COMMUNICATION INSTRUCTION MANUAL

AER-102-ECH (C5)

No. AER11CECE5 2019.06
This manual contains instructions for communication functions of the AER-102-ECH.
To prevent accidents arising from the misuse of this instrument, please ensure the operator receives thismanual.

Warning
Turn the power supply to the instrument off before wiring or checking.
Working on or touching the terminal with the power switched on may result in severe injury or
death due to electrical shock.

1. System Configuration
System configuration example using Communication converter IF-400 and USB communication
cable CMC-001-1
When using Communication converter IF-400

Host computer

Communication converter
IF-400 (sold separately)
RS-232C
RS-485
AER-102-ECH
No. 0

No. 1

No. 30(Fig. 1-1)
When using USB communication cable CMC-001-1
Host computer
USB communication cable
CMC-001-1 (sold separately)USB

AER-102-ECH
No. 0

RS-485(Fig. 1-2)
1

No. 1

No. 302. Wiring
Wiring example using Communication converter IF-400 and USB communication cable CMC-001-1
When using communication converter IF-400:
Use the provided wire harness (C0J: Between IF-400 and AER-102- ECH, C5J: Between AER-102-ECH
units), shield wire and CDM (sold separately).
When using USB communication cable CMC-001-1:
Use the provided wire harness (C0J: Between IF-400 and AER-102- ECH, C5J: Between AER-102-ECH
units).
• When using communication converter IF-400• When using USB communication cable CMC-001-1

Communication converter
IF-400(sold separately)

Host computer

Shieldwire

Host computerFG
USB communication
cable CMC-001-1(sold separately)

Terminal block (commercially available)
is used to relay CMC-001-1 and C0J.

Terminal block (commercially available)
is used to relay CDM and C0J.
Yellow

Yellow

Blue
Black

Blue
Black

CDM (sold separately)

No. 0

AER-102-ECH (max.31 units)
No. 1

No. 30

C5J

C0J
C5J

2 connecters are wired internally.

(Fig. 2-1)
Shield Wire
Connect only one end of the shield to the FG or GND terminal to avoid a ground loop. If both ends of theshield wire are connected to the FG or GND terminal, the circuit will be closed, resulting in a ground loop.
This may cause noise. Be sure to ground the FG or GND terminal.
Recommended cable: OTSC-VB 2PX0.5SQ (made by Onamba Co., Ltd.) or equivalent (use a twisted paircable.)
2

Terminator (Terminal Resistor)
Communication converter IF-400 (sold separately) has a built-in terminator.
The terminator is mounted at the end of the wire when connecting a personal computer with multiple
peripheral devices. The terminator prevents signal reflection and disturbance.
Do not connect a terminator to the communication line because each AER-102-ECH has built-in pull-up
and pull-down resistors.

3. Setting Communication Parameters
Communication parameters can be set in the Basic Function Group.
To enter the Basic Function Group, follow the procedure below.
Press thekey 5 times in Conductivity/Temperature Display Mode.
key 7 times in
If EVT3, EVT4 outputs (EVT3 option) are/is ordered, press the(1)

Conductivity/Temperature Display Mode.
Press the(2)(3) Make a selection using theCharacterkey twice. “Communication protocol” item will appear.
or

key, and register the value by pressing theSetting Item, Function, Setting Range
Communication protocol

key.

Factory Default
Shinko protocol• Selects communication protocol.
: Shinko protocol•: MODBUS ASCII mode
: MODBUS RTU mode
Instrument number0• Sets the instrument number of this unit. (The instrument numbers should be set one
by one when multiple instruments are connected in Serial communication, otherwise
communication is not possible.)• Setting range: 0 to 95
Communication speed
9600 bps• Selects a communication speed equal to that of the host computer.
: 9600 bps•: 19200 bps: 38400 bps(4) Press theData bit/Parity• Selects data bit and parity.
: 8 bits/No parity•: 7 bits/No parity: 8 bits/Even: 7 bits/Even: 8 bits/Odd: 7 bits/Odd

7 bits/Even

Stop bit• Selects the stop bit.
: 1 bit•: 2 bits

1 bit

key multiple times. The unit will revert to Conductivity/Temperature Display Mode.

34. Communication ProcedureCommunication starts with command transmission from the host computer (hereafter Master), andends with the response of the AER-102-ECH (hereafter Slave).
MasterCommand
Data

Slave

Command
Acknowledgement
Command
Negative
acknowledgement
Command
No response(Fig.4-1)• Response with data
When the master sends the reading command, the slave
responds with the corresponding set value or current status.
• Acknowledgement
When the master sends the setting command, the slave
responds by sending acknowledgement after theprocessing is terminated.
• Negative acknowledgement
When the master sends a non-existent command or value
out of the setting range, the slave returns a negative
acknowledgement.
• No response
The slave will not respond to the master in the following cases:• Global address (Shinko protocol) is set.
• Broadcast address (MODBUS protocol) is set.
• Communication error (framing error, parity error)• Checksum error (Shinko protocol), LRC discrepancy (MODBUSASCII mode), CRC-16 discrepancy (MODBUS RTU mode)

Communication Timing of the RS-485
Master Side (Take note while programming)
When the master starts transmission through the RS-485 communication line, the master is arranged so
as to provide an idle status (mark status) transmission period of 1 or more characters before sending thecommand to ensure synchronization on the receiving side.
Set the program so that the master can disconnect the transmitter from the communication line within a
1 character transmission period after sending the command in preparation for reception of the response
from the slave.
To avoid collision of transmissions between the master and the slave, send the next command after
carefully checking that the master has received the response.
If a response to the command is not returned due to communication errors, set the Retry Processing
to send the command again. (It is recommended to execute Retry twice or more.)
Slave Side
When the slave starts transmission through the RS-485 communication line, the slave is arranged so as
to provide an idle status (mark status) transmission period of 1 or more characters before sending the
response to ensure synchronization on the receiving side.
The slave is arranged so as to disconnect the transmitter from the communication line within a 1 charactertransmission period after sending the response.

4

5. Shinko Protocol

5.1 Transmission Mode
Shinko protocol is composed of ASCII codes.
Hexadecimal (0 to 9, A to F), which is divided into high order (4-bit) and low order (4-bit) out of 8-bit
binary data in command is transmitted as ASCII characters.
Data format
Start bit: 1 bit
Data bit: 7 bits
Parity: Even
Stop bit: 1 bit
Error detection: Checksum
5.2 Command Configuration
All commands are composed of ASCII.
The data (set value, decimal number) is represented by hexadecimal numbers.
Negative numbers are represented in 2's complement.
Numerals written below the command represent number of characters.
(1) Setting Command
Sub
Data
Command
Header
Data
Checksumaddress
Address
item
type (50H)
(02H)
(20H)
1
1
1
1
4
4
2

Delimiter(03H)
1(2) Reading Command
Header(02H)

Address

1

1

Sub
address(20H)
1Commandtype (20H)

Data
item

Checksum

Delimiter
(03H)

1

4

2

1

Commandtype (20H)

Data
item

Data

Checksum

Delimiter
(03H)

1

4

4

2

1

(3) Response with Data
Header(06H)

