AER-101-TU (C5)COMMUNICATION INSTRUCTION MANUAL

No. AER1CTUE3 2019.07
This manual contains instructions for communication functions of the AER-101-TU.
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-101-TU
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-485No. 0(Fig. 1-2)
1

AER-101-TU
No. 1

No. 302. Wiring
The following shows a connection example using Communication Converter IF-400 (sold separately)and USB communication cable CMC-001-1.
Connection between IF-400 and AER-101-TU
Use a communication cable CDM (sold separately).
Connect the modular jack and (Y-type terminal 4) of IF-400 to ( 13 YA) of AER-101-TU.
Connect (Y-type terminal 3) of IF-400 to ( 14 YB) of AER-101-TU.
Connect (Y-type terminals 1 and 6) of IF-400 to ( 15 SG) of AER-101-TU.
Connection between CMC-001-1 and AER-101-TU
Use a USB communication cable CMC-001-1 (sold separately).
Connect USB port of the host computer and [Y-type terminal YA (-)] to ( 13 YA) of AER-101-TU.
Connect [Y-type terminal YB (+)] of CMC-001-1 to ( 14 YB) of AER-101-TU.
Connect (Y-type terminals COM) to ( 15 SG) of AER-101-TU.
Connection between AER-101-TU and AER-101-TU
Using a shield wire, connect terminals ( 13 YA) to ( 13 YA), ( 14 YB) to ( 14 YB), ( 15 SG) to ( 15 SG)
respectively.
• When using communication converter IF-400
Communication converter
IF-400 (sold separately)
RS232C
RS-485

Host computer

AER-101-TU (Max. 31 units)
4
3
1
6

ս YA
վ YB
տ SG

No. 0

ձ GND

Shield wire
Shield wire
ս YA
վ YB
տ SG

No. 1

ձ GND

Shield wire
ս YA
վ YB
տ SG
ձ GND

No. 30(Fig. 2-1)
• When using USB communication cable CMC-001-1
Host computer

AER-101-TU (Max. 31 units)
YA(-)
YB(+)
COM

ս YA
վ YB
տ SG

No. 0

ձ GND

USB communication cable
CMC-001-1 (sold separately)USB
RS-485

ս YA
վ YB
տ SG

No. 1

ձ GND

ս YA
վ YB
տ SG
ձ GND

(Fig. 2-2)
2

No. 30Shield Wire
Connect only one end of the shield to the FG or GND terminal to avoid a ground loop. If both ends of theshield wire are connected to the FG or GND terminal, the circuit will be closed, resulting in a ground loop.
This may cause noise. Be sure to ground the FG or GND terminal.
Recommended cable: OTSC-VB 2PX0.5SQ (made by Onamba Co., Ltd.) or equivalent (use a twisted paircable.)
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-101-TU has built-in pull-up andpull-down resistors.

3. Setting Communication Parameters
Communication parameters can be set in the Communication Group.
To enter the Communication Group, follow the procedure below.
(1)

Press thekey 4 times in Turbidity/SS Display Mode.

(2)

Press thekey. The unit enters Communication Group, and “Communication protocol”

will appear.
(3) Make a selection using theCharacteror

key, and register the selection 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 impossible.)• Setting range: 0 to 95
Communication speed
9600 bps• Selects a communication speed equal to that of the host computer.
: 9600 bps•: 19200 bps: 38400 bps(4) Press theData bit/Parity• Selects data bit and parity.
: 8 bits/No parity•: 7 bits/No parity: 8 bits/Even: 7 bits/Even: 8 bits/Odd: 7 bits/Odd

7 bits/Even

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

1 bit

key. The unit will revert to Turbidity/SS Display Mode.
34. Communication ProcedureCommunication starts with command transmission from the host computer (hereafter Master) andends with the response of the AER-101-TU (hereafter Slave).
MasterCommand
Data

Slave

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

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

4

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

Delimiter(03H)
1

Checksum2

Header:Delimiter(03H)
1

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

Data item:

Data:

Checksum:
Delimiter:
Error code:

