FEB-102-PH (C5)COMMUNICATION INSTRUCTION MANUAL

No. FEB1CPHE2 2016.03
This manual contains instructions for communication functions of the FEB-102-PH.
To prevent accidents arising from the misuse of this instrument, please ensure the operator receives thismanual.

Warning
Turn the power switch of 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
The following shows a system configuration example using the communication converter IF-400 or USB
Communication Cable CMC-001-1.
When Using the Communication Converter IF-400

Host computer

Communication converter
IF-400 (sold separately)
RS-232C

FEB-102-PH No.0

RS-485

FEB-102-PH No.1

(Fig. 1-1)

1

FEB-102-PH No.30

When Using the USB Communication Cable CMC-001-1
Host computer
USB communication cable
CMC-001-1 (sold separately)USB

FEB-102-PH No.0

RS-485

FEB-102-PH No.1

(Fig. 1-2)

2

FEB-102-PH No.30

2. Wiring
Wiring example is shown using the communication converter IF-400 or USB communication cable
CMC-001-1
When using the communication converter IF-400
Connection between the communication converter IF-400 and FEB-102-PH
By using communication cable CDM (sold separately),
Connect the cable modular jack to the IF-400 modular jack, and Y terminal 4 to FEB-102-PH 10[YA(-)].
Connect Y terminal 3 to FEB-102-PH 11 [YB(+)].
Connect Y terminals 1 and 6 to FEB-102-PH 12 [COM].
Connection between FEB-102-PH units
By using the shield wire, connect 10 [YA(-)] to 10 [YA(-)], 11 [YB(+)] to 11 [YB(+)], and12 [COM] to ⑫ [COM].
• D-sub 9-pin connector• D-sub 25-pin connector
Communication
converter
IF-400(sold separately)

Host computer

Shieldwire

Communication
converter
IF-400(sold separately)

Host computer

Shieldwire

FG

CDM (Sold separately)

CDM (Sold separately)
FEB-102-PH No. 0

FEB-102-PH No. 1

FEB-102-PH No. 30

10 11 12

10 11 12

10 11 12

Shieldwire

Shieldwire

FG

4 3 1 6

(Fig. 2-1)
3FG

When Using the USB Communication Cable CMC-001-1
Connection between the host computer and FEB-102-PH
By using the USB communication cable CMC-001-1 (sold separately),
Connect Y terminal [YA(-)] to FEB-102-PH 10 [YA(-)].
Connect Y terminal [YB(+)] to FEB-102-PH 11 [YB(+)].
Connect Y terminal [COM] to FEB-102-PH 12 [COM].
Connection between FEB-102-PH units
By using the shield wire, connect 10 [YA(-)] to 10 [YA(-)], 11 [YB(+)] to 11 [YB(+)], and12 [COM] to 12 [COM].

FEB-102-PH No. 0

FEB-102-PH No. 1

FEB-102-PH No. 30

10 11 12

10 11 12

10 11 12

Shieldwire

Shield
wire

COM
YB(+)
YA(-)

FG

FG

(Fig. 2-2)
Shield Wire
Connect only one end of the shield to the FG terminal to avoid a ground loop. If both ends of the shieldwire are connected to the FG terminal, the circuit will be closed, resulting in a ground loop. This may
cause noise. Be sure to ground the FG terminal.
Recommended cable: OTSC-VB 2PX0.5SQ (made by Onamba Co., Ltd.) or equivalent (use a twisted
pair cable.)
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 FEB-102-PH has built-in pull-up
and pull-down resistors instead of a terminator.
43. Communication Settings
Communication parameters can be set in the Communication Group.
To enter the Communication Group, follow the procedure below.
(1)

Press theMode.

key once in pH-Temperature/ORP Display Mode, or Cleansing Output(2)

Press thekey as many times as necessary until the left characters appear.

(3)

Press thekey once. The unit enters Communication Group, and “Communication

protocol” appears.
(4) Set each setting items using theCharacteror

key, and register the value with the

Setting Item, Function, Setting Range
Communication protocol• Selects communication protocol.
•: Shinko protocol: Modbus ASCII mode
: Modbus RTU modekey.

Factory Default
Shinko protocol

0
Instrument number• 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
9600 bps
Communication speed• Selects a communication speed equal to that of the host computer.
•: 9600 bps: 19200 bps: 38400 bps
Data 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(5) Press the
key once. The unit will revert to pH-Temperature/ORP Display Mode, orCleansing Output Mode.

54. Communication Procedure
Communication starts with command transmission from the host computer (hereafter Master) andends with the response of the FEB-102-PH (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 (Modbus ASCII 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.

6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 the number of characters.
(1) Setting Command
Sub
HeaderCommand
Data
Address
address
Data
Checksum(02H)
type (50H)
item
(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)

7

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.13 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.13 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. Automatic calibration is being performed using
the Automatic electrode quality evaluation function.)
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.
Checksum Calculation Example
Data item 001AH (EVT1 value): 1.00 (0064H)
Address (instrument number): 0 (20H)• 1’s complement: Reverse each binary bit. 0 will become 1 and vice versa.
• 2’s complement: Add 1 to 1’s complement.
[e.g.]
Checksum calculation range
STX

P

0

0

1

A

0

0

6

4

D

4

ETX

[Characters above are represented in ASCII.]

