AER-102-PH (C5)COMMUNICATION INSTRUCTION MANUAL

No. AER1CPHE5 2019.06
This manual contains instructions for the communication functions of the AER-102-PH.
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-PH
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
RS-485(Fig. 1-2)
1

AER-102-PH
No. 0

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 included wire harness (C0J: Between IF-400 and AER-102-PH, C5J: Between AER-102-PH
units), shield wire and CDM (sold separately).
When using USB Communication cable CMC-001-1:
Use the included wire harness (C0J: Between IF-400 and AER-102-PH, C5J: Between AER-102-PH
units).
• When using Communication converter IF-400• When using USB Communication cable CMC-001-1

Communication converter
IF-400(Sold separately)

Host computer

Host computer

Shield wireFG

USB communication cable
CMC-001-1(Sold separately)

To relay CDM and C0J,
use a terminal block(commercially available).

To relay CMC-001-1 and C0J,
use a terminal block (commerciallyavailable).

Yellow

Yellow

Blue
Black

Blue
Black

CDM (soldseparately)

AER-102-PH (Max. 31 units)
No. 1

No. 0

C0J

No. 30C5J
C5J

2 connectors 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
pair cable.)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 multiple peripheral devices to apersonal computer. The terminator prevents signal reflection and disturbance.
Do not connect a terminator to the communication line because each AER-102-PH 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.
(1)

Press thekey 5 times in pH/Temperature Display Mode, or Cleansing Output
Mode.
key 7 times in
If EVT3, EVT4 Outputs (EVT3 option) are/is ordered, press the(2)

Press thepH/Temperature Display Mode, or Cleansing Output Mode.
key twice.

The unit enters the Basic Function group. “Communication protocol” item appears.
(3) Make a selection using theCharacteror

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
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

key multiple times. The unit will revert to pH/Temperature Display Mode, or(4) Press the
Cleansing Output Mode.

34. Communication ProcedureCommunication starts with command transmission from the host computer (hereafter Master), andends with the response of the AER-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 (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
character transmission 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
HeaderData
CommandAddress
Data
Checksumaddress(02H)
itemtype (50H)
(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
Header:Delimiter(03H)
1

Checksum
2

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 issent 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:

Classification of the command object.
Composed of 4-digit hexadecimal numbers, using ASCII.
Refer to “7. Communication Command Table”. (pp.11 to 21)

Data:

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)

Checksum:

2-character data to detect communication errors. Refer to “5.3 Checksum Calculation”.

Delimiter:Control code to represent the end of command.
ASCII code ETX (03H) fixedError code:

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 automatic calibration using theAutomatic 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 0008H (pH calibration 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

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
Checksum[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

1101

[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 ASCII mode 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-PH 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)].
Error check
Delimiter Delimiter
HeaderSlave
Function
Data
LRC
(CR)
(LF)
(:)
addresscode
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
Error check3.5 idle
Slave
Function
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 addressin the response message.
Slave address 00H (Broadcast address) can identify all the slaves connected. However, slaves do
not respond.
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 tothe 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 forthe 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)
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 automatic calibration using the Automatic electrode quality
evaluation function
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 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.
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 isadded 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.
8

4

5

6
7
8

9

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 .
Repeat steps 3 and 4 until shifting 8 times.
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.
Reading [Slave address 1, Data item 0080H (pH)]• 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

1

• Response message from the slave in normal status [(e.g.) pH 1.00 (0064H)]
The response byte count means the byte count of data which have been read.
It is fixed as (30H 32H).
Response
Header Slave
Data
Error check Delimiter
Functionbyte countaddress[0064H]
LRC
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 (pH calibration value)• A request message from the master [When pH calibration value is set to 1.00 (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 (pH)]• 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

• Response message from the slave in normal status [(e.g.) pH 1.00 (0064H)]
The response byte count means the byte count of data which has been read.
It is fixed as (02H).
Slave
Function
Response
Data
Error check3.5 idle
addresscodebyte countCRC-16characters
(01H)
(03H)
(02H)
(0064H)(B9AFH)1
1
1
2
2

3.5 idle
characters

3.5 idle
characters• 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 (pH calibration value)• A request message from the master [When pH calibration value is set to 1.00 (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 Notes about Setting/Reading Command• 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.
• 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 (2nd solution) 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 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, 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 such as EVT1, EVT2, EVT3 and EVT4 types. If they are changed, they willaffect other setting 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 EVT1, EVT2, EVT3 or EVT4 type is changed at Data items 0003H (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 output status of EVT1, EVT2, EVT3 or 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 by Global address [95 (7FH), Shinko protocol] or Broadcast address [(00H),
MODBUS protocol], the same command is sent to all the slaves connected. However, the response 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.