Classification of the command object.
Composed of 4-digit hexadecimal numbers, using ASCII.
[Refer to “7. Communication Command Table” (pp.11 to 16).]
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 16).]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.
Error CodeContents
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 Turbidity/SS sensor calibrationmode, or Zero/Span output signal adjustment mode)
5 (35H)During setting mode by keypad operation

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

P

0

0

0

8

0

0

6

4

D

E

ETX

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

Checksum1101[2’s complement]

1101

1101
1
1110

[Hexadecimal]

D

E[ASCII code]

44H

45H

[1’s complement]+(Fig. 5.3-1)
6

Checksum6. MODBUS Protocol
6.1 Transmission Mode
There are 2 transmission modes (ASCII and RTU) in MODBUS protocol.
ASCII Mode
Hexadecimal (0 to 9, A to F), which is divided into high order (4-bit) and low order (4-bit) out of
8-bit binary data in command is transmitted as ASCII characters.
Data format
Start bit: 1 bit
Data bit: 7 bits (8 bits) (Selectable)
Parity: Even (No parity, Odd) (Selectable)
Stop bit: 1 bit (2 bits) (Selectable)
Error detection: LRC (Longitudinal Redundancy Check)
RTU Mode
8-bit binary data in command is transmitted as it is.
Data format
Start bit: 1 bit
Data bit: 8 bits
Parity: No parity (Even, Odd) (Selectable)
Stop bit: 1 bit (2 bits) (Selectable)
Error detection: CRC-16 (Cyclic Redundancy Check)6.2 Data Communication Interval
ASCII Mode
Max.1 second of interval between characters
RTU Mode
Communication speed 9600 bps, 19200 bps:
To transmit continuously, an interval between characters which consist of one message, must bewithin 1.5-character transmission times.
Communication speed 38400 bps:
To transmit continuously, an interval between characters which consist of one message, must bewithin 750 s.
If an interval lasts longer than 1.5-character transmission times or 750 s, the AER-101-TU 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
Slave
FunctionError check3.5 idle
Data
CRC-16characterscharacters addresscode
6.3.1 Slave Address
Slave address is an individual instrument number on the slave side, and is set within the range 0 to 95(00H to 5FH).
The master identifies slaves by the slave address of the requested message.
The slave informs the master which slave is responding to the master by placing its own address in
the response message.
Slave address 00H (Broadcast address) can identify all the slaves connected. However, slaves do notrespond.
7

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

6
7

8
9

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

6.4 Message Example
ASCII Mode
Numerals written below the command represent the number of characters.
Reading [Slave address 1, Data item 0080H (Turbidity/SS input 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

1

• Response message from the slave in normal status [When 10.0 (Formazin) (0064H)]
The response byte count means the byte count of data which have been read. It is fixedas (30H 32H).
Response
Error check Delimiter
Data
Function
Header Slave
byte countLRC
address[0064H]
code[02H](30H 30H 36H 34H) (39H 36H) (0DH 0AH)
(3AH) (30H 31H) (30H 33H)
(30H 32H)
1
2
2
2
4
2
2
• Response message from the slave in exception (error) status (When a data item is incorrect)
The function code MSB is set to 1 for the response message in exception (error) status. (83H is returned)
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 (EVT ON delay time)]• A request message from the master [When EVT ON delay time is set to 100 seconds (0064H)]
Header Slave
Function
Data item
Data
Error check Delimiter
addresscode[0008H][0064H]
LRC(3AH) (30H 31H) (30H 36H) (30H 30H 30H 38H) (30H 30H 36H 34H) (38H 44H) (0DH 0AH)
1
2
2
4
4
2
2

2

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

9

RTU Mode
1

Reading [Slave address 1, Data item 0080H (Turbidity/SS input 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
12
2
2

