Autonics CT Series User manual

Programmable Counter/Timer
CT Series
CT Series
USER MANUAL
For COMMUNICATION

ii © Copyright Reserved Autonics Co., Ltd.

Preface
© Copyright Reserved Autonics Co., Ltd. iii
Preface
Thank you for purchasing an Autonics product.
Please familiarize yourself with the information contained in the Safety Precautions section
before using this product.
This user manual contains information about the product and its proper use, and should be kept
in a place where it will be easy to access.

User Manual Guide
iv © Copyright Reserved Autonics Co., Ltd.
User Manual Guide
Please familiarize yourself with the information in this manual before using the product.
This manual provides detailed information on the product's features. It does not offer any
guarantee concerning matters beyond the scope of this manual.
This manual may not be edited or reproduced in either part or whole without permission.
A user manual is not provided as part of the product package.
Visit our web site (www.autonics.com) to download a copy.
The manual's content may vary depending on changes to the product's software and other
unforeseen developments within Autonics, and is subject to change without prior notice.
Upgrade notice is provided through out homepage.
We contrived to describe this manual more easily and correctly. However, if there are any
corrections or questions, please notify us these on our homepage.

Communication Protocol
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Communication Protocol
CT Series is accepted to Modbus RTU Protocol.
Users should be aware that it does not support a broadcast command.

User Manual Symbols
vi © Copyright Reserved Autonics Co., Ltd.
User Manual Symbols
Symbol Description
Supplementary information for a particular feature.
Failure to follow instructions can result in serious injury or death.
Failure to follow instructions can lead to a minor injury or product damage.
An example of the concerned feature's use.
※1 Annotation mark.

Safety Precautions
© Copyright Reserved Autonics Co., Ltd. vii
Safety Precautions
Following these safety precautions will ensure the safe and proper use of the product and
help prevent accidents, as well as minimizing possible hazards.
Safety precautions are categorized as Warnings and Cautions, as defined below:
Warning Failure to follow the instructions may lead to a serious injury
or accident.
Caution Failure to follow the instructions may lead to a minor injury
or accident.
Fail-safe device must be installed when using the unit with machinery that may cause
serious injury or substantial economic loss. (e.g. nuclear power control, medical equipment,
ships, vehicles, railways, aircraft, combustion apparatus, safety equipment, crime/disaster
prevention devices, etc.)
Failure to follow this instruction may result in personal injury, fire, or economic loss.
The unit must be installed on a device panel before use.
Failure to follow this instruction may result in electric shock.
Do not connect, repair, or inspect the unit while connected to a power source.
Failure to follow this instruction may result in electric shock.
Do not disassemble or modify the unit. Please contact us if necessary.
Failure to follow this instruction may result in electric shock or fire.
Do not use the unit outdoors.
Failure to follow this instruction may result in shortening the life cycle of the unit, or electric
shock.
When connecting the power input and relay output cables, use AWG20 (0.50mm2) cables
and make sure to tighten the terminal screw bolt above 0.74N·m to 0.90N·m.
Failure to follow this instruction may result in fire due to contact failure.
Use the unit within the rated specifications.
Failure to follow this instruction may result in shortening the life cycle of the unit, or fire.
Do not use loads beyond the rated switching capacity of the relay contact.
Failure to follow this instruction may result in insulation failure, contact melt, contact failure,
relay broken, or fire.
Do not use water or oil-based detergent when cleaning the unit. Use dry cloth to clean the
unit.
Failure to follow this instruction may result in electric shock or fire.
Do not use the unit where flammable or explosive gas, humidity, direct sunlight, radiant heat,
vibration, or impact may be present.
Failure to follow this instruction may result in fire or explosion.

Safety Precautions
viii © Copyright Reserved Autonics Co., Ltd.
Keep dust and wire residue from flowing into the unit.
Failure to follow this instruction may result in fire or product damage.
The specifications of communication manual are subject to change and some models
may be discontinued without notice.

Table of Contents
© Copyright Reserved Autonics Co., Ltd. ix
Table of Contents
Preface................................................................................................................................. ⅲ
User Manual Guide ................................................................................................................ⅳ
Communication Protocol........................................................................................................ⅴ
User Manual Symbols ............................................................................................................ⅵ
Safety Precautions .................................................................................................................ⅶ
Table of Contents....................................................................................................................ⅸ
1Modbus RTU Protocol ..............................................................................11
1.1 Read coil status(Func 01–01H)..................................................................................... 11
1.2 Read input status(Func 02–02H) ..................................................................................12
1.3 Read holding registers(Func 03–03H) ..........................................................................13
1.4 Read input registers(Func 04–04H)..............................................................................14
1.5 Force single coil(Func 05–05H) ....................................................................................15
1.6Preset single registers(Func 06–06H)...........................................................................16
1.7Preset multiple registers(Func 16–10H)........................................................................17
1.8Exception response-error code.....................................................................................18
2Modbus Mapping Table ............................................................................19
2.1 Reset/Output .................................................................................................................19
2.2 Terminal input status......................................................................................................19
2.3 Product Information.......................................................................................................20
2.4Monitoring data..............................................................................................................21
2.5Preset value setting group............................................................................................. 22
2.6Function setting mode................................................................................................... 23
2.6.1 Counter group ...........................................................................................23
2.6.2 Timer group ...............................................................................................24
2.6.3 Communication group ..............................................................................25

Table of Contents
x © Copyright Reserved Autonics Co., Ltd.