117.2 Setting/Reading Command
Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0001H 2nd solution

Data

50H/20H 06H/03H 0002H pH input decimal point
place
50H/20H 06H/03H 0003H EVT1 type

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

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

0004H
0005H
0006H
0007H
0008H
0009H

EVT1 value
EVT1 ON side
EVT1 ON delay time
EVT1 OFF delay time
pH calibration value
pH 7 calibration standard

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

0010H
0011H
0012H
0013H
0014H
0015H
0016H
0017H
0018H
0019H
001AH
001BH
0021H

EVT1 proportional band
EVT1 reset
EVT1 proportional cycle
EVT2 proportional band
EVT2 reset
EVT2 proportional cycle
EVT3 proportional band
EVT3 reset
EVT3 proportional cycle
EVT4 proportional band
EVT4 reset
EVT4 proportional cycle
Electrode RTD

0000H: pH 2
0001H: pH 4
0002H: pH 9
0003H: pH 10
0000H: No decimal point
0001H: 1 digit after decimal point
0002H: 2 digits after decimal point
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
0009H: pH fluctuation alarm output
000AH: pH input High/Low limits
independent action
000BH: 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.)
0000H: JIS
0001H: US standard
JIS stands for Japanese Industrial Standards.

50H/20H 06H/03H 0022H Temperature input decimal
point place
50H/20H 06H/03H 0023H Reference temperature
50H/20H 06H/03H 0028H Temperature calibration
value
12

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
Pt spec:
0000H: No temperature compensation
0001H: Pt1000
0002H: Pt100
Cu spec:
0000H: No temperature compensation
0001H: Cu500
0000H: No decimal point
0001H: 1 digit after decimal pointSet value (Decimal point ignored.)
Set value (Decimal point ignored.)Shinko MODBUS
Command Function
Type
Code
50H/20H 06H/03H 0030H

Set value lock50H/20H 06H/03H

0031H

Transmission output 1 type

50H/20H 06H/03H
50H/20H 06H/03H
50H/20H 06H/03H

0032H
0033H
0034H

Transmission output 1 high limit
Transmission output 1 low limit
pH calibration Auto/Manual

50H/20H 06H/03H
50H
06H

0037H
0038H

Backlight time
pH calibration mode

0039H

pH calibration start

50H/20H 06H/03H
50H/20H 06H/03H

0040H
0041H

50H/20H 06H/03H
50H/20H 06H/03H
50H/20H 06H/03H

0042H
0043H
0048H

50H/20H 06H/03H

0049H

pH input filter time constant
EVT output when input errors
occur
Cable length correction
Cable cross-section area
Output ON time when EVT1
output ON
Output OFF time when EVT1
output ON
Output ON time when EVT2
output ON
Output OFF time when EVT2
output ON
Output ON time when EVT3
output ON
Output OFF time when EVT3
output ON
Output ON time when EVT4
output ON
Output OFF time when EVT4
output ON

50H

06H

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

Data Item

Data
0000H: Unlock
0001H: Lock 1
0002H: Lock 2
0003H: Lock 3
0000H: pH transmission
0001H: Temperature transmission
0002H: MV1 transmission (*1)
0003H: MV2 transmission
0004H: MV3 transmission (*2)
0005H: MV4 transmission (*2)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
0000H: Automatic
0001H: ManualSet value
0000H: pH/Temperature 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.)
0000H: Enabled
0001H: Disabled
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value(*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)