Address

1

1(4) Acknowledgement
HeaderAddress
(06H)
1
1

Sub
address(20H)
1

Checksum2(5) Negative Acknowledgement
HeaderError
Address
(15H)
code
1
1
1

Delimiter(03H)
1

Checksum2

Header:Delimiter(03H)
1

Control code to represent the beginning of the command or the response.
ASCII codes are used.
Setting command, Reading command: STX (02H) fixed
Response with data, Acknowledgement: ACK (06H) fixed
Negative acknowledgement:
NAK (15H) fixed
Instrument number (Address): Numbers by which the master discerns each slave.
Instrument numbers 0 to 94 and Global address 95.
ASCII codes (20H to 7FH) are used by adding 20H to instrument numbers 0 to 95(00H to 5FH).
95 (7FH) is called the Global address, which is used when the same command is sent
to all the slaves connected. However, a response is not returned.
Sub address:
20H fixed
Command type: Code to discern Setting command (50H) and Reading command (20H)

5

Data item:

Data:

Checksum:
Delimiter:
Error code:

Classification of the command object.
Composed of 4-digit hexadecimal numbers, using ASCII.
Refer to “7. Communication command table”. (pp.11 to 21)
The contents of data (set value) differ depending on the setting command.
Composed of 4-digit hexadecimal numbers, using ASCII.
Refer to “7. Communication command table”. (pp.11 to 21)
2-character data to detect communication errors. (Refer to “5.3 Checksum Calculation”.)
Control code to represent the end of command.
ASCII code ETX (03H) fixed
Represents an error type using ASCII.
1 (31H)-----Non-existent command
2 (32H)-----Not used
3 (33H)-----Setting outside the setting range
4 (34H)-----Status unable to be set (e.g. During Conductivity Calibration or Temperature
Calibration mode)
5 (35H)-----During setting mode by keypad operation

5.3 Checksum Calculation
Checksum is used to detect receiving errors in the command or data.
Set the program for the master side as well to calculate the checksum of the response data from theslaves so that communication errors can be checked.
The ASCII code (hexadecimal) corresponding to the characters which range from the address(instrument number) to that before the checksum is converted to binary notation, and the total value iscalculated.
The lower one byte of the total value is converted to 2’s complement, and then to hexadecimal numbers,that is, ASCII code for the checksum.
• 1’s complement: Reverse each binary bit. 0 will become 1 and vice versa.
• 2’s complement: Add 1 to 1’s complement.
Checksum Calculation Example
Data item 0008H (EVT1 ON delay time): 100 seconds (0064H)
Address (instrument number): 0 (20H)[e.g.]
Checksum calculation range
STX

P

0

0

0

8

0

0

6

4

D

E

ETX

[Characters above are represented in ASCII.]
02H 20H 20H 50H 30H 30H 30H 38H 30H 30H 36H 34H 44H 45H 03H[Binary][Hexadecimal]
20H
0010 0000
20H
0010 0000
50H
0101 0000
30H
0011 0000
30H
0011 0000
30H
0011 0000
38H
0011 1000
30H
0011 0000
30H
0011 0000
36H
0011 0110
0011 0100+ 34H
10 0010 0010

Checksum1101[2’s complement]

1101

1101
1
1110

[Hexadecimal]

D

E[ASCII code]

44H

45H

[1’s complement]+

Checksum(Fig. 5.3-1)
6

6. MODBUS Protocol
6.1 Transmission Mode
There are 2 transmission modes (ASCII and RTU) in MODBUS protocol.
ASCII Mode
Hexadecimal (0 to 9, A to F), which is divided into high order (4-bit) and low order (4-bit) out of
8-bit binary data in command is transmitted as ASCII characters.
Data format
Start bit: 1 bit
Data bit: 7 bits (8 bits) (Selectable)
Parity: Even (No parity, Odd) (Selectable)
Stop bit: 1 bit (2 bits) (Selectable)
Error detection: LRC (Longitudinal Redundancy Check)
RTU Mode
8-bit binary data in command is transmitted as it is.
Data format
Start bit: 1 bit
Data bit: 8 bits
Parity: No parity (Even, Odd) (Selectable)
Stop bit: 1 bit (2 bits) (Selectable)
Error detection: CRC-16 (Cyclic Redundancy Check)6.2 Data Communication Interval
ASCII Mode
Max.1 second of interval between characters
RTU Mode
Communication speed 9600 bps, 19200 bps:
To transmit continuously, an interval between characters which consist of one message, must bewithin 1.5-character transmission times.
Communication speed 38400 bps:
To transmit continuously, an interval between characters which consist of one message, must bewithin 750 s.
If an interval lasts longer than 1.5-character transmission times or 750 s, the AER-102-ECH assumes
that transmission from the master is finished, which results in a communication error, and will not
return a response.
6.3 Message Configuration
ASCII Mode
ASCII mode message is configured to start by Header [: (colon) (3AH)] and end by Delimiter [CR(carriage return) (0DH) + LF (Line feed) (0AH)].
Header(:)

Slaveaddress

Function
code

Error check
LRC

Data

Delimiter(CR)

Delimiter(LF)

RTU Mode
Communication speed 9600 bps, 19200 bps: RTU mode is configured to start after idle time isprocessed for more than 3.5-character transmissions, and end after idle time is processed formore than 3.5-character transmissions.
Communication speed 38400 bps: RTU mode is configured to start after idle time is processed formore than 1.75 ms, and end after idle time is processed for more than 1.75 ms.
3.5 idle
3.5 idle
Slave
FunctionError check
Data
CRC-16characterscharacters addresscode
6.3.1 Slave Address
Slave address is an individual instrument number on the slave side, and is set within the range 0 to 95(00H to 5FH).
The master identifies slaves by the slave address of the requested message.
The slave informs the master which slave is responding to the master by placing its own address in the
response message.
Slave address 00H (Broadcast address) can identify all the slaves connected. However, slaves do notrespond.
7

6.3.2 Function CodeThe function code is the command code for the slave to undertake one of the following actions.
(Table 6.3.2-1)
Function CodeContents
03 (03H)
Reading the set value and information from slaves
06 (06H)
Setting to slaves
The Function code is used to discern whether the response is normal (acknowledgement) or if any error(negative acknowledgement) has occurred when the slave returns the response message to the master.
When acknowledgement is returned, the slave simply returns the original function code.
When negative acknowledgement is returned, the MSB of the original function code is set as 1 for the
response.
(For example, if the master sends request message setting 10H to the function code by mistake, slave
returns 90H by setting the MSB to 1, because the former is an illegal function.)
For negative acknowledgement, the exception codes below are set to the data of the response message,
and returned to the master in order to inform it of what kind of error has occurred. (Table 6.3.2-2)(Table 6.3.2-2)
Exception CodeContents
1 (01H)
Illegal function (Non-existent function)
2 (02H)
Illegal data address (Non-existent data address)
3 (03H)
Illegal data value (Value out of the setting range)
Shinko protocol error code 4 (Status unable to be set)
17 (11H)(e.g.) During Conductivity or Temperature calibration mode
18 (12H)
Shinko protocol error code 5 (During setting mode by keypad operation)
6.3.3 Data
Data differs depending on the function code.
A request message from the master is composed of a data item, amount of data and setting data.
A response message from the slave is composed of the byte count, data and exception codesin negative acknowledgements.
The effective range of data is -32768 to 32767 (8000H to 7FFFH).
6.3.4 Error CheckASCII Mode
After calculating LRC (Longitudinal Redundancy Check) from the slave address to the end of data,
the calculated 8-bit data is converted to two ASCII characters, and are appended to the end of message.
How to calculate LRC
1 Create a message in RTU mode.
2 Add all the values from the slave address to the end of data. This is assumed as X.
3 Make a complement for X (bit reverse). This is assumed as X.
4 Add a value of 1 to X. This is assumed as X.
5 Set X as an LRC to the end of the message.
6 Convert the whole message to ASCII characters.
RTU Mode
After calculating CRC-16 (Cyclic Redundancy Check) from the slave address to the end of the data, thecalculated 16-bit data is appended to the end of message in sequence from low order to high order.
How to calculate CRC-16
In the CRC-16 system, the information is divided by the polynomial series. The remainder is added to theend of the information and transmitted. The generation of a polynomial series is as follows.
(Generation of polynomial series: X16 + X 15 + X 2 + 1)
1 Initialize the CRC-16 data (assumed as X) (FFFFH).
2 Calculate exclusive OR (XOR) with the 1st data and X. This is assumed as X.
3 Shift X one bit to the right. This is assumed as X.
4 When a carry is generated as a result of the shift, XOR is calculated by X of 3 and the fixedvalue (A001H). This is assumed as X. If a carry is not generated, go to step 5 .
5 Repeat steps 3 and 4 until shifting 8 times.
8