3.5 idle
characters• Response message from the slave in normal status [When 10.0 (Formazin) (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
3.5 idle
addresscodebyte countCRC-16characterscharacters
(01H)
(03H)
(02H)
(0064H)(B9AFH)1
1
1
2
2• Response message from the slave in exception (error) status (When a data item is incorrect)
The function code MSB is set to 1 for the response message in exception (error) status (83H isreturned.).
The exception code (02H: Non-existent data address) is returned (error).
Function Exception code
Error checkSlave
3.5 idle
3.5 idle
addresscode
CRC-16characterscharacters
(01H)
(83H)
(02H)
(C0F1H)1
1
1
2
Setting [Slave address 1, Data item 0008H (EVT ON delay time)]• A request message from the master [When EVT ON delay time is set to 100 seconds (0064H)]
Slave
Function
Data item
Data
Error check3.5 idle
3.5 idle
addresscode
CRC-16characterscharacters
(01H)
(06H)
(0008H)(0064H)(D9E3H)
1
1
2
2
2

2

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

Data(0064H)
2

Error check
CRC-16(D9E3H)2

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

10

7. Communication Command Table
7.1 Note on Setting/Reading Command• The data (set value, decimal) is converted to hexadecimal numbers.
A negative number is represented in 2's complement.
• When connecting multiple slaves, the address (instrument number) must not be duplicated.
• Data items 0200H to 0209H (User save area 1 to 10) can be read or set in 1 word units.
Effective range of data is -32768 to 32767 (8000H to 7FFFH).
• MODBUS protocol uses Holding Register addresses. The Holding Register addresses are created asfollows. A Shinko command data item is converted to decimal number, and the offset of 40001 is added.
The result is the Holding Register address.
Using Data item 0008H (EVT ON delay time) as an example: Data item in the sending message is 0008H,
however, MODBUS protocol Holding Register address is 40009 (8 + 40001).
• Even if options are not ordered, setting or reading via software communication will be possible.
(1) Setting Command• Up to 1,000,000 (one million) entries can be stored in non-volatile IC memory.
If the number of settings exceeds the limit, the data will not be saved. So, do not change the set values
frequently via communication. (If a value set via software communication is the same as the value 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 isselected, all set values – except Measurement range, Measurement unit, Span setting, Zero and Span
output signals, Turbidity/SS sensor calibration, Transmission output Zero and Span adjustments – canbe 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 the setting item ‘EVT type’. If it is changed, it will affect 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 EVT type is changed at Data item 0005H (EVT type), EVT value will default to “0”.
EVT output status 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. (p.3)• 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 isused for a response.

117.2 Setting/Reading Command
Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0004H Measurement range
Data
0000H
0001H
0002H
0003H
0004H

Measurement Range
0.0 to 100.0 (Formazin)
0 to 500 (Formazin)
0 to 3000 (Formazin)
0 to 1000 mg/L (Kaolin)
0 to 5000 mg/L (Kaolin)

50H/20H

06H/03H 0005H EVT type

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

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

06H/03H 0006H EVT value
06H/03H 0007H EVT ON side
06H/03H 0008H EVT ON delay time
06H/03H 0009H EVT OFF delay time
06H/03H 000AH Turbidity/SS input filter time
constant
Turbidity/SS
inputs06H/03H 000CH
for moving average
06H/03H 000DH Calibration wait time
06H/03H 0010H EVT proportional band
06H/03H 0011H EVT reset
06H/03H 0012H EVT proportional cycle
06H/03H 0030H Set value lock50H/20H

06H/03H 0031H

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

06H/03H 0032H
06H/03H 0033H
06H/03H 0035H

50H/20H
50H

06H/03H 0037H
06H
0040H

50H/20H

50H
50H

50H/20H

06H
06H

0041H
0042H

06H/03H 0043H

Data

Model
Turbidity sensor TC-100
Turbidity sensor TC-500
Turbidity sensor TC-3000
SS sensor TCS-1000(E)SS sensor TS-MxS-A

0000H: No action
0001H: Turbidity/SS input low limit action
0002H: Turbidity/SS input high limit action
0003H: Error output
0004H: Fail output
0005H: Turbidity/SS input High/Low limits
independent action
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
Set value (Decimal point ignored.)
Set value
Set value

Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
0000H: Unlock
0001H: Lock 1
0002H: Lock 2
0003H: Lock 3
Transmission output type
0000H: Turbidity/SS transmission
0001H: EVT MV transmission
Transmission output high limit Set value (Decimal point ignored.)Transmission output low limit Set value (Decimal point ignored.)
Setting Display indication
0000H: No indication
0001H: EVT value
Backlight time
Set value
Turbidity/SS sensor
0000H: Turbidity/SS Display Modecalibration mode
0001H: Turbidity/SS sensor calibration
mode
Calibration signal output
0001H: Calibration signal output
Zero/Span output signal
0000H: Turbidity/SS Display Modeadjustment mode
0001H: Zero output signal adjustment
mode
0002H: Span output signal adjustment
mode
Zero output signal
Set value (Decimal point ignored.)adjustment value
12

Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0044H Span output signal
adjustment value
50H/20H 06H/03H 0045H EVT output when input
errors occur
50H/20H 06H/03H 0048H Output ON time when EVT
output ON
50H/20H 06H/03H 0049H Output OFF time when EVT
output ON
50H/20H 06H/03H 0063H Backlight selection

50H/20H

06H/03H 0064H Turbidity/SS color

50H/20H
50H/20H

06H/03H 0065H Turbidity/SS color range
06H/03H 0066H Bar graph indication

50H/20H

50H/20H

06H/03H 0067H Turbidity/SS color referencevalue
06H/03H 0068H Turbidity/SS input sensor
correction
06H/03H 0070H EVT output high limit
06H/03H 0071H EVT output low limit
06H
007FH Key operation change flagclearing
06H/03H 0100H EVT hysteresis type

50H/20H
50H/20H

06H/03H 0104H EVT OFF side
06H/03H 0108H Measurement unit

50H/20H
50H/20H

06H/03H 0109H Span setting
06H/03H 010FH Transmission output statuswhen calibrating

50H/20H

06H/03H 0110H Transmission output value
HOLD when calibrating

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

13

Data
Set value (Decimal point ignored.)
0000H: Enabled
0001H: Disabled
Set value
Set value
0000H: All are backlit.
0001H: Turbidity/SS Display is backlit.
0002H: Setting Display is backlit.
0003H: Action indicator is backlit.
0004H: Turbidity/SS Display + Setting
Display are backlit.
0005H: Turbidity/SS Display + Action
indicator are backlit.
0006H: Setting Display + Action indicatorare backlit.
0000H: Green
0001H: Red
0002H: Orange
0003H: Turbidity/SS color changes
continuously.
Set value (Decimal point ignored.)
0000H: No indication
0001H: Transmission output
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
0001H: Clear change flag.
0000H: Medium Value
0001H: Reference Value
Set value (Decimal point ignored.)
0000H: Formazin
0001H: Kaolin (mg/L)
Set value (Decimal point ignored.)
0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value
Set value (Decimal point ignored.)Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0111H Transmission output statuswhen adjusting output signal
50H/20H

50H

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

Data
0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value
Set value (Decimal point ignored.)

06H/03H 0112H Transmission output value
HOLD when adjusting output
signal06H 0126H Transmission output
0000H: Turbidity/SS Display Mode
0001H: Transmission output Zeroadjustment mode
adjustment mode
0002H: Transmission output Spanadjustment mode
06H/03H 0127H Transmission output Zero
Set value (Decimal point ignored.)adjustment value
06H/03H 0128H Transmission output Span
Set value (Decimal point ignored.)adjustment value
06H/03H 0139H EVT High/Low limits
Set value (Decimal point ignored.)
independent lower side value
06H/03H 013DH EVT High/Low limits
Set value (Decimal point ignored.)
independent upper side value
06H/03H 0141H EVT hysteresis
Set value (Decimal point ignored.)-32768 to 32767 (8000H to 7FFFH)
06H/03H 0200H User save area 1-32768 to 32767 (8000H to 7FFFH)
06H/03H 0201H User save area 2-32768 to 32767 (8000H to 7FFFH)
06H/03H 0202H User save area 3-32768 to 32767 (8000H to 7FFFH)
06H/03H 0203H User save area 4
User
save
area
5
-32768 to 32767 (8000H to 7FFFH)
06H/03H 0204H-32768 to 32767 (8000H to 7FFFH)
06H/03H 0205H User save area 6-32768 to 32767 (8000H to 7FFFH)
06H/03H 0206H User save area 7-32768 to 32767 (8000H to 7FFFH)
06H/03H 0207H User save area 8
User
save
area
9
-32768 to 32767 (8000H to 7FFFH)
06H/03H 0208H-32768 to 32767 (8000H to 7FFFH)
06H/03H 0209H User save area 10147.3 Read Only Command
Shinko MODBUS
Command Function
Data Item
Type
Code
20H
03H
0080H Turbidity/SS input value
20H