02H 20H 20H 50H 30H 30H31

41H 30H 30H 36H 34H 44H 34H 03H
Checksum[Binary][Hexadecimal]
20H
0010 0000
20H
0010 0000
50H
0101 0000
30H
0011 0000
30H
0011 0000
31H
0011 0001
41H
0100 0001
30H
0011 0000
30H
0011 0000
36H
0011 0110
0011 0100+ 34H
10 0010 1100

[1’s complement]

1101[2’s complement]

1101

0011
1
0100

[Hexadecimal]

D

4[ASCII code]

44H

34H

+

Checksum(Fig. 5.3-1)
8

6. Modbus Protocol
6.1 Transmission Mode
There are 2 transmission modes (ASCII and RTU) in Modbus protocol.
6.1.1 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
Parity: Even (No parity, Odd) (Selectable)
Stop bit: 1 bit (2 bits) (Selectable)
Error detection : LRC (Longitudinal Redundancy Check)
6.1.2 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
6.2.1 ASCII Mode
1 second or lessMax.1 second of interval between ASCII mode characters
6.2.2 RTU Mode
3.5 character transmission times or lessTo transmit continuously, an interval between characters which consist of one message, must
be within 3.5 character transmission times.
If an interval lasts longer than 3.5 character transmission times, FEB-102-PH assumes thattransmission from the master is finished, which results in a communication error, and will not
return a response.
6.3 Message Configuration
6.3.1 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)].
HeaderSlave
FunctionError check
Delimiter Delimiter
Data(:)
address
code
LRC
(CR)
(LF)
6.3.2 RTU Mode
RTU mode is configured to start after idle time is processed for more than 3.5 charactertransmissions, and end after idle time is processed for more than 3.5 character transmissions.
3.5 idle
Slave
FunctionError check3.5 idleDatacharacters addresscode
CRC-16characters
6.3.3 Message Details(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.

9

(2) Function CodeThe function code is the command code for the slave to undertake one of the following actions.
(Table 6.3.3-1)
Function Code03 (03H)
06 (06H)

Contents
Reading the set value and information from slaves
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 6.3.3-2)(Table 6.3.3-2)
Exception Code1 (01H)
2 (02H)
3 (03H)
17 (11H)
18 (12H)

Contents
Illegal function (Non-existent function)
Illegal data address (Non-existent data address)
Illegal data value (Value out of the setting range)
Shinko protocol error code 4 [Status unable to be set. (e.g.) Automatic calibration
is being performed using the Automatic electrode quality evaluation function.)]Shinko protocol error code 5 (During setting mode by keypad operation)(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 a number of bytes, data and exception codes innegative acknowledgements. [Refer to “7. Communication Command Table” (pp.13 to 21).]
The effective range of data is -32768 to 32767 (8000H to 7FFFH).
(4) Error Check
Error check differs depending on the ASCII Mode and RTU mode.
ASCII Mode
After calculating LRC (Longitudinal Redundancy Check) from the slave address to the endof data, the calculated 8-bit data is converted to two ASCII characters, and are appended to theend 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.

10

RTU Mode
After calculating CRC-16 (Cyclic Redundancy Check) from the slave address to the end of thedata, the calculated 16-bit data is appended to the end of message in sequence from low orderto 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 the end 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 thefixed value (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.
6 XOR is calculated with the next data and X. This is assumed as X.
7 Repeat steps 3 to 5 .
8 Repeat steps 3 to 5 up to the final data.
9 Set X as CRC-16 to the end of message in sequence from low order to high order.
6.4 Message Example
6.4.1 ASCII Mode
Numerals written below the command represent the number of characters.
1 Reading [Slave address 1, Data item 0080H (pH/ORP value)]• 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 [When pH 1.00 (0064H)]
The number of response bytes means the number of bytes of data which have been read. It is fixedas (30H 32H).
Number of
Header Slave
Function
Data
Error check Delimiter
response bytes
addresscode[0064H]
LRC[02H](3AH) (30H 31H) (30H 33H)
(30H 30H 36H 34H) (39H 36H) (0DH 0AH)
(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 001AH (EVT1 value) 1.00 (0064H)]• A request message from the master
Header Slave
Function
Data item
Data
Error check Delimiter
addresscode[001AH][0064H]
LRC(3AH) (30H 31H) (30H 36H) (30H 30H 31H 41H) (30H 30H 36H 34H) (37H 42H) (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[001AH][0064H]
LRC(3AH) (30H 31H) (30H 36H) (30H 30H 31H 41H) (30H 30H 36H 34H) (37H 42H) (0DH 0AH)
1
2
2
4
4
2
2
11

• 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 is returned.).
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
6.4.2 RTU Mode
Numerals written below the command represent the number of characters.
Reading [Slave address 1, Data item 0080H (pH/ORP value)]• 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 [When pH 1.00 (0064H)]
The number of response bytes means the number of bytes of data which has been read. It is
fixed as (02H).
Slave
Function
Number of
Data
Error check3.5 idle
3.5 idle
address
code
response bytes
CRC-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 001AH (EVT1 value) 1.00 (0064H)]• A request message from the master
Slave
Function
Data item
Data
Error check3.5 idle
addresscode
CRC-16characters
(01H)
(06H)
(001AH)(0064H)(A9E6H)
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(A9E6H)2

3.5 idle
characters

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

12

7. Communication Command Table
7.1 Note on Setting and Reading Commands• The data (set value, decimal) is converted to hexadecimal numbers.
Negative numbers are represented in 2's complement.
• When connecting multiple slaves, the address (instrument number) must not be duplicated.
• User save area 1 to 10 (0200H to 0209H) can be read or set in 1 word units.
Effective range of data is -32768 to 32767 (8000H to 7FFFH).
• Even if EVT3 or EVT4 option is not ordered, setting or reading via software communication will bepossible. However, EVT3 and EVT4 command contents will not function.
• Do not use undefined Data items. If they are used, negative acknowledgement will be returned or arandom value will be written or read, resulting in malfunction.
• 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 001AH (EVT1 value) as an example: The Data item in the sending message is 001AH,
however, the Modbus protocol Holding Register address is 40027 (26 + 40001).
(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 software communication. (If a value set via software communication is the same as thevalue before the setting, 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
is selected, all set values – except Electrode RTD, Temperature calibration value, pH calibration value,
pH calibration Auto/Manual, Adjustment value, Span sensitivity correction value, Transmission output 1
Zero adjustment value, Transmission output 1 Span adjustment value, Transmission output 2 Zeroadjustment value, Transmission output 2 Span adjustment value – 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 at Data item 0019H (EVT1 type), 0027H (EVT2 type), 0035H (EVT3 type) or
0043H (EVT4 type), then EVT1, EVT2, EVT3 or EVT4 value will default to 0 (zero). The output status of
EVT1, EVT2, EVT3 or EVT4 will also be initialized.
• Settings via software communication are possible while in Set value lock status.
• The Instrument Numbers and Communication Speed of the slave cannot be set by the softwarecommunication. They can only be set via the keypad.
• When sending a command by Global address [95 (7FH), Shinko protocol] or Broadcast address [0(00H), Modbus protocol], the same command is sent to all the slaves connected. However, theresponse is not returned.
(2) Reading Command• When the data (set value) has a decimal point, a whole number (hexadecimal) without a decimal point
is used for a response.
7.2 Setting/Reading Command
ShinkoModbusCommand Function
Type
Code
50H/20H 06H/03H 0001H
50H/20H