6
7

8
9

XOR is calculated with the next data and X. This is assumed as X.
Repeat steps 3 to 5 .
Repeat steps 3 to 5 up to the final data.
Set X as CRC-16 to the end of message in sequence from low order to high order.

6.4 Message Example
ASCII Mode
Numerals written below the command represent the number of characters.
1

Reading [Slave address 1, Data item 0080H (Conductivity)]• A request message from the masterAmount of data means how many data items are to be read. It is fixed as (30H 30H 30H 31H).
Header Slave
Function
Data item
Amount of data
Error check Delimiter
addresscode[0080H][0001H]
LRC(3AH) (30H 31H) (30H 33H) (30H 30H 38H 30H) (30H 30H 30H 31H) (37H 42H) (0DH 0AH)
1
2
2
4
4
2
2
• Response message from the slave in normal status [(e.g.) 1.00 mS/cm (0064H)]
The response byte count means the byte count of data which have been read. It is fixedas (30H 32H).
Response
Error check Delimiter
Data
Header Slave
Functionbyte countLRC
address[0064H]
code[02H](30H 30H 36H 34H) (39H 36H) (0DH 0AH)
(3AH) (30H 31H) (30H 33H)
(30H 32H)
1
2
2
2
4
2
2
• Response message from the slave in exception (error) status (When a data item is incorrect)
The function code MSB is set to 1 for the response message in exception (error) status (83H isreturned).
The exception code 02H (Non-existent data address) is returned (error).
Header Slave
Function Exception code Error check Delimiter
address
code
[02H]
LRC
(3AH) (30H 31H) (38H 33H) (30H 32H)
(37H 41H) (0DH 0AH)
1
2
2
2
2
2
Setting [Slave address 1, Data item 0008H (EVT1 ON delay time)]• A request message from the master [When EVT1 ON delay time is set to 100 seconds (0064H)]
Header Slave
Function
Data item
Data
Error check Delimiter
addresscode[0008H][0064H]
LRC(3AH) (30H 31H) (30H 36H) (30H 30H 30H 38H) (30H 30H 36H 34H) (38H 44H) (0DH 0AH)
1
2
2
4
4
2
2

2

• Response message from the slave in normal status
Header Slave
Function
Data item
Data
Error check Delimiter
addresscode[0008H][0064H]
LRC(3AH) (30H 31H) (30H 36H) (30H 30H 30H 38H) (30H 30H 36H 34H) (38H 44H) (0DH 0AH)
1
2
2
4
4
2
2
• Response message from the slave in exception (error) status (When a value out of the setting range
is set.)
The function code MSB is set to 1 for the response message in exception (error) status (86H isreturned.).
The exception code 03H (Value out of the setting range) is returned (error).
Header Slave
Function Exception code Error check
Delimiter
address
code
[03H]
LRC
(3AH) (30H 31H) (38H 36H) (30H 33H)
(37H 36H)(0DH 0AH)
1
2
2
2
2
2

9

RTU Mode
Numerals written below the command represent number of characters.
Reading [Slave address 1, Data item 0080H (Conductivity)]• A request message from the masterAmount of data means how many data items are to be read. It is fixed as (0001H).
Slave
Function
Data item
Amount of data
Error check3.5 idle
addresscode
CRC-16characters
(01H)
(03H)
(0080H)(0001H)(85E2H)
1
1
2
2
2

1

3.5 idle
characters• Response message from the slave in normal status [(e.g.) 1.00 mS/cm (0064H)]
The response byte count means the byte count of data which has been read. It is fixedas (02H).
Slave
Function
Response
Data
Error check3.5 idle
3.5 idle
addresscodebyte countCRC-16characterscharacters
(01H)
(03H)
(02H)
(0064H)(B9AFH)1
1
1
2
2• Response message from the slave in exception (error) status (When a data item is incorrect)
The function code MSB is set to 1 for the response message in exception (error) status (83H isreturned).
The exception code (02H: Non-existent data address) is returned (error).
Slave
Function Exception code
Error check3.5 idle
3.5 idle
addresscode
CRC-16characterscharacters
(01H)
(83H)
(02H)
(C0F1H)1
1
1
2
Setting [Slave address 1, Data item 0008H (EVT1 ON delay time)]• A request message from the master [When EVT1 ON delay time is set to 100 sec (0064H)]
Slave
Function
Data item
Data
Error check3.5 idle
3.5 idle
addresscode
CRC-16characterscharacters
(01H)
(06H)
(0008H)(0064H)(D9E3H)
1
1
2
2
2

2

• Response message from the slave in normal status
Slave
Function
Data item
3.5 idle
addresscodecharacters
(01H)
(06H)
(0008H)
1
1
2

Data(0064H)
2

Error check
CRC-16(D9E3H)2

3.5 idle
characters• Response message from the slave in exception (error) status (When a value out of the setting range is set)
The function code MSB is set to 1 for the response message in exception (error) status (86H isreturned.).
The exception code (03H: Value out of the setting range) is returned (error).
Slave
Function Exception code
Error check3.5 idle
3.5 idle
addresscode
CRC-16characterscharacters
(01H)
(86H)
(03H)
(0261H)
1
1
1
2

10

7. Communication Command Table
7.1 Note on Setting/Reading Commands• The data (set value, decimal) is converted to hexadecimal numbers.
A negative number is represented in 2's complement.
• When connecting multiple slaves, the address (instrument number) must not be duplicated.
• Data items 0200H to 0209H (User save area 1 to 10) can be read or set in 1 word units.
Effective range of data is -32768 to 32767 (8000H to 7FFFH).
• MODBUS protocol uses Holding Register addresses. The Holding Register addresses are created asfollows. A Shinko command data item is converted to decimal number, and the offset of 40001 is added.
The result is the Holding Register address.
Using Data item 0001H (Sensor cell constant) as an example: Data item in the sending message is 0001H,
however, MODBUS protocol Holding Register address is 40002 (1 + 40001).
• Even if options are not ordered, setting or reading via software communication will be possible.
However, EVT3, EVT4 and Transmission output 2 command contents will not function.
(1) Setting Command• Up to 1,000,000 (one million) entries can be stored in non-volatile IC memory.
If the number of settings exceeds the limit, the data will not be saved. So, do not change the set values
frequently via communication. (If the value set via communication is the same as the value before thesetting, the value will not be written in non-volatile IC memory.)• Be sure to select Lock 3 when changing the set value frequently via software communication. If Lock 3 isselected, all set values – except Sensor cell constant, Measurement unit, Measurement range,
Conductivity Zero and Span adjustment values, Temperature calibration value, Transmission output 1
Zero and Span adjustment values, Transmission output 2 Zero and Span adjustment values – can be
temporarily changed. However, they revert to their previous value after the power is turned off because
they are not saved in the non-volatile IC memory.
Do not change setting items (EVT1, EVT2, EVT3, EVT4 types). If they are changed, they will affect othersetting items.
• Setting range of each item is the same as that of keypad operation.
• When the data (set value) has a decimal point, a whole number (hexadecimal) without a decimal point is used.
• If EVT type is changed during selection of Data items 0005H (EVT1 type), 0050H (EVT2 type), 0051H(EVT3 type) and 0052H (EVT4 type), EVT1 to EVT4 values default to 0 (zero). Output status of EVT1 to
EVT4 will also be initialized.
• Settings via software communication are possible while in Set value lock status.
• Communication parameters such as Instrument Number, Communication Speed of the slave cannot be set
by software communication. They can only be set via the keypad.
• When sending a command using Global address [95 (7FH), Shinko protocol] or Broadcast address[(00H), MODBUS protocol], the same command is sent to all the slaves connected. However, a response
is not returned.
(2) Reading Command• When the data (set value) has a decimal point, a whole number (hexadecimal) without a decimal point isused for a response.
7.2 Setting/Reading Command
Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0001H Sensor cell constant
50H/20H
50H/20H