13

Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0050H EVT2 type

Data

50H/20H 06H/03H 0051H EVT3 type

50H/20H 06H/03H 0052H EVT4 type

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

140000H: 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
0009H: pH fluctuation alarm output
000AH: pH input High/Low limits
independent action
000BH: Temperature input High/Low
limits independent action
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
0009H: pH fluctuation alarm output
000AH: pH input High/Low limits
independent action
000BH: Temperature input High/Low
limits independent action
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
0009H: pH fluctuation alarm output
000AH: pH input High/Low limits
independent action
000BH: 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
Data ItemType
Code
50H/20H 06H/03H 0063H Backlight selection

50H/20H 06H/03H 0064H

50H/20H 06H/03H 0065H
50H/20H 06H/03H 0066H

50H/20H 06H/03H 0067H
50H/20H 06H/03H 0068H
50H/20H 06H/03H 0069H
50H/20H 06H/03H 006FH
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H
50H/20H

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

0070H
0071H
0072H
0073H
0074H
0075H
0076H
0077H
007FH
0100H

50H/20H 06H/03H 0101H
50H/20H 06H/03H 0102H
50H/20H 06H/03H 0103H
50H/20H
50H/20H
50H/20H
50H/20H

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

0104H
0105H
0106H
0107H

Data

0000H: All are backlit
0001H: pH Display
0002H: Temperature Display
0003H: Action indicators
0004H: pH Display + Temperature
Display
0005H: pH Display + Action
indicators
0006H: Temperature Display +Action indicators
pH color
0000H: Green
0001H: Red
0002H: Orange
0003H: pH color changes
continuously
pH color range
Set value (Decimal point ignored.)
Bar graph indication
0000H: No indication
0001H: Transmission output 1
0002H: Transmission output 2 (*)
Set value (Decimal point ignored.)
pH color reference value
Set value (Decimal point ignored.)
pH input sensor correction
Temperature Display when
0000H: Unlit
no temperature compensation
0001H: Reference temperature
Pt100 input wire type
0000H: 2-wire type
0001H: 3-wire type
EVT1 output high limit
Set value
EVT1 output low limit
Set value
EVT2 output high limit
Set value
EVT2 output low limit
Set value
EVT3 output high limit
Set value
EVT3 output low limit
Set value
EVT4 output high limit
Set value
EVT4 output low limit
Set value
Key operation change flag clearing 0001H: Clear change flag
EVT1 hysteresis type
0000H: Medium Value
0001H: Reference Value
EVT2 hysteresis type
0000H: Medium Value
0001H: Reference Value
EVT3 hysteresis type
0000H: Medium Value
0001H: Reference Value
EVT4 hysteresis type
0000H: Medium Value
0001H: Reference Value
Set value (Decimal point ignored.)
EVT1 OFF side
Set value (Decimal point ignored.)
EVT2 OFF side
Set value (Decimal point ignored.)
EVT3 OFF side
Set value (Decimal point ignored.)
EVT4 OFF side(*) 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)

15

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

Data Item
0108H
0109H
010AH
010BH
010CH
010FH

Number of cleansing cycles
Cleansing interval
Cleansing time
Restore time after cleansing
Manual cleansing mode
Transmission output 1 statuswhen calibrating

50H/20H 06H/03H 0110H Transmission output 1 value
HOLD when calibrating
50H/20H 06H/03H 0111H EVT1 pH input error alarm
EVT type

50H/20H 06H/03H 0112H EVT2 pH input error alarm
EVT type

50H/20H 06H/03H 0113H EVT3 pH input error alarm
EVT type

50H/20H 06H/03H 0114H EVT4 pH input error alarm
EVT type

50H/20H 06H/03H 0115H EVT1 pH input error alarm band
when EVT output ON
50H/20H 06H/03H 0116H EVT1 pH input error alarm time
when EVT output ON
50H/20H 06H/03H 0117H EVT1 pH input error alarm band
when EVT output OFF
50H/20H 06H/03H 0118H EVT1 pH input error alarm time
when EVT output OFF
50H/20H 06H/03H 0119H EVT2 pH input error alarm band
when EVT output ON
50H/20H 06H/03H 011AH EVT2 pH input error alarm time
when EVT output ON
50H/20H 06H/03H 011BH EVT2 pH input error alarm band
when EVT output OFF
50H/20H 06H/03H 011CH EVT2 pH input error alarm time
when EVT output OFF