06H/03H

50H/20H

06H/03H

50H/20H

06H/03H

50H/20H

06H/03H

Data Item
pH 7 calibration standard(pH meter)
2nd solution(pH meter)

Data

0000H: JIS
0002H: US standard
0002H
0000H: pH 2
0001H: pH 4
0002H: pH 9
0003H: pH 10
0003H pH calibration Auto/Manual 0000H: Automatic(pH meter)
0001H: Manual
0004H pH input decimal point
0000H: No decimal point
place (pH meter)
0001H: 1 digit after decimal point
0002H: 2 digits after decimal point
0005H Moving average data amount Set value
13

Shinko Modbus
Command Function
Type
Code
50H/20H 06H/03H 0006H
50H/20H 06H/03H 0007H
50H

06H

0008H

50H

06H

0009H

50H/20H

06H/03H 000AH

50H/20H

06H/03H 000BH

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

06H/03H 000CH
06H/03H 000DH
06H/03H 000EH

50H/20H

06H/03H 000FH

50H/20H

06H/03H 0010H

50H/20H

06H/03H 0011H

50H/20H

06H/03H 0012H

50H/20H

06H/03H 0013H

50H/20H

06H/03H 0014H

50H/20H

06H/03H 0015H

50H/20H

06H/03H 0016H

50H/20H

06H/03H 0017H

50H/20H

06H/03H 0018H

50H/20H

06H/03H 0019H

Data Item

Data

Input filter time constant
pH input sensor correction(pH meter)
pH calibration mode
(pH meter)
pH calibration start(pH meter)
1st point pH calibration
value (pH meter)
2nd point pH calibration
value (pH meter)
Input high limit (ORP meter)
Input low limit (ORP meter)
Adjustment mode
(ORP meter)
Adjustment value(ORP meter)
Span sensitivity correction
mode (ORP meter)
Span sensitivity correction
value (ORP meter)
Electrode RTD (pH meter)

Reference temperature(pH meter)
Temperature input decimal
point place (pH meter)
Pt100 input wire type(pH meter)
Cable length correction(pH meter)
Cable cross-section area
(pH meter)
Temperature calibration
value (pH meter)
EVT1 type (pH meter)

EVT1 type (ORP meter)14

Set value, Decimal point ignored.
Set value, Decimal point ignored.
0000H: pH-Temperature/ORP Display
Mode, or Cleansing Output Mode
0001H: Calibration mode
0001H: 1st point calibration start
0002H: 1st point calibration complete
0003H: 2nd point calibration start
0004H: 2nd point calibration complete
Set value, Decimal point ignored.
Set value, Decimal point ignored.
Set value
Set value
0000H: pH-Temperature/ORP Display
Mode or Cleansing Output Mode
0001H: Adjustment ModeSet value
0000H: pH-Temperature/ORP Display
Mode or Cleansing Output Mode
0001H: Span sensitivity correction modeSet value
0000H: No temperature compensation
0001H: Cu500
0002H: Pt100
0003H: Pt1000
Set value, Decimal point ignored.
0000H: No decimal point
0001H: 1 digit after decimal point
0000H: 2-wire type
0001H: 3-wire typeSet value, Decimal point ignored.
Set value, Decimal point ignored.
Set value, Decimal point ignored.
0000H: No action
0001H: pH input low limit action
0002H: pH input high limit action
0003H: Temperature input low limit action
0004H: Temperature input high limit action
0005H: Error output
0006H: Fail output
0007H: Cleansing output
0008H: pH input error alarm output
0000H: No action
0001H: ORP input low limit action
0002H: ORP input high limit action
0003H: Cleansing output
0004H: ORP input error alarm output

Shinko Modbus
Command Function
Type
Code
50H/20H 06H/03H
50H/20H 06H/03H
50H/20H 06H/03H
50H/20H 06H/03H

001AH
001BH
001CH
001DH

EVT1 value
EVT1 proportional band
EVT1 reset
EVT1 hysteresis type

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

001EH
001FH
0020H
0021H
0022H
0023H
0024H
0025H

50H/20H

06H/03H 0026H

50H/20H

06H/03H 0027H

EVT1 ON side
EVT1 OFF side
EVT1 ON delay time
EVT1 OFF delay time
EVT1 proportional cycle
EVT1 output high limit
EVT1 output low limit
Output ON time when
EVT1 output ON
Output OFF time when
EVT1 output ON
EVT2 type (pH meter)

Data Item

Data

EVT2 type (ORP meter)

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

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

0028H
0029H
002AH
002BH

EVT2 value
EVT2 proportional band
EVT2 reset
EVT2 hysteresis type

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

002CH
002DH
002EH
002FH
0030H
0031H
0032H
0033H

50H/20H

06H/03H 0034H

EVT2 ON side
EVT2 OFF side
EVT2 ON delay time
EVT2 OFF delay time
EVT2 proportional cycle
EVT2 output high limit
EVT2 output low limit
Output ON time when
EVT2 output ON
Output OFF time when
EVT2 output ON