06H/03H 0002H Cell constant correction value
06H/03H 0003H Measurement unit

11

Data
0000H: 1.0/cm
0001H: 10.0/cm
Set value (Decimal point ignored.)
0000H: Conductivity (mS/cm, S/cm)
0001H: Conductivity (S/m, mS/m)
0002H: Seawater salinity (%)
0003H: NaCl salinity (%)
0004H: TDS conversion (g/L, mg/L)

Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0004H Measurement range

Data
Sensor cell constant: 1.0/cm
When Conductivity (mS/cm, S/cm)
is selected in [Measurement unit]:
0000H: 0.00 to 20.00 mS/cm
0001H: 0.0 to 200.0 mS/cm
0002H: 0.0 to 500.0 mS/cm
0003H: 0 to 500 mS/cm
0004H: 0.000 to 2.000 mS/cm
0005H: 0.000 to 5.000 mS/cm
0006H: 0.00 to 50.00 mS/cm
0007H: 0 to 2000 S/cm
0008H: 0 to 5000 S/cm
When Conductivity (S/m, mS/m) is
selected in [Measurement unit]:
0000H: 0.000 to 2.000 S/m
0001H: 0.00 to 20.00 S/m
0002H: 0.00 to 50.00 S/m
0003H: 0.0 to 50.0 S/m
0004H: 0 to 2000 mS/m
0005H: 0.000 to 5.000 S/m
0006H: 0.0 to 200.0 mS/m
0007H: 0.0 to 500.0 mS/m
When Seawater salinity (%) is selectedin [Measurement unit]:
0000H: 0.00 to 4.00 %When NaCl salinity (%) is selected in[Measurement unit]:
0000H: 0.00 to 20.00 %When TDS conversion (g/L, mg/L) is
selected in [Measurement unit]:
0000H: 0.0 to 20.0 g/L
0001H: 0 to 200 g/L
0002H: 0 to 500 g/L
0003H: 0 to 2000 mg/L
0004H: 0 to 5000 mg/L
Sensor cell constant: 10.0/cm
When Conductivity (mS/cm, S/cm)
is selected in [Measurement unit]:
0000H: 0.0 to 200.0 mS/cm
0001H: 0.0 to 500.0 mS/cm
0002H: 0 to 2000 mS/cm
When Conductivity (S/m, mS/m) is
selected in [Measurement unit]:
0000H: 0.00 to 20.00 S/m
0001H: 0.00 to 50.00 S/m
0002H: 0.0 to 200.0 S/m
When Seawater salinity (%) is selectedin [Measurement unit]:
0000H: 0.00 to 4.00 %When NaCl salinity (%) is selected in[Measurement unit]:
0000H: 0.00 to 20.00 %When TDS conversion (g/L) is selectedin [Measurement unit]:
0000H: 0 to 200 g/L
0001H: 0 to 500 g/L
0002H: 0 to 2000 g/L

12

Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0005H EVT1 type

Data
0000H: No action
0001H: Conductivity input low limit action
0002H: Conductivity input high limit action
0003H: Temperature input low limit action
0004H: Temperature input high limit action

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H
06H/03H
06H/03H

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H

50H/20H
50H/20H
50H/20H

06H/03H 0021H Temperature coefficient
06H/03H 0022H Reference temperature
06H/03H 0023H Temperature input decimal
point place
06H/03H 0029H Temperature input filter time
constant
06H/03H 0030H Set value lock50H/20H
50H/20H

0006H
0007H
0008H
0009H
000AH

EVT1 value
EVT1 ON side
EVT1 ON delay time
EVT1 OFF delay time
Conductivity input filter time
constant
000BH TDS conversion factor
0010H EVT1 proportional band
0011H EVT1 reset
0012H EVT1 proportional cycle
0013H EVT2 proportional band
0014H EVT2 reset
0015H EVT2 proportional cycle
0016H EVT3 proportional band
0017H EVT3 reset
0018H EVT3 proportional cycle
0019H EVT4 proportional band
001AH EVT4 reset
001BH EVT4 proportional cycle
0020H Temperature compensation
method130005H: Error output
0006H: Fail output
0007H: Conductivity input error alarm
output0008H: Conductivity input High/Low
limits independent action
0009H: Temperature input High/Low
limits independent action
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
0000H: Temperature characteristics
of NaCl
0001H: Temperature coefficient (%/ )and randomly selectedreference temperature
0002H: No temperature compensation
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
0000H: No decimal point
0001H: 1 digit after decimal pointSet value (Decimal point ignored.)
0000H: Unlock
0001H: Lock 1
0002H: Lock 2
0003H: Lock 3

Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0031H Transmission output 1 type

50H/20H
50H/20H
50H/20H
50H
50H/20H
50H

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

Data
0000H: Conductivity transmission
0001H: Temperature transmission
0002H: EVT1 MV transmission (*1)
0003H: EVT2 MV transmission
0004H: EVT3 MV transmission (*2)
0005H: EVT4 MV transmission (*2)
Set value (Decimal point ignored.)

06H/03H 0032H Transmission output 1 highlimit
06H/03H 0033H Transmission output 1 low
Set value (Decimal point ignored.)limit
06H/03H 0037H Backlight time
Set value
06H
0040H Temperature calibration mode 0000H: Conductivity/Temperature
Display mode
0001H: Temperature calibration mode
06H/03H 0041H Temperature calibration value Set value (Decimal point ignored.)
06H
0042H Conductivity calibration mode 0000H: Conductivity/Temperature
Display mode
0001H: Conductivity calibration Zeroadjustment mode
0002H: Conductivity calibration Spanadjustment mode
06H/03H 0043H Conductivity Zero adjustment
Set value (Decimal point ignored.)value
06H/03H 0044H Conductivity Span adjustment
Set value (Decimal point ignored.)value
06H/03H 0045H EVT output when input errors 0000H: Enabledoccur
0001H: Disabled
06H/03H 0046H Cable length correction
Set value (Decimal point ignored.)
06H/03H 0047H Cable cross-section area
Set value (Decimal point ignored.)
06H/03H 0048H Output ON time when EVT1
Set value
output ON
06H/03H 0049H Output OFF time when EVT1 Set value
output ON
06H/03H 004AH Output ON time when EVT2
Set value
output ON
06H/03H 004BH Output OFF time when EVT2 Set value
output ON
06H/03H 004CH Output ON time when EVT3
Set value
output ON
06H/03H 004DH Output OFF time when EVT3 Set value
output ON
06H/03H 004EH Output ON time when EVT4
Set value
output ON
06H/03H 004FH Output OFF time when EVT4 Set value
output ON(*1) If ‘Setting’ is executed while Transmission output 2 (TA2 option) is ordered, the following error
code will be returned.
• Shinko protocol: Error code 3 (33H)• MODBUS: Exception code 3 (03H)(*2) If ‘Setting’ is executed while EVT3, EVT4 outputs (EVT3 option) are/is not ordered, the following error
code will be returned.
• Shinko protocol: Error code 3 (33H)• MODBUS: Exception code 3 (03H)