Data
Set value
Set value
Set value
Set value
0001H: Manual cleansing mode
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 (*1)
0003H: EVT4 type (*1)
0000H: EVT1 type (*2)
0001H: No action
0002H: EVT3 type (*1)
0003H: EVT4 type (*1)
0000H: EVT1 type (*2)
0001H: EVT2 type
0002H: No action
0003H: EVT4 type
0000H: EVT1 type (*2)
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(*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)

16

Shinko MODBUS
Comman Function
Data Itemd TypeCode50H/20H 06H/03H 011DH EVT3 pH input error alarm band
when EVT output ON
50H/20H 06H/03H 011EH EVT3 pH input error alarm time
when EVT output ON
50H/20H 06H/03H 011FH EVT3 pH input error alarm band
when EVT output OFF
50H/20H 06H/03H 0120H EVT3 pH input error alarm time
when EVT output OFF
50H/20H 06H/03H 0121H EVT4 pH input error alarm band
when EVT output ON
50H/20H 06H/03H 0122H EVT4 pH input error alarm time
when EVT output ON
50H/20H 06H/03H 0123H EVT4 pH input error alarm band
when EVT output OFF
50H/20H 06H/03H 0124H EVT4 pH input error alarm time
when EVT output OFF
50H/20H 06H/03H 0125H pH input error alarm time unit
50H/20H

06H/03H

0126H Transmission output 1
adjustment mode

50H/20H

06H/03H

50H/20H

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
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
06H/03H
06H/03H

0127H Transmission output 1 Zeroadjustment value
0128H Transmission output 1 Spanadjustment value
0129H EVT1 cycle variable range
012AH EVT2 cycle variable range
012BH EVT3 cycle variable range
012CH EVT4 cycle variable range
012DH EVT1 cycle extended time
012EH EVT2 cycle extended time
012FH EVT3 cycle extended time
0130H EVT4 cycle extended time
0131H EVT1 pH fluctuation alarm time0132H EVT2 pH fluctuation alarm time0133H EVT3 pH fluctuation alarm time0134H EVT4 pH fluctuation alarm time0135H EVT1 pH fluctuation alarm band
0136H EVT2 pH fluctuation alarm band
0137H EVT3 pH fluctuation alarm band
0138H EVT4 pH fluctuation alarm band

17

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: pH/Temperature 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.)
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
Set value
Set value
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 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
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

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

0141H
0142H
0143H
0144H
0145H

50H/20H 06H/03H 0146H
50H/20H 06H/03H 0147H

50H/20H 06H/03H 0148H
50H/20H 06H/03H 0149H
50H/20H 06H/03H 014AH

50H/20H 06H/03H 014BH
50H/20H 06H/03H 014CH
50H/20H 06H/03H 014DH

50H/20H 06H/03H 014EH

Data Item

Data

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
EVT1 hysteresis
EVT2 hysteresis
EVT3 hysteresis
EVT4 hysteresis
Transmission output 1 statuswhen cleansing

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.)

Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value
Transmission output 1 value HOLD Set value (Decimal point ignored.)when cleansing
Transmission output 2 type
0000H: pH transmission
0001H: Temperature transmission
0002H: MV2 transmission
0003H: MV3 transmission (*1)
0004H: MV4 transmission (*1)
Set value (Decimal point ignored.)Transmission output 2 high limit
Set value (Decimal point ignored.)Transmission output 2 low limit
Transmission output 2 adjustment 0000H: pH/Temperature Display
Mode, or Cleaning Output Mode.
mode (*2)
0001H: Transmission output 2 Zeroadjustment mode
0002H: Transmission output 2 Spanadjustment modeSet value (Decimal point ignored.)Transmission output 2 Zeroadjustment value
Set value (Decimal point ignored.)Transmission output 2 Spanadjustment value
Transmission output 2 status
0000H: Last value HOLD
when calibrating
0001H: Set value HOLD
0002H: Measured value
Transmission output 2 value
Set value (Decimal point ignored.)
HOLD when calibrating(*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)18

Shinko MODBUS
Command Function

Data ItemType
Code
50H/20H 06H/03H 014FH Transmission output 2 statuswhen cleansing
50H/20H 06H/03H 0150H
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