15

Set value, Decimal point ignored.
Set value, Decimal point ignored.
Set value, Decimal point ignored.
0000H: Medium value
0001H: Reference value
Set value, Decimal point ignored.
Set value, Decimal point ignored.
Set value
Set value
Set value
Set value
Set value
Set value
Set value
0000H: No action
0001H: pH input low limit action
0002H: pH input high limit action
0003H: Temperature input low limit action
0004H: Temperature input high limit action
0005H: Error output
0006H: Fail output
0007H: Cleansing output
0008H: pH input error alarm output
0000H: No action
0001H: ORP input low limit action
0002H: ORP input high limit action
0003H: Cleansing output
0004H: ORP input error alarm output
Set value, Decimal point ignored.
Set value, Decimal point ignored.
Set value, Decimal point ignored.
0000H: Medium value
0001H: Reference value
Set value, Decimal point ignored.
Set value, Decimal point ignored.
Set value
Set value
Set value
Set value
Set value
Set value
Set valueShinkoModbusCommand Function
Type
Code
50H/20H 06H/03H 0035H

Data Item

Data

EVT3 type (pH meter)

EVT3 type (ORP meter)

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

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

0036H
0037H
0038H
0039H

EVT3 value
EVT3 proportional band
EVT3 reset
EVT3 hysteresis type

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

003AH
003BH
003CH
003DH
003EH
003FH
0040H
0041H

50H/20H

06H/03H 0042H

50H/20H

06H/03H 0043H

EVT3 ON side
EVT3 OFF side
EVT3 ON delay time
EVT3 OFF delay time
EVT3 proportional cycle
EVT3 output high limit
EVT3 output low limit
Output ON time when
EVT3 output ON
Output OFF time when
EVT3 output ON
EVT4 type (pH meter)

EVT4 type (ORP meter)

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

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

0044H
0045H
0046H
0047H

50H/20H
50H/20H

06H/03H 0048H
06H/03H 0049H

EVT4 value
EVT4 proportional band
EVT4 reset
EVT4 hysteresis type
EVT4 ON side
EVT4 OFF side
160000H: No action
0001H: pH input low limit action
0002H: pH input high limit action
0003H: Temperature input low limit action
0004H: Temperature input high limit action
0005H: Error output
0006H: Fail output
0007H: Cleansing output
0008H: pH input error alarm output
0000H: No action
0001H: ORP input low limit action
0002H: ORP input high limit action
0003H: Cleansing output
0004H: ORP input error alarm output
Set value, Decimal point ignored.
Set value, Decimal point ignored.
Set value, Decimal point ignored.
0000H: Medium value
0001H: Reference value
Set value, Decimal point ignored.
Set value, Decimal point ignored.
Set value
Set value
Set value
Set value
Set value
Set value
Set value
0000H: No action
0001H: pH input low limit action
0002H: pH input high limit action
0003H: Temperature input low limit action
0004H: Temperature input high limit action
0005H: Error output
0006H: Fail output
0007H: Cleansing output
0008H: pH input error alarm output
0000H: No action
0001H: ORP input low limit action
0002H: ORP input high limit action
0003H: Cleansing output
0004H: ORP input error alarm output
Set value, Decimal point ignored.
Set value, Decimal point ignored.
Set value, Decimal point ignored.
0000H: Medium value
0001H: Reference value
Set value, Decimal point ignored.
Set value, Decimal point ignored.

ShinkoModbusCommand Function
Type
Code
50H/20H 06H/03H 004AH
50H/20H 06H/03H 004BH
50H/20H 06H/03H 004CH
50H/20H 06H/03H 004DH
50H/20H 06H/03H 004EH
50H/20H 06H/03H 004FH
50H/20H

06H/03H 0050H

50H/20H

06H/03H 0051H

Data Item

Data

EVT4 ON delay time
EVT4 OFF delay time
EVT4 proportional cycle
EVT4 output high limit
EVT4 output low limit
Output ON time when
EVT4 output ON
Output OFF time when
EVT4 output ON
Transmission output 1
type (pH meter)

Transmission output 1
type (ORP meter)
50H/20H

06H/03H 0052H

50H/20H

06H/03H 0053H

50H/20H

06H/03H 0054H

Transmission output 1
high limit
Transmission output 1
low limit
Transmission output 2
type (pH meter)

Transmission output 2
type (ORP meter)

50H/20H

06H/03H 0055H

50H/20H

06H/03H 0056H

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

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

50H/20H

06H/03H 0061H

50H/20H

06H/03H 0063H

50H/20H

06H/03H 0064H

50H/20H

06H/03H 0065H

50H

06H

Transmission output 2high limit
Transmission output 2
low limit

0057H Number of cleansing cycles
0058H Cleansing interval
0059H Cleansing time
005AH Restore time after cleansing
005BH Manual cleansing mode
0060H Set value lock

007FH

Set value
Set value
Set value
Set value
Set value
Set value
Set value
0000H: pH transmission
0001H: Temperature transmission
0002H: EVT1 MV transmission
0003H: EVT2 MV transmission
0000H: ORP transmission
0001H: EVT1 MV transmission
0002H: EVT2 MV transmission
Set value, Decimal point ignored.
Set value, Decimal point ignored.
0000H: pH transmission
0001H: Temperature transmission
0002H: EVT1 MV transmission
0003H: EVT2 MV transmission
0004H: EVT3 MV transmission
0000H: ORP transmission
0001H: EVT1 MV transmission
0002H: EVT2 MV transmission
0003H: EVT3 MV transmission
Set value, Decimal point ignored.
Set value, Decimal point ignored.