14

Shinko MODBUS
Command Function
Type
Code
50H/20H 06H/03H 0050H

EVT2 type

50H/20H

06H/03H 0051H

EVT3 type

50H/20H

06H/03H 0052H

EVT4 type

Data Item

Data
0000H: No action
0001H: Conductivity input low limit action
0002H: Conductivity input high limit action
0003H: Temperature input low limit action
0004H: Temperature input high limit
action0005H: Error output
0006H: Fail output
0007H: Conductivity input error alarm
output0008H: Conductivity input High/Low
limits independent action
0009H: Temperature input High/Low
limits independent action
0000H: No action
0001H: Conductivity input low limit action
0002H: Conductivity input high limit action
0003H: Temperature input low limit action
0004H: Temperature input high limit
action0005H: Error output
0006H: Fail output
0007H: Conductivity input error alarm
output0008H: Conductivity input High/Low
limits independent action
0009H: Temperature input High/Low
limits independent action
0000H: No action
0001H: Conductivity input low limit action
0002H: Conductivity input high limit action
0003H: Temperature input low limit action
0004H: Temperature input high limit action

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H

0053H
0054H
0055H
0056H
0057H
0058H
0059H
005AH
005BH
005CH
005DH
005EH

EVT2 value
EVT3 value
EVT4 value
EVT2 ON side
EVT3 ON side
EVT4 ON side
EVT2 ON delay time
EVT3 ON delay time
EVT4 ON delay time
EVT2 OFF delay time
EVT3 OFF delay time
EVT4 OFF delay time

150005H: Error output
0006H: Fail output
0007H: Conductivity input error alarm
output0008H: Conductivity input High/Low
limits independent action
0009H: Temperature input High/Low
limits independent action
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
Set value
Set value
Set value
Set valueShinko MODBUS
Command Function
Type
Code
50H/20H 06H/03H 0063H

Backlight selection

50H/20H

06H/03H 0064H

Conductivity color

50H/20H
50H/20H

06H/03H 0065H
06H/03H 0066H

Conductivity color range
Bar graph indication

50H/20H

06H/03H 0067H

50H/20H

06H/03H 0068H

50H/20H

06H/03H 0069H

Conductivity color reference
value
Conductivity input sensor
correction
Temperature Display whenno temperature compensation

50H/20H

06H/03H 006FH

Pt100 input wire type

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H

06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H

50H/20H

06H/03H 0100H

EVT1 output high limit
EVT1 output low limit
EVT2 output high limit
EVT2 output low limit
EVT3 output high limit
EVT3 output low limit
EVT4 output high limit
EVT4 output low limit
Key operation change flagclearing
EVT1 hysteresis type

50H/20H

06H/03H 0101H

EVT2 hysteresis type

50H/20H

06H/03H 0102H

EVT3 hysteresis type

50H/20H

06H/03H 0103H

EVT4 hysteresis type

50H/20H
50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H
06H/03H

EVT1 OFF side
EVT2 OFF side
EVT3 OFF side
EVT4 OFF side

0070H
0071H
0072H
0073H
0074H
0075H
0076H
0077H
007FH

0104H
0105H
0106H
0107H

Data Item

Data
0000H: All are backlit.
0001H: Conductivity Display
0002H: Temperature Display
0003H: Action indicators
0004H: Conductivity Display +Temperature Display
0005H: Conductivity Display +Action indicators
0006H: Temperature Display +Action indicators
0000H: Green
0001H: Red
0002H: Orange
0003H: Conductivity color changes
continuously.
Set value (Decimal point ignored.)
0000H: No indication
0001H: Transmission output 1
0002H: Transmission output 2 (*)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
0000H: Unlit
0001H: Reference temperature
0002H: Measured value
0000H: 2-wire type
0001H: 3-wire typeSet value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
0001H: Clear change flag.
0000H: Medium Value
0001H: Reference Value
0000H: Medium Value
0001H: Reference Value
0000H: Medium Value
0001H: Reference Value
0000H: Medium Value
0001H: Reference Value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)(*) If ‘Setting’ is executed while Transmission output 2 (TA2 option) is not ordered, the following error
code will be returned.
• Shinko protocol: Error code 3 (33H)• MODBUS: Exception code 3 (03H)

16

Shinko MODBUS
Command Function
Type
Code
50H/20H 06H/03H 010FH

50H/20H

06H/03H 0110H

50H/20H

06H/03H 0111H

50H/20H

06H/03H 0112H

50H/20H

06H/03H 0113H

50H/20H

06H/03H 0114H

50H/20H

06H/03H 0115H

50H/20H

06H/03H 0116H

50H/20H

06H/03H 0117H

50H/20H

06H/03H 0118H

50H/20H

06H/03H 0119H

50H/20H

06H/03H 011AH

50H/20H

06H/03H 011BH

50H/20H

06H/03H 011CH

Data Item

Data

Transmission output 1 statuswhen calibrating

0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value
Transmission output 1 value HOLD Set value (Decimal point
when calibrating
ignored.)
EVT1 conductivity input error alarm 0000H: No action
0001H: EVT2 type
EVT type
0002H: EVT3 type (*1)
0003H: EVT4 type (*1)
EVT2 conductivity input error alarm 0000H: EVT1 type (*2)
0001H: No action
EVT type
0002H: EVT3 type (*1)
0003H: EVT4 type (*1)
EVT3 conductivity input error alarm 0000H: EVT1 type (*2)
0001H: EVT2 type
EVT type
0002H: No action
0003H: EVT4 type
EVT4 conductivity input error alarm 0000H: EVT1 type (*2)
0001H: EVT2 type
EVT type
0002H: EVT3 type
0003H: No action
EVT1 conductivity input error alarm Set value (Decimal pointband when EVT output ON
ignored.)
EVT1 conductivity input error alarm Set value
time when EVT output ON
EVT1 conductivity input error alarm Set value (Decimal point
ignored.)band when EVT output OFF
EVT1 conductivity input error alarm Set value
time when EVT output OFF
EVT2 conductivity input error alarm Set value (Decimal pointband when EVT output ON
ignored.)
EVT2 conductivity input error alarm Set value
time when EVT output ON
EVT2 conductivity input error alarm Set value (Decimal point
ignored.)band when EVT output OFF
EVT2 conductivity input error alarm Set value
time when EVT output OFF(*1) If ‘Setting’ is executed while EVT3, EVT4 outputs (EVT3 option) are/is not ordered, the following error
code will be returned.
• Shinko protocol: Error code 3 (33H)• MODBUS: Exception code 3 (03H)(*2) If ‘Setting’ is executed while Transmission output 2 (TA2 option) is ordered, the following error
code will be returned.
• Shinko protocol: Error code 3 (33H)• MODBUS: Exception code 3 (03H)