03H

Data
Turbidity/SS input value(Decimal point ignored.)

0081H Status flag 10000 0000 0000 0000
to
20
215
0
2 digit: Not used (Always 0)
21 digit: When Turbidity/SS input value has exceeded the value
equivalent to 20.5 mA DC.
0: Normal
1: Error
22 digit: When Turbidity/SS input value has dropped below the value
equivalent to 3.5 mA DC.
0: Normal
1: Error
23 digit: When Analog signal (+, White) (–, Black) cable of Turbidity/SS
sensor is disconnected or short-circuited.
0: Normal
1: Error
24 digit: When receiving Self-check output from Turbidity/SS sensor
0: Normal
1: Error
25 digit: Not used (Always 0)
0: OFF
1: ON
26 digit: EVT output flag
1: ON
27 digit: Self-check output flag 0: OFF
28 to 29 digits: Not used (Always 0)
210 digit: Unit status flag 0: Turbidity/SS Display Mode
1: Setting mode
211 digit: Turbidity/SS sensor calibration status flag
0: Turbidity/SS Display Mode
1: Turbidity/SS sensor calibration mode
212, 213 digits: Zero/Span output signal adjustment status flag
213 212
Status00 Turbidity/SS Display Mode0
1 Zero output signal adjustment mode
10 Span output signal adjustment mode
214 digit: EVT output
0: OFF 1: ON
1: Yes215 digit: Change in key operation 0: No

15

Shinko MODBUS
Command Function
Data Item
Data
Type
Code
20H
03H
0091H Status flag 20000 0000 0000 0000
to
20
215
0 digit: During Span output signal adjustment, if Turbidity/SS input value
2
has exceeded the value equivalent to 20.5 mA DC.
0: Normal
1: Error
21 digit: During Zero output signal adjustment, if Turbidity/SS input value
has dropped below the value equivalent to 3.5 mA DC.
0: Normal
1: Error
22 digit: During calibration, if the output signal from Turbidity/SS sensor
has not reached 2 mA DC.
0: Normal
1: Error
23 digit: After calibration is complete, if the output signal from theTurbidity/SS sensor has not returned to 4 mA DC.
0: Normal
1: Error
24 digit: Turbidity/SS sensor calibration end status flag
0: During Turbidity/SS sensor calibration or Turbidity/SS Display Mode
1: Turbidity/SS sensor calibration is complete
25, 26 digits: Transmission output adjustment status flag
26
25
Status00Turbidity/SS Display Mode01
During Transmission output Zeroadjustment in Transmission output
adjustment mode
10
During Transmission output Spanadjustment in Transmission output
adjustment mode
27 to 215 digits: Not used (Always 0)

16

7.4 Calibration via Communication Command
Turbidity/SS Sensor Calibration mode, Zero and Span output signal adjustment modes,
Transmission Output Adjustment mode are described below.
7.4.1 Turbidity/SS Sensor Calibration Mode
The following outlines the procedure for Turbidity/SS Sensor calibration.
Step

Operation

1

Clean the body of Turbidity/SS sensor, particularly its lens(es).

2

Immerse the Turbidity/SS sensor in the distilled water or ion-exchanged water.

3

Set Data item 0040H (Turbidity/SS sensor calibration mode) to 0001H (Turbidity/SS sensor
calibration mode).
The unit will proceed to Turbidity/SS Sensor calibration mode. (*)
During the time set in [Calibration wait time], if 211 digit (Turbidity/SS sensor calibration statusflag) is read at Data item 0081H (Status flag 1), 1 (Turbidity/SS sensor calibration mode) will be
returned.
Adjust the Turbidity/SS sensor to the ambient water temperature during the time set in [Calibration wait time].