Set value
Set value
Set value
Set value
0001H: Manual cleansing mode
0000H: Unlock
0001H: Lock 1
0002H: Lock 2
0003H: Lock 3
0000H: Input value (pH, Temperature)
Display selection
0001H: pH(pH meter)
0002H: Temperature
0000H: No indication
Display selection
0001H: EVT1 value(ORP meter)
0002H: EVT2 value
EVT output when input
0000H: Enabled
errors occur
0001H: Disabled
Display when no0000H: Unlit
temperature compensation 0001H: Reference temperature
0000H: pH meter
Model selection
0001H: ORP meterKey operation change flag 0001H: Clear change flagclearing
17

Shinko Modbus
Command Function
Type
Code
50H/20H 06H/03H 0102H

Data Item
Transmission output 1 statuswhen calibrating (pH meter)
Transmission output 1 status
in Adjustment Mode, Span
Sensitivity Correction Mode
(ORP meter)
Transmission output 1
Set value HOLD
Transmission output 2 statuswhen calibrating (pH meter)
Transmission output 2 status
in Adjustment Mode, Span
Sensitivity Correction Mode
(ORP meter)
Transmission output 2
Set value HOLD
EVT1 pH input error alarm
EVT type

50H/20H

06H/03H 0103H

50H/20H

06H/03H 0104H

50H/20H

06H/03H 0105H

50H/20H

06H/03H 0106H

50H/20H

06H/03H 0107H

EVT2 pH input error alarm
EVT type

50H/20H

06H/03H 0108H

EVT3 pH input error alarm
EVT type

50H/20H

06H/03H 0109H

EVT4 pH input error alarm
EVT type

50H/20H

06H/03H 010AH

50H/20H

06H/03H 010BH

50H/20H

06H/03H 010CH

50H/20H

06H/03H 010DH

50H/20H

06H/03H 010EH

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

EVT1 pH/ORP input error alarmspan when EVT output ON
EVT1 pH/ORP input error alarmtime when EVT output ON
EVT1 pH/ORP input error alarmspan when EVT output OFF
EVT1 pH/ORP input error alarmtime when EVT output OFF
EVT2 pH/ORP input error alarmspan when EVT output ON
EVT2 pH/ORP input error alarmtime when EVT output ON
EVT2 pH/ORP input error alarmspan when EVT output OFF
EVT2 pH/ORP input error alarmtime when EVT output OFF
EVT3 pH/ORP input error alarmspan when EVT output ON
EVT3 pH/ORP input error alarmtime when EVT output ON
18

Data
0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value

Set value, Decimal point ignored.
0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value

Set value, Decimal point ignored.
0000H: No action
0001H: EVT2 type
0002H: EVT3 type
0003H: EVT4 type
0000H: EVT1 type
0001H: No action
0002H: EVT3 type
0003H: EVT4 type
0000H: EVT1 type
0001H: EVT2 type
0002H: No action
0003H: EVT4 type
0000H: EVT1 type
0001H: EVT2 type
0002H: EVT3 type
0003H: No action
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
Set value, Decimal point ignored.
Set valueShinko Modbus
Command Function
Type
Code
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

06H

011BH

50H/20H 06H/03H 011CH
50H/20H 06H/03H 011DH
50H

06H

011EH

50H/20H 06H/03H

011FH

50H/20H 06H/03H

0120H

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

0121H
0122H
0123H
0124H
0125H
0126H
0127H
0128H
0200H
0201H
0202H
0203H
0204H
0205H
0206H
0207H
0208H
0209H

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

Data Item
EVT3 pH/ORP input error alarmspan when EVT output OFF
EVT3 pH/ORP input error alarmtime when EVT output OFF
EVT4 pH/ORP input error alarmspan when EVT output ON
EVT4 pH/ORP input error alarmtime when EVT output ON
EVT4 pH/ORP input error alarmspan when EVT output OFF
EVT4 pH/ORP input error alarmtime when EVT output OFF
pH/ORP input error alarm time
unit
Transmission output 1
adjustment mode

Transmission output 1 Zeroadjustment value
Transmission output 1 Spanadjustment value
Transmission output 2
adjustment mode

Transmission output 2 Zeroadjustment value
Transmission output 2 Spanadjustment value
EVT1 cycle variable range
EVT2 cycle variable range
EVT3 cycle variable range
EVT4 cycle variable range
EVT1 cycle extended time
EVT2 cycle extended time
EVT3 cycle extended time
EVT4 cycle extended time
User save area 1
User save area 2
User save area 3
User save area 4
User save area 5
User save area 6
User save area 7
User save area 8
User save area 9
User save area 10
19

Data
Set value, Decimal point ignored.
Set value
Set value, Decimal point ignored.
Set value
Set value, Decimal point ignored.
Set value
0000H: Seconds
0001H: Minutes
0000H: pH-Temperature/ORP Display
Mode, or Cleansing Output Mode

0001H: Transmission output 1 Zeroadjustment mode
0002H: Transmission output 1 Spanadjustment modeSet value, Decimal point ignored.
Set value, Decimal point ignored.
0000H: pH-Temperature/ORP Display
Mode, or Cleansing Output Mode

0001H: Transmission output 2 Zeroadjustment mode
0002H: Transmission output 2 Spanadjustment 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-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)

7.3 Read Only Command
ShinkoModbusCommand Function
Type
Code
20H
03H
0080H
20H

03H

0081H

20H
20H

03H
03H

0084H
0085H

Data Item

Data

pH/ORP value

pH/ORP value,
Decimal point ignored.

Status flag 10000 0000 0000 0000
215
to
20
(pH meter)
20 digit: Response speed error
0: Normal 1: Error
21 digit: Electrode sensitivity error
0: Normal 1: Error
22 digit: Asymmetry potential error
0: Normal 1: Error
23 digit: Standard solution error
0: Normal 1: Error
24 digit: pH 10 solution temperature error 0: Normal 1: Error
25 digit: Temperature sensor burnout
0: Normal 1: Burnout
6
2 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: pH measurement value has exceeded pH 14.00
0: Normal
1: Exceeding pH 14.00
210 digit: pH measurement value is less than pH 0.00
0: Normal
1: Less than pH 0.00
211 digit: Unit status
0: pH-Temperature/ORP Display Mode,or Cleansing Output Mode
1: Setting mode
212, 213 digits: Calibration status flag
213 212
Status00 Standby0
1 During the 1st point calibration
1
0 During the 2nd point calibration
1
1 Calibration complete
214 digit: Not used (Always 0)
215 digit: Change in key operation 0: No 1: Yes(ORP meter)
20 to 28 digit: Not used (Always 0)
29 digit: ORP measured value has exceeded 2000 mV
0: Normal 1: Exceeding 2000 mV
10
2 digit: ORP measured value is less than -2000 mV
0: Normal 1: Less than -2000 mV
211 digit: Unit status
0: pH-Temperature/ORP Display Mode, or Cleansing Output Mode
1: Setting mode
212 digit: Adjustment status flag
0: pH-Temperature/ORP Display Mode, or Cleansing Output Mode
1: Adjustment Mode
213 digit: Span sensitivity correction status flag
0: pH-Temperature/ORP Display Mode, or Cleansing Output Mode
1: Span Sensitivity Correction Mode
214 digit: Not used (Always 0)
215 digit: Change in key operation 0: No 1: Yes
EVT1 MVMV, Decimal point ignored.
EVT2 MVMV, Decimal point ignored.
20