17

Shinko MODBUS
Command Function
Type
Code
50H/20H 06H/03H 011DH

Data Item
EVT3 conductivity input error alarmband when EVT output ON
EVT3 conductivity input error alarmtime when EVT output ON
EVT3 conductivity input error alarmband when EVT output OFF
EVT3 conductivity input error alarmtime when EVT output OFF
EVT4 conductivity input error alarmband when EVT output ON
EVT4 conductivity input error alarmtime when EVT output ON
EVT4 conductivity input error alarmband when EVT output OFF
EVT4 conductivity input error alarmtime when EVT output OFF
Conductivity input error alarm time
unit
Transmission output 1 adjustment
mode

50H/20H

06H/03H 011EH

50H/20H

06H/03H 011FH

50H/20H

06H/03H 0120H

50H/20H

06H/03H 0121H

50H/20H

06H/03H 0122H

50H/20H

06H/03H 0123H

50H/20H

06H/03H 0124H

50H/20H

06H/03H 0125H

50H/20H

06H/03H

0126H

50H/20H

06H/03H

0127H

50H/20H

06H/03H

0128H

50H/20H

06H/03H

0129H

Transmission output 1 Zeroadjustment value
Transmission output 1 Spanadjustment value
EVT1 cycle variable range

50H/20H

06H/03H

012AH

EVT2 cycle variable range

50H/20H

06H/03H

012BH

EVT3 cycle variable range

50H/20H

06H/03H

012CH

EVT4 cycle variable range

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H
06H/03H
06H/03H

012DH
012EH
012FH
0130H
0131H

50H/20H

06H/03H

0139H

50H/20H

06H/03H

013AH

50H/20H

06H/03H

013BH

50H/20H

06H/03H

013CH

50H/20H

06H/03H

013DH

50H/20H

06H/03H

013EH

50H/20H

06H/03H

013FH

50H/20H

06H/03H

0140H

EVT1 cycle extended time
EVT2 cycle extended time
EVT3 cycle extended time
EVT4 cycle extended time
3-electrode Conductivity Sensor
resistance
EVT1 High/Low limits
independent lower side value
EVT2 High/Low limits
independent lower side value
EVT3 High/Low limits
independent lower side value
EVT4 High/Low limits
independent lower side value
EVT1 High/Low limits
independent upper side value
EVT2 High/Low limits
independent upper side value
EVT3 High/Low limits
independent upper side value
EVT4 High/Low limits
independent upper side value
18

Data
Set value (Decimal point
ignored.)Set value
Set value (Decimal point
ignored.)Set value
Set value (Decimal point
ignored.)Set value
Set value (Decimal point
ignored.)Set value
0000H: Second(s)0001H: Minute(s)0000H: Conductivity/
Temperature Display Mode,
0001H: Transmission output 1
Zero adjustment mode
0002H: Transmission output 1
Span adjustment modeSet value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value
Set value
Set value
Set value
Set value
Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Set value (Decimal point
ignored.)Shinko MODBUS
Command Function
Type
Code
50H/20H 06H/03H
50H/20H 06H/03H
50H/20H 06H/03H
50H/20H 06H/03H
50H/20H 06H/03H

Data Item
0141H EVT1 hysteresis
0142H EVT2 hysteresis
0143H EVT3 hysteresis
0144H EVT4 hysteresis
0147H Transmission output 2 type

50H/20H
50H/20H
50H/20H

06H/03H 0148H Transmission output 2 high limit
06H/03H 0149H Transmission output 2 low limit
06H/03H 014AH Transmission output 2 adjustmentmode (*2)

50H/20H

06H/03H 014BH Transmission output 2 Zeroadjustment value
06H/03H 014CH Transmission output 2 Spanadjustment value
06H/03H 014DH Transmission output 2 statuswhen calibrating

50H/20H
50H/20H

50H/20H

06H/03H 014EH

50H/20H

06H/03H

0151H

50H/20H

06H/03H

0152H

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H

0200H
0201H
0202H
0203H
0204H
0205H
0206H
0207H
0208H
0209H

Data
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
0000H: Conductivity transmission
0001H: Temperature transmission
0002H: MV2 transmission
0003H: MV3 transmission (*1)
0004H: MV4 transmission (*1)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
0000H: Conductivity/Temperature
Display Mode
0001H: Transmission output 2 Zeroadjustment mode
0002H: Transmission output 2 Spanadjustment modeSet value (Decimal point ignored.)
Set value (Decimal point ignored.)

0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value
Transmission output 2 value HOLD Set value (Decimal point ignored.)when calibrating
Set value
Conductivity inputs for moving
average
Set value
Temperature inputs for moving
average
User save area 1-32768 to 32767 (8000H to 7FFFH)
User save area 2-32768 to 32767 (8000H to 7FFFH)
User save area 3-32768 to 32767 (8000H to 7FFFH)
User save area 4-32768 to 32767 (8000H to 7FFFH)
User save area 5-32768 to 32767 (8000H to 7FFFH)
User save area 6-32768 to 32767 (8000H to 7FFFH)
User save area 7-32768 to 32767 (8000H to 7FFFH)
User save area 8-32768 to 32767 (8000H to 7FFFH)
User save area 9-32768 to 32767 (8000H to 7FFFH)
User save area 10-32768 to 32767 (8000H to 7FFFH)(*1) If ‘Setting’ is executed while EVT3, EVT4 outputs (EVT3 option) are/is not ordered, the following error
code will be returned.
• Shinko protocol: Error code 3 (33H)• MODBUS: Exception code 3 (03H)(*2) If ‘Setting’ is executed while Transmission output 2 (TA2 option) is not ordered, the following error
code will be returned.
• Shinko protocol: Error code 4 (34H)• MODBUS: Exception code 17 (11H)

19

7.3 Read Only Command
Shinko MODBUS
Command Function
Data Item
Data
Type
Code
20H
03H
0080H Conductivity
Conductivity (Decimal point ignored.)
20H
03H
0081H Status flag 10000 0000 0000 0000
to
20
215
0 digit: Not used (Always 0)
2
21 digit: Not used (Always 0)
22 digit: Not used (Always 0)
23 digit: Not used (Always 0)
24 digit: Not used (Always 0)
25 digit: Temperature sensor burnout
0: Normal 1: Burnout
26 digit: Temperature sensor short-circuited 0: Normal 1: Short-circuited
27 digit: Outside temperature compensation range: Exceeding 110.0
0: Normal
1: Exceeding 110.0
28 digit: Outside temperature compensation range: Less than 0.0
0: Normal
1: Less than 0.0
29 digit: Conductivity measured value, salinity or TDS conversion is
outside the measurement range (high limit)
0: Normal
1: Outside high limit
210 digit: Conductivity measured value, salinity or TDS conversion is
outside the measurement range (low limit)
0: Normal
1: Outside low limit
0: Conductivity/Temperature Display mode
211 digit: Unit status flag
1: Setting mode
212, 213 digits: Conductivity calibration status flag
213 212
Status00 Conductivity/Temperature Display mode0
1 During Conductivity calibration Zeroadjustment mode
10 During Conductivity calibration Spanadjustment mode

20H
20H
20H
20H

03H
03H
03H
03H

0084H
0085H
0086H
0087H

214 digit: Not used (Always 0)
215 digit: Change in key operation
EVT1 Manipulated Variable
EVT2 Manipulated Variable
EVT3 Manipulated Variable
EVT4 Manipulated Variable