4

After the time set in [Calibration wait time] has elapsed, calibration automatically starts.
During calibration, calibration signal output is turned ON for 3 seconds.
When the calibration signal output switches from OFF to ON, the Turbidity/SS sensor will output approx, 2 mA
DC of analog signal.

5

After the calibration is complete, the calibration signal output is turned OFF.
If 24 digit (Turbidity/SS sensor calibration end status flag) is read at Data item 0091H (Status flag2), 1 (Turbidity/SS sensor calibration is complete) will be returned.
When the calibration signal output switches from ON to OFF, the Turbidity/SS sensor returns to 4 mA DC ofanalog signal.

6

Set Data item 0040H (Turbidity/SS sensor calibration mode) to 0000H (Turbidity/SS DisplayMode). The unit will return to Turbidity/SS Display Mode.
If 24 digit (Turbidity/SS sensor calibration end status flag) is read at Data item 0091H (Status flag2), 0 (During Turbidity/SS sensor calibration or Turbidity/SS Display Mode) will be returned.
If 211 digit (Turbidity/SS sensor calibration status flag) is read at Data item 0081H (Status flag 1),
0 (Turbidity/SS Display Mode) will be returned.

(*) If Calibration wait time is set to 0 (zero) minutes, adjust the Turbidity/SS sensor to the ambient water temperature
for approx. 5 minutes, then set Data item 0040H (Turbidity/SS Sensor calibration mode) to 0001H (Turbidity/SS
sensor calibration mode).
After the unit enters Turbidity/SS Sensor calibration mode, set Data item 0041H (Calibration signal output) to0001H (Calibration signal output), then refer to Step 4 and all following steps.

Error Codes when Calibrating Turbidity/SS Sensor• During calibration, if the output signal from the Turbidity/SS sensor does not reach approx. 2 mA DC (*),
and if 22 digit (During calibration, if the output signal from Turbidity/SS sensor has not reached 2 mA DC.)is read at Data item 0091H (Status flag 2), 1 (Error) will be returned.
(*) Before the calibration signal output switches from ON to OFF, and if the output signal from the Turbidity/SS sensor is
between 1 and 3 mA DC, it is regarded as normal. If the output signal is outside of this range, it is regarded as an error.
• After calibration is completed, if the output signal from the Turbidity/SS sensor does not return to 4 mA

DC (*), and if 23 digit (After calibration is complete, if the output signal from the Turbidity/SS sensor has
not returned to 4 mA DC.) is read at Data item 0091H (Status flag 2), 1 (Error) will be returned.
(*) Approximately 5 seconds after the calibration signal output switches from ON to OFF, and if the output signal from theTurbidity/SS sensor is between 3.5 and 4.5 mA DC, it is regarded as normal. If the output signal is outside of this range,
it is regarded as an error.

To release the error code, set Data item 0040H (Turbidity/SS sensor calibration mode) to 0000H(Turbidity/SS Display Mode).
The unit returns to Turbidity/SS Display Mode.

17

Error codes in Turbidity/SS Display Mode are shown below.
• In Turbidity/SS Display Mode, if Data item 0041H (Calibration signal output) is set to 0001H (Calibration
signal output), Shinko Error code 4 (34H, Shinko protocol) or MODBUS Exception code 17 (11H,
MODBUS protocol) will be returned.
• If 0001H (Lock 1), 0002H (Lock 2) or 0003H (Lock 3) is selected at Data item 0030H (Set value lock),and if Data item 0040H (Turbidity/SS Sensor calibration mode) is set to 0001H (Turbidity/SS sensor
calibration mode), or if Data item 0041H (Calibration signal output) is set to 0001H (Calibration signal
output), Shinko Error code 4 (34H, Shinko protocol) or MODBUS Exception code 17 (11H, MODBUS
protocol) will be returned.
7.4.2 Zero and Span Output Signal Adjustments