ShinkoModbusCommand Function
Type
Code
20H
03H
20H
03H
20H
03H
0H
03H

Data Item
0086H
0087H
0090H
0091H

Data

MV, Decimal point ignored.
EVT3 MVMV, Decimal point ignored.
EVT4 MV
Temperature, Decimal point ignored.
Temperature
Status flag 20000 0000 0000 0000
215
to
20
20 digit: EVT1 output
0: OFF
1: ON
1
2 digit: EVT2 output
0: OFF
1: ON
22 digit: EVT3 output
0: OFF
1: ON
3
2 digit: EVT4 output
0: OFF
1: ON
24 digit: EVT1 output flag (*) 0: OFF
1: ON
5
2 digit: EVT2 output flag (*) 0: OFF
1: ON
26 digit: EVT3 output flag (*) 0: OFF
1: ON
7
2 digit: EVT4 output flag (*) 0: OFF
1: ON
28 digit: Cleansing action (Cleansing time)
0: Programmed action
1: During cleansing time
9
2 digit: Cleansing action (Restore time after cleansing)
0: Programmed action
1: During restore time after cleansing
210 digit: Manual cleansing action
0: No manual cleansing action
1: During manual cleansing action
11
12
2 to 2 digits: Transmission output 1 adjustment status flag
212 211
Status00
pH-Temperature/ORP Display Mode,or Cleansing Output Mode01
During Transmission output 1 Zero adjustment inTransmission output 1 adjustment mode
10
During Transmission output 1 Span adjustment inTransmission output 1 adjustment mode
213 to 214 digits: Transmission output 2 adjustment status flag
214 213
Status00
pH-Temperature/ORP Display Mode,or Cleansing Output Mode01
During Transmission output 2 Zero adjustment inTransmission output 2 adjustment mode
10
During Transmission output 2 Span adjustment inTransmission output 2 adjustment mode

20H
20H

03H
03H

0100H
0101H

215 digit: Not used (Always 0)
Zero indication
Indicated value, Decimal point ignored.
Span indication
Indicated value, Decimal point ignored.

(*) EVT output flag:
When(Cleansing output) is selected in [EVT type]: The EVT output flag sets
to 1 (ON).
If any item other than
(Cleansing output) is selected:
When EVT output is turned ON: The EVT output flag sets to 1 (ON).
When EVT output is turned OFF: The EVT output flag sets to 0 (OFF).

21

7.4 pH Calibration, ORP Calibration and Transmission Output Adjustment via Communication
Command7.4.1 pH Calibration
Like a keypad operation, there are also 2 methods in pH calibration via communication command:
Automatic Calibration and Manual Calibration(1) Automatic Calibration
Automatic Calibration is performed in sequence from the 1st standard solution pH 7 (JIS or US
standard), which is selected at Data item 0001H (pH 7 calibration standard), and then the 2nd solution[pH 2, pH 4, pH 9, pH 10 (JIS)] selected at Data item 0002H (2nd solution).
pH value (based on JIS Z8802) at each temperature of pH standard solution is automatically calculated.
The following outlines the procedure for Automatic calibration.
• The 1st Point Automatic Calibration
1 Immerse the pH Combined Electrode Sensor in the 1st standard solution (pH 7).
When selecting Last value HOLD (0000H) at Data item 0102H (Transmission output 1 statuswhen calibrating) or at Data item 0104H (Transmission output 2 status when calibrating),
select it while the sensor is being immersed in the solution currently calibrated.
After that, immerse the sensor in the 1st point standard solution (pH 7).
2 Set Data item 0008H (pH calibration mode) to 0001H.
The unit proceeds to pH calibration mode.
3 Set Data item 0009H (pH calibration start) to 0001H.
The 1st point automatic calibration starts.
4 If 213, 212 digits are read at Data item 0081H (Status flag 1), 01 (During the 1st point calibration)
will be returned during automatic calibration.
Automatic calibration is performed using the Automatic electrode quality evaluation function.
5 If 213, 212 digits are read at Data item 0081H (Status flag 1), 00 (Standby) will be returned after
automatic calibration is complete.
6 Set 0009H (pH calibration start) to 0002H.
The 1st point automatic calibration is completed, and the unit moves to the 2nd point automatic
calibration mode.
• The 2nd Point Automatic Calibration
1 Rinse the electrode, then immerse the pH Combined Electrode Sensor in the 2nd standard
solution.
2 Set the Data item 0009H (pH calibration start) to 0003H.
Automatic calibration for the 2nd point starts.
3 If 213, 212 digits are read at Data item 0081H (Status flag 1), 10 (During the 2nd point calibration)
will be returned during automatic calibration.
Automatic calibration is performed using the Automatic electrode quality evaluation function.
4 If 213, 212 digits are read at Data item 0081H (Status flag 1), 11 (Calibration complete) will be
returned after automatic calibration is completed.
5 Set Data item 0009H (pH calibration start) to 0004H.
Automatic calibration for the 2nd point is complete.
6 Set Data item 0008H (pH calibration mode) to 0000H.
The pH automatic calibration is complete, and the unit will revert to pH-Temperature/ORP Display
Mode, or Cleansing Output Mode.
(2) Manual Calibration
When there is a difference of pH 2 or more, Manual calibration can be performed using the randomly
selected 2 kinds of solution.
The following outlines the procedure for Manual calibration.
• The 1st Point Manual Calibration
1 Immerse the pH Combined Electrode Sensor in the 1st standard solution.
When selecting Last value HOLD (0000H) at Data item 0102H (Transmission output 1 statuswhen calibrating) or at Data item 0104H (Transmission output 2 status when calibrating),
select it while the sensor is being immersed in the solution currently calibrated.
After that, immerse the sensor in the 1st point standard solution.
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2