0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value
Transmission output 2 value HOLD Set value (Decimal point ignored.)when cleansing
Set value
pH 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)

19

7.3 Read Only Command
Shinko MODBUS
Command Function
Data Item
Data
Type
Code
20H
03H
0080H pHpH (Decimal point ignored.)
20H
03H
0081H Status flag 10000 0000 0000 0000
to
20
215
0: Normal 1: Error
20 digit: Response speed error
0: Normal 1: Error
21 digit: Electrode sensitivity error
22 digit: Asymmetry potential error
0: Normal 1: Error
0: Normal 1: Error
23 digit: Standard solution error
24 digit: pH 10 solution temperature error 0: Normal 1: Error
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: 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 flag
0: pH/Temperature Display Mode, orCleansing 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
20H
20H
20H
20H
20H

03H
03H
03H
03H
03H

0084H
0085H
0086H
0087H
0090H

EVT1 Manipulated Variable
EVT2 Manipulated Variable
EVT3 Manipulated Variable
EVT4 Manipulated Variable

Temperature

20

MV (Decimal point ignored.)MV (Decimal point ignored.)MV (Decimal point ignored.)MV (Decimal point ignored.)Temperature,(Decimal point ignored.)Shinko MODBUS
Command Function
Data Item
Data
Type
Code
20H
03H
0091H Status flag 20000 0000 0000 0000
to
20
215
0 digit: EVT1 output
0: OFF
1: ON
2
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 digit: EVT1 output flag (*) 0: OFF
1: ON
1: ON
25 digit: EVT2 output flag (*) 0: OFF
1: ON
26 digit: EVT3 output flag (*) 0: OFF
27 digit: EVT4 output flag (*) 0: OFF
1: ON
28 digit: Cleansing action (Cleansing time)
0: Programmed action 1: During cleansing time
29 digit: Cleansing action (Restore time after cleansing)
0: Programmed action 1: During restore time after cleansing
210 digit: Manual cleansing action status flag
0: Manual cleansing action inactive
1: During Manual cleansing action
211, 212 digits: Transmission output 1 adjustment status flag
212 211
Status00 pH/Temperature Display Mode, orCleansing Output 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
213, 214 digits: Transmission output 2 adjustment status flag
214 213
Status00 pH/Temperature Display Mode, orCleansing Output 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
20H
20H

03H
03H

215 digit: Not used (Always 0)
010DH Zero indication
010EH Slope indication

Indicated value (Decimal point ignored.)
Indicated value (Decimal point ignored.)(*) EVT output flag:(Cleansing output) is selected in [EVT type]: The EVT output flag changes
When
to 1 (ON).
(Cleansing output) is selected:
If any item other than
When EVT output is ON: The EVT output flag changes to 1 (ON).
When EVT output is OFF: The EVT output flag changes to 0 (OFF).

21

7.4 pH Calibration, Transmission Output 1 and 2 Adjustments via Communication Command
Like a keypad operation, there are also 2 methods in pH calibration via communication command:
Automatic Calibration and Manual Calibration
7.4.1 pH Calibration(1) Automatic Calibration Mode
The 1st standard solution [pH 7 (JIS or US standard)] selected at Data item 0009H (pH 7 calibration
standard) is automatically calibrated first. Then, the 2nd standard solution [any one of pH 2, pH 4, pH
9 or pH 10 (JIS)] selected at Data item 0001H (2nd Solution) is calibrated.
pH value (based on JIS Z8802) at each temperature of pH standard solution to be calibrated 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 010FH (Transmission output 1 statuswhen calibrating) or at 014DH (Transmission output 2 status when calibrating), select it while the
pH Combined Electrode Sensor is being immersed in the solution currently calibrated.
After that, immerse the pH Combined Electrode Sensor in the 1st point standard solution (pH 7).
2 Set Data item 0038H (pH calibration mode) to 0001H.
The unit proceeds to pH calibration mode.
3 Set Data item 0039H (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 completed.
6 Set 0039H (pH calibration start) to 0002H.
The 1st point Automatic Calibration is complete, and the unit moves to the 2nd point Automatic
Calibration mode.
• The 2nd Point Automatic Calibration
1 After the electrode is rinsed, immerse the pH Combined Electrode Sensor in the 2nd standard
solution.
2 Set the Data item 0039H (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 0039H (pH calibration start) to 0004H.
Automatic calibration for the 2nd point is complete.
6 Set Data item 0038H (pH calibration mode) to 0000H.
The pH automatic calibration is complete, and the unit reverts to pH/Temperature Display
Mode, or Cleansing Output Mode.