Caution• Be sure to perform turbidity/SS sensor calibration before adjusting Zero and Span output signals.
• Be sure to adjust Span output signal after Zero output signal is adjusted.
Adjust Zero and Span output signals following the procedure below.
Step
1

2
3

4
5

6

7

8

9

10

Operation
Clean the body of Turbidity/SS sensor, particularly its lens(es).
Immerse the Turbidity/SS sensor in the distilled water or ion-exchanged water.
Set Data item 0042H (Zero/Span output signal adjustment mode) to 0001H (Zero output signal
adjustment mode).
The unit will proceed to Zero output signal adjustment mode.
During Zero output signal adjustment, if 213, 212 digits (Zero/Span output signal adjustment
status flag) are read at Data item 0081H, [01: Zero output signal adjustment mode] will be
returned.
After the Turbidity/SS sensor has adjusted to the ambient water temperature for approx. 5
minutes, check Turbidity/SS input value at Data item 0080H (Turbidity/SS input value).
If Turbidity/SS input value is not 0 (zero), set the Zero output signal adjustment value at Data
item 0043H (Zero output signal adjustment value).
Setting range of Zero output signal adjustment value: 5% of measurement span
Check Turbidity/SS input value at Data item 0080H (Turbidity/SS input value) again.
If Turbidity/SS input value is not 0 (zero), return to Step 5 .
If Turbidity/SS input value is 0 (zero), the Zero output signal adjustment will be completed.
Set Data item 0042H (Zero/Span output signal adjustment mode) to 0002H (Span output
signal adjustment mode).
The unit will proceed to Span output signal adjustment mode.
During Span output signal adjustment, if 213, 212 digits (Zero/Span output signal adjustment
status flag) are read at Data item 0081H, [10: Span output signal adjustment mode] will be
returned.
Block the light beam between the lenses of the sensor for more than 30 seconds.
[Be careful not to touch the lens(es).]
Check Turbidity/SS input value at Data item 0080H (Turbidity/SS input value).
If Turbidity/SS input value is not the Measurement range high limit value, set the Span output
signal adjustment value at Data item 0044H (Span output signal adjustment value).
Setting range of Span output signal adjustment value: 5% of measurement span
Check Turbidity/SS input value at Data item 0080H (Turbidity/SS input value) again.
If Turbidity/SS input value is not the Measurement range high limit value, return to Step 9 .
If Turbidity/SS input value is the Measurement range high limit value, Span output signal
adjustment will be completed.

18

11

Set Data item 0042H (Zero/Span output signal adjustment mode) to 0000H (Turbidity/SS
Display mode).
The unit will return to Turbidity/SS Display Mode.
If 213, 212 digits (Zero/Span output signal adjustment status flag) are read at Data item 0081H(Status flag 1), [00: Turbidity/SS Display Mode] will be returned.

Error codes during Zero and Span output signal adjustments are shown below.
• During Zero output signal adjustment, when turbidity/SS input value has dropped below the value
equivalent to 3.5 mA DC, and if 21 digit (During Zero output signal adjustment, if Turbidity/SS input value
has dropped below the value equivalent to 3.5 mA DC.) is read at Data item 0091H (Status flag 2), 1(Error) will be returned.
To release the error code, set Data item 0042H (Zero/Span output signal adjustment mode) to 0000H(Turbidity/SS Display Mode) or 0002H (Span output signal adjustment mode).
The unit will return to Turbidity/SS Display Mode.
• During Span output signal adjustment, when turbidity/SS input value has exceeded the value equivalent
to 20.5 mA DC, and if 20 digit (During Span output signal adjustment, if Turbidity/SS input value has
exceeded the value equivalent to 20.5 mA DC.) is read at Data item 0091H (Status flag 2), 1 (Error) will be
returned.
To release the error code, set Data item 0042H (Zero/Span output signal adjustment mode) to 0000H(Turbidity/SS Display Mode).
The unit will return to Turbidity/SS Display Mode.
Error codes in Turbidity/SS Display Mode are shown below.
• In Turbidity/SS Display Mode, if Zero or Span output signal adjustment value is set at Data items 0043H(Zero output signal adjustment value) or 0044H (Span output signal adjustment value), Shinko Error code 4(34H, Shinko protocol) or MODBUS Exception code 17 (11H, MODBUS protocol) will be returned.
• If 0001H (Lock 1), 0002H (Lock 2) or 0003H (Lock 3) is selected at Data item 0030H (Set value lock),and if Zero or Span output signal adjustment value is set at Data item 0043H (Zero output signal
adjustment value) or 0044H (Span output signal adjustment value), Shinko Error code 4 (34H, Shinko
protocol) or MODBUS Exception code 17 (11H, MODBUS protocol) will be returned.