Set Data item 0008H (pH calibration mode) to 0001H.
Set Data item 0009H (pH calibration start) to 0001H.
Manual calibration for the 1st point starts.
4 If 213, 212 digits are read at Data item 0081H (Status flag 1), 01 (During the 1st point calibration)
will be returned during manual calibration.
5 Set the 1st point pH calibration value at Data item 000AH (1st point pH calibration value).
6 Set Data item 0009H (pH calibration start) to 0002H.
Manual calibration for the 1st point is complete, and the unit enters the 2nd point manual
calibration mode.
7 If 213, 212 digits are read at Data item 0081H (Status flag 1), 00 (Standby) will be returned after
manual calibration is complete.
3• The 2nd Point Manual Calibration
1 Rinse the electrode, then immerse the pH Combined Electrode Sensor in the 2nd standard solution.
2 Set Data item 0009H (pH calibration start) to 0003H.
Manual calibration for the 2nd point starts.
3 If 213, 212 digits are read at Data item 0081H (Status flag 1), 10 (During the 2nd point calibration)
will be returned during manual calibration.
4 Set the 2nd point pH calibration value at Data item 000BH (2nd point pH calibration value).
5 Set Data item 0009H (pH calibration start) to 0004H.
Manual calibration for the 2nd point will be complete.
6 If 213, 212 digits are read at Data item 0081H (Status flag 1), 11 (Calibration complete) will be
returned after manual calibration is complete.
7 Set Data item 0008H (pH calibration mode) to 0000H.
The pH manual calibration is complete, and the unit will revert to pH-Temperature/ORP Display
Mode, or Cleansing Output Mode.
(3) Error Code during pH Calibration
During pH calibration, if pH calibration cannot be performed due to unstable pH input, temperaturecompensation error, etc., the “Error code 1 (Error, Burnout, Short-circuited, etc.)” will be returned after
20 digit to 210 digit are read at Data item 0081H (Status flag 1).
To release the Error code, set Data item 0008H (pH calibration mode) to 0000H.
The unit will return to pH-Temperature/ORP Display Mode, or Cleansing Output Mode.
If Data item 0009H (pH calibration start) is set during pH calibration of the 1st or 2nd point, the following
error code will be returned:
Shinko protocol: Error code 34H
Modbus protocol: Exception code 11H
7.4.2 ORP Calibration
Like a keypad operation, there are also 2 methods in ORP calibration via communication command:
Adjustment Mode and Span Sensitivity Correction Mode
(1) Adjustment mode
When using a brand-new sensor, please calibrate in Adjustment Mode.
By setting the adjustment value, calibrates ORP value indicated on the instrument to read 260 mV (at20 ) when immersing the ORP Combined Electrode Sensor in the standard solution (Quinhydrone
potential difference 260 mV).
The following outlines the procedure for calibration.
1

When selecting Last value HOLD (0000H) at Data item 0102H (Transmission output 1 status
in Adjustment Mode, Span Sensitivity Correction Mode ) or at Data item 0104H (Transmission
output 2 status in Adjustment Mode, Span Sensitivity Correction Mode), select it while the sensor
is being immersed in the solution currently calibrated.
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2

Set Data item 000EH (Adjustment mode) to 0001H.
The unit enters Adjustment Mode.
3 Immerse the ORP Combined Electrode Sensor in the standard solution (Quinhydrone potential
difference 260 mV).
4 Set an adjustment value at Data item 000FH (Adjustment value) so that the ORP value isapproximately 260 mV (at 20 ).
For other temperature and electrical potentials, refer to the temperature characteristics of yourstandard solution.
If 212 digit is read at Data item 0081H, 1 (Adjustment Mode) will be returned.
5 Set Data item 000EH (Adjustment mode) to 0000H.
Adjustment mode is complete, and the unit reverts to pH-Temperature/ORP Display Mode, orCleansing Output Mode.
If 212 digit is read at Data item 0081H, 0 (pH-Temperature/ORP Display Mode, or Cleansing Output
Mode) will be returned.
In Adjustment Mode, if adjustment cannot be performed due to errors (e.g. ORP value is outside themeasurement range), Error code 1 (Exceeding 2000 mV, Less than -2000 mV) will be returned after
29 to 210 digits are read at Data item 0081H (Status flag 1).
To cancel the error code, set Data item 000EH (Adjustment mode) to 0000H.
The unit will return to pH-Temperature/ORP Display mode or Cleansing Output mode.
(2) Span Sensitivity Correction mode
When calibrating periodically, please calibrate in Span Sensitivity Correction Mode.

By setting the Span sensitivity correction value in percentage, calibrates ORP value indicated on theunit to read 260 mV (at 20 ) when immersing the ORP Combined Electrode Sensor in the standard
solution (Quinhydrone potential difference 260 mV).
The following outlines the procedure for calibration.
1

