     REFERENCE SIGNS LIST 
     
         
           13 : display unit 
           100 : management system 
           133 A 4 : check box area (switching area) 
           133 ,  133 X: operation setting screen, load setting screen 
           133   b : fee setting screen 
           133   d ,  133 Y: calendar screen 
           133   e : operation planning screen (setting switching screen) 
           133   f : schedule setting screen 
           133 X 1 ,  133 Y 1 : estimated reason display screen 
           134 : device management screen 
           422 : batch button 
           423 : period setting button 
           1337 : season selection button