197.4.3 Transmission Output Adjustment
Fine adjustment of Transmission output is performed.
The AER-101-TU 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 Zero adjustment and Span adjustment.
Step
ձ

ղ

ճ

մ

յ
ն

Operation
Set Data item 0126H (Transmission output adjustment mode) to 0001H (Transmission output
Zero adjustment mode).
The unit will proceed to Transmission output Zero Adjustment mode.
If 26, 25 digits (Transmission output adjustment status flag) are read at Data item 0091H(Status flag 2), [01: During Transmission output Zero adjustment in Transmission output
adjustment mode] will be returned.
Set the Transmission output Zero adjustment value at Data item 0127H (Transmission output
Zero adjustment value), while checking the value indicated on the connected equipment(recorders, etc.)
Setting range: 5.00% of Transmission output span
Set Data item 0126H (Transmission output adjustment mode) to 0002H (Transmission output
Span adjustment mode).
The unit will proceed to Transmission output Span Adjustment mode.
If 26, 25 digits (Transmission output adjustment status flag) are read at Data item 0091H(Status flag 2), [10: During Transmission output Span adjustment in Transmission output
adjustment mode] will be returned.
Set the Transmission output Span adjustment value at Data item 0128H (Transmission output
Span adjustment value), while checking the value indicated on the connected equipment(recorders, etc.)
Setting range: 5.00% of Transmission output span
Repeat steps ձ to մ if necessary.
To finish Transmission output adjustment, set Data item 0126H (Transmission output
adjustment mode) to 0000H (Turbidity/SS Display Mode).
The unit reverts to the Turbidity/SS Display Mode.

20

7.5 Notes on Programming Monitoring Software(1) How to speed up the scan time
When monitoring multiple units of AER-101-TU, set the program so that the requisite minimum pieces ofdata such as Data item 0080H (Turbidity/SS input value), 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.
(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-101-TU 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.
Reading method 1
1 On the monitoring software side, check that [0081H (Status flag 1) 215: Change in key operation] hasbeen set to 1 (Yes), then read all set values.
2

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

3

Read all set values again after acknowledgement is returned.

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

Set the program depending on the acknowledgement or negative acknowledgement as follows.
When acknowledgement is returned:
Consider it as settings completed, and read all set values.
When Error code 5 (35H, Shinko protocol) or Exception code 18 (12H, MODBUS protocol) is returned
as a negative acknowledgement:
Consider it as still in setting mode, and read the requisite minimum pieces of data such as 0080H(Turbidity/SS input value), 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.
(3) Note when sending all set values at one time
• When changing EVT type at Data item 0005H (EVT type), EVT value will default to 0 (zero).
First, send the EVT type, then send the EVT value at Data item 0006H (EVT value).

21

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 Turbidity/SS input value 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 bit1
1
1
Data bit
77 (8)8Selectable
ParityEven
Even
No parity(No parity, Odd)
(Even, Odd)
Selectable
Selectable
Stop bit
1
1 (2)
1 (2)
Selectable
Selectable22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, the response
is a negative acknowledgement.

Possible Cause
Communication cable is notsecurely connected, or is
disconnected/defective.
Incorrect wiring of thecommunication 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
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.
A non-existent command code has
been sent.
The setting command data
exceeds the setting range of theslave.
The AER-101-TUcannot be set
during calibration or adjustmentmode (during Turbidity/SS sensor
calibration mode, Zero/Span output
signal adjustment mode).
The AER-101-TU is in 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 Turbidity/SS
Display Mode.

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

23

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