When selecting Last value HOLD (0000H) at Data item 0102H (Transmission output 1 status
in Adjustment Mode, Span Sensitivity Correction Mode) or at Data item 0104H (Transmission output
2 status in Adjustment Mode, Span Sensitivity Correction Mode), select it while the sensor
is being immersed in the solution currently calibrated.
2 Set Data item 0010H (Span sensitivity correction mode) to 0001H.
The unit enters Span Sensitivity Correction mode.
3 Immerse the ORP Combined Electrode Sensor in the standard solution (Quinhydrone potential
difference 260 mV).
4 Set an adjustment value at Data item 0011H (Span sensitivity correction value) so that the ORP
value can be approximately 260 mV (at 20 ).
For other temperature and electrical potentials, refer to the temperature characteristics of yourstandard solution.
If 213 digit is read at Data item 0081H, 1 (Span Sensitivity Correction Mode) will be returned.
5 Set Data item 0010H (Span Sensitivity Correction Mode) to 0000H.
Span Sensitivity Correction mode is complete, and the unit reverts to pH-Temperature/ORP Display
Mode, or Cleansing Output Mode.
If 213 digit is read at Data item 0081H, 0 (pH-Temperature/ORP Display Mode, or Cleansing Output
Mode) will be returned.
In Span Sensitivity Correction Mode, if span sensitivity correction cannot be performed due to errors(e.g. ORP value is outside of the measurement range), Error code 1 (Exceeding 2000 mV, Less than-2000 mV) will be returned after 29 to 210 digits are read at Data item 0081H (Status flag 1).
To cancel the Error code, set Data item 0010H (Span Sensitivity Correction Mode) to 0000H.
The unit will return to pH-Temperature/ORP Display Mode, or Cleansing Output Mode.
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7.4.3 Transmission Output 1 Adjustment
Fine adjustment of Transmission output 1 is performed.
This ORP meter is adjusted at the factory, however, differences may occur between the indication
value of the connected equipment (recorders, etc.) and 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 011BH (Transmission output 1 adjustment mode) to 0001H.
The unit moves to Transmission output 1 Zero adjustment mode.
If 212, 211 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 011CH (Transmission output 1
Zero adjustment value), while viewing the value indicated on the connected equipment (recorders,etc.).
Setting range: 5.00% of Transmission output span
3 Set Data item 011BH (Transmission output 1 adjustment mode) to 0002H.
The unit moves to Transmission output 1 Span adjustment mode.
If 212, 211 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 011DH (Transmission output 1 Spanadjustment value), while viewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output span
5 Repeat steps 1 to 4 if necessary.
6 To finish the Transmission output 1 adjustment, set Data item 011BH (Transmission output 1
adjustment mode) to 0000H.
The unit reverts to pH-Temperature/ORP Display Mode, or Cleansing Output Mode.

7.4.4 Transmission Output 2 Adjustment
Fine adjustment of Transmission output 2 is performed.
This ORP meter is adjusted at the factory, however, differences may occur between the indication
value of the connected equipment (recorders, etc.) and 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 011EH (Transmission output 2 adjustment mode) to 0001H.
The unit moves to Transmission output 2 Zero adjustment mode.
If 214, 213 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 011FH (Transmission output 2
Zero adjustment value), while viewing the value indicated on the connected equipment (recorders,etc.).
Setting range: 5.00% of Transmission output span
3 Set Data item 011EH (Transmission output 2 adjustment mode) to 0002H.
The unit moves to Transmission output 2 Span adjustment mode.
If 214, 213 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 0120H (Transmission output 2 Spanadjustment value), while viewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output span
5 Repeat steps 1 to 4 if necessary.
6 To finish the Transmission output 2 adjustment, set Data item 011EH (Transmission output 2
adjustment mode) to 0000H.
The unit reverts to pH-Temperature/ORP Display Mode, or Cleansing Output Mode.

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7.5 Notes on Programming Monitoring Software
7.5.1 How to speed up the scan time
When monitoring multiple units of FEB-102-PH, set the program so that the requisite minimum pieces ofdata such as Data item 0080H (pH/ORP value), 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 be read 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 the front keypad operation
If any set value is changed by keypad operation, the FEB-102-PH will set [0081H (Status flag 1) 2 15:
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) 2 15: Change in key operation]
has been 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 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) 2 15: 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) 2 15: Change in key operation]
has been set to 1 (Yes), then set 007FH (Key operation change flag clearing) to 0001H (Clearchange flag).
2

Set the program depending on 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(pH/ORP value), 0090H (Temperature), 0081H (Status flag 1), 0091H (Status flag 2), then returnto step 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 at one time
• When EVT type is changed at Data item 0019H (EVT1 type), 0027H (EVT2 type), 0035H (EVT3 type),
0043H (EVT4 type), the EVT1 to EVT4 values will default to 0 (zero).
The EVT 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 item 001AH (EVT1 value), 0028H (EVT2 value), 0036H(EVT3 value) and 0044H (EVT4value).

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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 pH, temperature ORP value, or its status(3) Function change, adjustment(4) Reading and setting of user save area
1.2 km (Max.), Cable resistance: Within 50(Terminators are not necessary, but if used, use 120
or more on one side.)
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 Shinko
Modbus ASCII
Modbus RTU
ProtocolProtocolStart bit1
1
1
Data bit
7
7
8
ParityEven
Even (No parity, Odd) No parity (Even, Odd)
Selectable
Selectable
Stop bit
1
1 (2)
1 (2)
Selectable
Selectable27

9. Troubleshooting
Check that power is being supplied to the master and slave that customers use. If communication failure
still occurs, check the following.
Problem
Communication failure

Possible Cause
Communication cable is not securely
connected/disconnected or defective.
Incorrect wiring of the communication
cable and connector
Imperfect contact between thecommunication cable and theconnector or communication
connector and instrument port
Communication speed of the slave
does not match that of the master.
The data bit, parity and stop bit of
the master do not correspond to
those of the slave.
The instrument number (address)of the slave does not correspondto that of the command.
The instrument numbers(addresses) are duplicated in
multiple slaves.
Make sure that the program isappropriate for the transmission
timing.
Although communication A non-existent command code has
is occurring, the response been sent.
is NAK (negative
The setting command dataacknowledgement).
exceeds the setting range of theslave.
The FEB-102-PH cannot be set
while calibration is being
performed using the Automaticelectrode quality evaluation
function.
The FEB-102-PH is in the front
keypad operation setting mode.

Solution
Check the communication cableand connector.
Check the communication cableand connector.
Check the communication cableand connector.

Check the communication speedof the slave and master.
Check the data bit, parity andstop bit of the master and theslave.
Check the instrument number(address) of the slave andcommand.
Check the instrument numbers(addresses) of the slave.
Check the program.

Check the command code.
Check the setting range of theslave.
Check the slave status.

Return the unit to pH-Temperature/
ORP Display Mode, or Cleansing
Output Mode.

For all other malfunctions, please contact our main office or dealers.

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