20

0: No
1: YesMV (Decimal point ignored.)MV (Decimal point ignored.)MV (Decimal point ignored.)MV (Decimal point ignored.)Shinko MODBUS
Command Function
Data Item
Data
Type
Code
20H
03H
0090H Temperature
Temperature (Decimal point ignored.)
20H
03H
0091H Status flag 20000 0000 0000 0000
to
20
215
0: OFF
1: ON
20 digit: EVT1 output
21 digit: EVT2 output
0: OFF
1: ON
0: OFF
1: ON
22 digit: EVT3 output
0: OFF
1: ON
23 digit: EVT4 output
24 to 25 digits: Transmission output 1 adjustment status flag
25
24
Status00 Conductivity/Temperature Display Mode01 During Transmission output 1 Zero adjustment
in Transmission output 1 adjustment mode
10 During Transmission output 1 Span adjustment
in Transmission output 1 adjustment mode
26 to 27 digits: Transmission output 2 adjustment status flag
27
26
Status00Conductivity/Temperature Display Mode01
During Transmission output 2 Zero adjustment
in Transmission output 2 adjustment mode
10
During Transmission output 2 Span adjustment
in Transmission output 2 adjustment mode
28 to 211 digits: Not used (Always 0)212, 213 digits: Temperature calibration status flag
213 212
Status00Conductivity/Temperature Display Mode01
During Temperature calibration
214, 215 digits: Not used (Always 0)

21

7.4 Conductivity and Temperature Calibrations, Transmission Output 1 and 2 Adjustments via
Communication Command
7.4.1 Conductivity Calibration
Cell constant may vary due to deterioration of the 4-electrode Conductivity Sensor.
To correct the varied cell constant, calibration must be performed.
Calibrate Conductivity Zero adjustment first, followed by Conductivity Span adjustment.
The following outlines the procedure for conductivity calibration.
(1) Conductivity Zero Adjustment
1 When selecting Last value HOLD (0000H) at Data item 010FH (Transmission output 1 statuswhen calibrating), or at Data item 014DH (Transmission output 2 status when calibrating),
select it while the 4-electrode Conductivity Sensor is being immersed in the solution currently
calibrated.
2 At this stage, do not immerse the 4-electrode Conductivity Sensor in the standard solution.
3 Set Data item 0042H (Conductivity calibration mode) to 0001H.
The unit moves to Conductivity calibration Zero adjustment mode.
4 Set the Conductivity Zero adjustment value at Data item 0043H (Conductivity Zero adjustment
value) so that conductivity becomes 0 (zero).
When conductivity is 0 (zero), it is not necessary to adjust.
5 If 213, 212 digits are read at Data item 0081H (Status flag 1), 01 (During Conductivity calibration
Zero adjustment mode) will be returned.
6 Set Data item 0042H (Conductivity calibration mode) to 0000H.
The Conductivity Zero adjustment is complete, and the unit will revert to Conductivity/Temperature
Display mode.
(2) Conductivity Span Adjustment
1 Immerse the 4-electrode Conductivity Sensor in the standard solution.
2 Set Data item 0042H (Conductivity calibration mode) to 0002H.
The unit moves to Conductivity calibration Span adjustment mode.
3 Set the Conductivity Span adjustment value at Data item 0044H (Conductivity Span adjustment
value), while checking the conductivity.
4 If 213, 212 digits are read at Data item 0081H (Status flag 1), 10 (During Conductivity calibration
Span adjustment mode) will be returned.
5 Set Data item 0042H (Conductivity calibration mode) to 0000H.
The Conductivity Span adjustment is complete, and the unit will revert to Conductivity/Temperature
Display mode.
If Conductivity calibration cannot be performed while in Conductivity calibration mode due totemperature compensation error, Conductivity measured value error, etc., Error code 1 (Burnout,
Short-circuited, etc.) will be returned after 25 to 210 digits are read at Data item 0081H (Status flag 1).
To cancel the error code, set Data item 0042H (Conductivity calibration mode) to 0000H.
The unit will revert to Conductivity/Temperature Display mode.
If Conductivity Zero/Span adjustment value is set at Data item 0043H (Conductivity Zero adjustment
value) or 0044H (Conductivity Span adjustment value) in Conductivity/Temperature Display mode, thefollowing error code will be returned.
Shinko protocol: Error code 34H
MODBUS protocol: Exception code 11H

22

7.4.2 Temperature Calibration
Temperature calibration is performed by setting the temperature calibration value.
The following outlines the procedure for Temperature calibration.
1

Set Data item 0040H (Temperature calibration mode) to 0001H. The unit moves to Temperature
calibration mode.
2 Set the Temperature calibration value at Data item 0041H (Temperature calibration value).
3 If 213, 212 digits are read at Data item 0091H (Status flag 2), 01 (During Temperature calibration)
will be returned.
4 Set Data item 0040H (Temperature calibration mode) to 0000H.
The Temperature calibration is complete, and the unit will revert to Conductivity/Temperature
Display mode.

If Temperature calibration cannot be performed while in Temperature calibration mode due to input
error, Calibration value error, etc., Error code 1 (Burnout, Short-circuited, etc.) will be returned after
25 to 28 digits are read at Data item 0081H (Status flag 1).
To cancel the error code, set Data item 0040H (Temperature calibration mode) to 0000H.
The unit will revert to Conductivity/Temperature Display mode.
If Temperature calibration value is set at Data item 0041H Temperature calibration value) in
Conductivity/Temperature Display mode, the following error code will be returned.
Shinko protocol: Error code 34H
MODBUS protocol: Exception code 11H
7.4.3 Transmission Output 1 Adjustment
Fine adjustment of Transmission output 1 is performed.
This instrument is adjusted at the factory, however, differences may occur between the indication valueof the connected equipment (recorders, etc.) and the output value of this instrument.
In this case, perform Transmission output 1 Zero adjustment and Span adjustment.
The following outlines the procedure for Transmission output 1 adjustment.
1

Set Data item 0126H (Transmission output 1 adjustment mode) to 0001H.
The unit moves to Transmission output 1 Zero adjustment mode.
If 25, 24 digits are read at Data item 0091H (Status flag 2), 01 (During Transmission output 1 Zeroadjustment in Transmission output 1 adjustment mode) will be returned.
2 Set the Transmission output 1 Zero adjustment value at Data item 0127H (Transmission output 1
Zero adjustment value), while viewing the value indicated on the connected equipment (recorders,etc.).
Setting range: 5.00% of Transmission output 1 span
3 Set Data item 0126H (Transmission output 1 adjustment mode) to 0002H.
The unit moves to Transmission output 1 Span adjustment mode.
If 25, 24 digits are read at Data item 0091H (Status flag 2), 10 (During Transmission output 1 Spanadjustment in Transmission output 1 adjustment mode) will be returned.
4 Set Transmission output 1 Span adjustment value at Data item 0128H (Transmission output 1 Spanadjustment value), while viewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 1 span
5 Repeat steps 1 to 4 if necessary.
6 To finish Transmission output 1 adjustment, set Data item 0126H (Transmission output 1 adjustmentmode) to 0000H.
The unit reverts to Conductivity/Temperature Display Mode.