22

(2) Manual Calibration Mode
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 010FH (Transmission output 1 status whencalibrating) or at 014DH (Transmission output 2 status when calibrating), select it while the pH
Combined Electrode Sensor is being immersed in the solution currently calibrated.
After that, immerse the pH Combined Electrode Sensor in the 1st point standard solution.
2 Set Data item 0038H (pH calibration mode) to 0001H.
3 Set Data item 0039H (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 a pH calibration value at Data item 0008H (pH calibration value).
6 Set Data item 0039H (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.
• 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 0039H (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 a pH calibration value at Data item 0008H (pH calibration value).
5 Set Data item 0039H (pH calibration start) to 0004H.
Manual calibration for the 2nd point is 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 0038H (pH calibration mode) to 0000H.
The pH manual calibration is complete, and the unit reverts to pH/Temperature Display Mode,or Cleansing Output Mode.
(3) Error Code during pH Calibration
If pH Calibration cannot be performed due to unstable pH input, temperature compensation error, etc.,
the “Error code 1 (Error, Burnout, Short-circuited, etc.)” will be returned after 20 to 210 digits are read at
Data item 0081H (Status flag 1).
To release the Error code, set Data item 0038H (pH calibration mode) to 0000H.
The unit returns to pH/Temperature Display Mode, or Cleansing Output Mode.
If Data item 0039H (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

23

7.4.2 Transmission Output 1 Adjustment
Fine adjustment of Transmission output 1 is performed.
This pH meter 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 Transmission output 1 adjustment procedure.
1

Set Data item 0126H (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 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 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 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 the Transmission output 1 adjustment, set Data item 0126H (Transmission output 1
adjustment mode) to 0000H.
The unit reverts to pH/Temperature Display Mode, or Cleansing Output Mode.

7.4.3 Transmission Output 2 Adjustment
Fine adjustment of Transmission output 2 is performed.
This pH meter 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 Transmission output 2 adjustment procedure.
1

Set Data item 014AH (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 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 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 014CH (Transmission output 2
Span adjustment 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 the Transmission output 2 adjustment, set Data item 014AH (Transmission output 2
adjustment mode) to 0000H.
The unit reverts to pH/Temperature Display Mode, or Cleansing Output 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-PH, set the program so that the requisite minimum piecesof data such as Data item 0080H (pH), Data item 0090H (Temperature), Data item 0081H (Status flag1), 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 the front keypad operation
If any set value is changed by keypad operation, the AER-102-PH 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]
has been set to 1 (Yes), then read all set values.
2

Clear the [0081H (Status flag 1) 215: Change in key operation], by setting [Data item 007FH (Key
operation change flag clearing)] to [Clear change flag (0001H)].
If [007FH (Key operation change flag clearing)] is set to [Clear change flag (0001H)] 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) 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]
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), 0090H (Temperature), 0081H (Status flag 1), 0091H (Status flag 2), then return to 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
• If EVT1, EVT2, EVT3 or EVT4 type is changed at Data items 0003H (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 output status of EVT1, EVT2, EVT3 or EVT4 will also be initialized.
First, send the EVT1, EVT2, EVT3, EVT4 type, then send the EVT1, EVT2, EVT3, EVT4 value set at
Data items 0004H (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

Data format

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 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)
Communication
ShinkoMODBUS ASCIIMODBUS RTU
ProtocolProtocolStart bit
1
1
1
7 (8)
Data bit
78
Selectable
Even, (No parity
No parity (Even,
Parity
Even
Odd)
Odd)
Selectable
Selectable
1 (2)
1 (2)
Stop bit1
Selectable
Selectable26

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

Although communication is occurring, theresponse is negative
acknowledgement.

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

Solution
Make sure that the communication
connector is securely connected.
Check the communication cableand connector.
Check the communication cableand the 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.
Check the slave status.

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