23

7.4.4 Transmission Output 2 Adjustment
Fine adjustment of Transmission output 2 is performed.
This instrument is adjusted at the factory, however, differences may occur between the indication valueof the connected equipment (recorders, etc.) and the output value of this instrument.
In this case, perform Transmission output 2 Zero adjustment and Span adjustment.
The following outlines the procedure for Transmission output 2 adjustment.
1

Set Data item 014AH (Transmission output 2 adjustment mode) to 0001H.
The unit moves to Transmission output 2 Zero adjustment mode.
If 27, 26 digits are read at Data item 0091H (Status flag 2), 01 (During Transmission output 2 Zeroadjustment in Transmission output 2 adjustment mode) will be returned.
2 Set the Transmission output 2 Zero adjustment value at Data item 014BH (Transmission output 2
Zero adjustment value), while viewing the value indicated on the connected equipment (recorders,etc.).
Setting range: 5.00% of Transmission output 2 span
3 Set Data item 014AH (Transmission output 2 adjustment mode) to 0002H.
The unit moves to Transmission output 2 Span adjustment mode.
If 27, 26 digits are read at Data item 0091H (Status flag 2), 10 (During Transmission output 2 Spanadjustment in Transmission output 2 adjustment mode) will be returned.
4 Set Transmission output 2 Span adjustment value at Data item 014CH (Transmission output 2 Spanadjustment value), while viewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 2 span
5 Repeat steps 1 to 4 if necessary.
6 To finish Transmission output 2 adjustment, set Data item 014AH (Transmission output 2 adjustmentmode) to 0000H.
The unit reverts to Conductivity/Temperature Display Mode.

24

7.5 Notes on Programming Monitoring Software
7.5.1 How to Speed up the Scan Time
When monitoring multiple units of AER-102-ECH, set the program so that the requisite minimum pieces ofdata such as Data item 0080H (Conductivity), Data item 0090H (Temperature), Data item 0081H (Status
flag 1), Data item 0091H (Status flag 2), can be read. For other data, set the program so that they can beread only when their set value has been changed. This will speed up the scan time.
7.5.2 How to Read the Set Value Changes Made by Front Keypad Operation
If any set value is changed by keypad operation, the AER-102-ECH will set [0081H (Status flag 1) 215:
Change in key operation] to 1 (Yes).
There are 2 methods of reading the set value changes made by the front keypad.
(1) Reading method 1
1 On the monitoring software side, check that [0081H (Status flag 1) 215: Change in key operation] hasbeen set to 1 (Yes), then read all set values.
2

Clear [0081H (Status flag 1) 215: Change in key operation], by setting Data item 007FH (Key
operation change flag clearing) to 0001H (Clear change flag).
If 007FH (Key operation change flag clearing) is set to 0001H (Clear change flag) during the setting
mode of the instrument, Error code 5 (35H, Shinko protocol) or Exception Code 18 (12H, MODBUS
protocol) will be returned as a negative acknowledgement. And [0081H (Status flag 1) 215: Change in
key operation] cannot be cleared.
Set a program so that all set values can be read when a negative acknowledgement is returned.

3

Read all set values again after acknowledgement is returned.

(2) Reading method 2
1 On the monitoring software side, check that [0081H (Status flag 1) 215: Change in key operation] hasbeen set to 1 (Yes), then set 007FH (Key operation change flag clearing) to 0001H (Clear changeflag).
2

Set the program depending on the acknowledgement or negative acknowledgement as follows.
When acknowledgement is returned:
Consider it as settings completed, and read all set values.
When Error code 5 (35H, Shinko protocol) or Exception code 18 (12H, MODBUS protocol) is returned
as a negative acknowledgement:
Consider it as still in setting mode, and read the requisite minimum pieces of data such as 0080H(Conductivity), 0090H (Temperature), 0081H (Status flag 1), 0091H (Status flag 2), then return tostep 1 .

Thus, programs which do not affect the scan time can be created using the methods described above,even if set values on the monitoring software will not be updated until settings are complete.
7.5.3 Note when Sending All Set Values Simultaneously• When EVT type is changed at Data items 0005H (EVT1 type), 0050H (EVT2 type), 0051H (EVT3 type) or
0052H (EVT4 type), the EVT1, EVT2, EVT3 or EVT4 value will default to 0 (zero).
The EVT1, EVT2, EVT3 or EVT4 output status will also be initialized.
First, send the EVT1, EVT2, EVT3, EVT4 type, then send the EVT1, EVT2, EVT3, EVT4 value set at Data
items 0006H (EVT1 value), 0053H (EVT2 value), 0054H (EVT3 value) and 0055H (EVT4 value).

25

8. Specifications
Serial communication

Cable length
Communicationline
Communication
methodCommunication
speed
Synchronization
Code form
Communication
protocolData bit/Parity
Stop bit
Error correction
Error detection

The following operations can be carried out from an external computer.
(1) Reading and setting of various set values(2) Reading of the conductivity, salinity conversion, temperature and status(3) Function change, adjustment(4) Reading and setting of user save area
1.2 km (Max.), Cable resistance: Within 50
minimum on one side.)(Terminators are not necessary, but if used, use 120
EIA RS-485
Half-duplex communication
9600, 19200, 38400 bps (Selectable by keypad)
Start-stop synchronization
ASCII, Binary
Shinko protocol, MODBUS ASCII, MODBUS RTU (Selectable by keypad)
8 bits/No parity, 7 bits/No parity, 8 bits/Even, 7 bits/Even, 8 bits/Odd,
7 bits/Odd (Selectable by keypad)
1 bit, 2 bits (Selectable by keypad)
Command request repeat system
Parity check
Checksum (Shinko protocol)
LRC (MODBUS protocol ASCII)
CRC-16 (MODBUS protocol RTU)

Data format
Communication
ProtocolStart bit

Shinko Protocol

MODBUS ASCII

1

Data bit

7

ParityEven

Stop bit

1

1
7 (8)
Selectable
Even (No parity,
Odd)
Selectable
1 (2)Selectable

26

MODBUS RTU
1
8
No parity (Even,
Odd)
Selectable
1 (2)Selectable9. Troubleshooting
Check that power is being supplied to the master and slave that customers use.
If communication failure still occurs, check the following.
ProblemPossible Cause
Solution
Communication cable is not
Check the communication cableCommunication failure
securely connected, or isand connector.
disconnected/defective.
Incorrect wiring of the
Check the communication cablecommunication cable and/or
and connector.
connector
Check the communication cable
Imperfect contact between thecommunication cable and theand connector.
connector, or between thecommunication connector andinstrument port
Communication speed of the slave Check the communication speed
does not match that of the master. of the slave and master.
The data bit, parity and stop bit ofCheck the data bit, parity andthe master do not correspond tostop bit of the master and thethose of the slave.
slave.
The instrument number (address)
Check the instrument numberof the slave does not correspond(address) of the slave andto that of the command.
command.
Check the instrument numbers
The instrument numbers(addresses) of the slave.
(addresses) are duplicated in
multiple slaves.
Make sure that the program is
Check the program.
appropriate for the transmission
timing.
Although communication
A non-existent command code has Check the command code.
is occurring, the response
been sent.
is a negative acknowledge- The setting command data
Check the setting range of thement.
exceeds the setting range of theslave.
slave.
Check the slave status.
The AER-102-ECHcannot be set
during calibration mode.
Refer to Sections ‘7.4.1
Conductivity Calibration’ and ‘7.4.2
Temperature Calibration’.
(pp.22, 23)
Return the unit to Conductivity/
The AER-102-ECH is in front
Temperature Display Mode.
keypad operation setting mode.
For all other malfunctions, please contact our main office or dealers.

27

SHINKO TECHNOS CO., LTD.
OVERSEAS DIVISION
Head Office : 2-5-1, Senbahigashi, Minoo, Osaka, Japan
http://www.shinko-technos.co.jp/e/
URL:
Tel : +81-72-727-6100
overseas@shinko-technos.co.jp
E-mail:Fax: +81-72-727-7006