1 Modbus RTU Protocol
© Copyright Reserved Autonics Co., Ltd. 11
1Modbus RTU Protocol
1.1 Read coil status (Func 01–01H)
Read output (OX reference, Coil) ON/OFF status in the slave device.
(1) Query (Master)
Slave address Function
Starting address
No. of points
Error check (CRC16)
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
(2) Response (Slave)
Slave address Function Byte count Data Data Data
Error check (CRC16)
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
If read the 10 output status (ON: 1, OFF: 0) within coil 000001 (0000 H) to 000010 (0009 H) on
Slave (Address 17) from Master.
Query (Master)
Slave address Function
Starting address
No. of points
Error check (CRC16)
High
Low
High
Low
Low
High
11 H 01 H 00 H 00 H 00 H 0A H ## H ## H
If the values range from coil 000008 (0007 H) to 000001 (0000 H) on the Slave are “ON-ON-
OFF-OFF-ON-ON-OFF-ON”, and the values from 000010 (0009 H) to 000009 (0008 H) are
respectively “OFF-ON”.
Response (Slave)
Slave address Function Byte count
Data
(000008 to
000001)
Data
(000010 to
000009)
Error check (CRC16)
Low High
11 H 01 H 02 H CD H 01 H ## H ## H
CRC16
CRC16

1 Modbus RTU Protocol
12 © Copyright Reserved Autonics Co., Ltd.
1.2 Read input status (Func 02–02H)
Read Input ON/OFF status (1X reference) in Slave device.
(1) Query (Master)
Slave address Function
Starting address
No. of points
Error check (CRC16)
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
(2) Response (Slave)
Slave address Function Byte count Data Data Data
Error check (CRC16)
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
If read the 10 input status (ON: 1, OFF: 0) within range 100001 (0000 H) to 100010 (0009 H) in
the Slave (Address 17) from the Master.
Query (Master)
Slave address Function
Starting address
No. of points
Error check (CRC16)
High
Low
High
Low
Low
High
11 H 02 H 00 H 00 H 00 H 0A H ## H ## H
If the values range 100008 (0007 H) to 100001 (0000 H) on Slave are “ON-ON-OFF-OFF-ON-
ON-OFF-ON”, and the values of 100010 (0009 H) and 100009 (0008 H) are respectively “OFF-
ON”.
Response (Slave)
Slave address Function Byte count
Data
(100008 to
100001)
Data
(100010 to
100009)
Error check (CRC16)
Low High
11 H 02 H 02 H CD H 01 H ## H ## H
CRC16
CRC16

1 Modbus RTU Protocol
© Copyright Reserved Autonics Co., Ltd. 13
1.3 Read holding registers (Func 03–03H)
Read the Binary data of Holding Registers (4X reference) in Slave device.
(1) Query (Master)
Slave address Function
Starting address
No. of points
Error check (CRC16)
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
(2) Response (Slave)
Slave address Function Byte count Data Data Data Error check (CRC16)
High
Low
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
If read the 2 values from Holding Register 400001 (0000 H) to 400002 (0001 H), in Slave
(Address 17) from the Master.
Query (Master)
Slave address Function
Starting address
No. of points
Error check (CRC16)
High
Low
High
Low
Low
High
11 H 03 H 00 H 00 H 00 H 02 H ## H ## H
If the value of 400001 (0000 H) on Slave is “555 (22B H)” and the value of 400002 (0001 H) is
“100 (64 H)”.
Response (Slave)
Slave address Function Byte count Data Data Error check (CRC16)
High
Low
High
Low
Low
High
11 H 03 H 04 H 02 H 2B H 00 H 64 H ## H ## H
CRC16
CRC16

1 Modbus RTU Protocol
14 © Copyright Reserved Autonics Co., Ltd.
1.4 Read input registers (Func 04–04H)
Read the Binary data of Input Registers (3X reference) in Slave device.
(1) Query (Master)
Slave address Function
Starting address
No. of points
Error check (CRC16)
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
(2) Response (Slave)
Slave address Function Byte count Data Data Data Error check (CRC16)
High
Low
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
If read the 2 values within the range from Input Register 300001 (0000 H) to 300002 (0001 H) on
Slave (Address 17) from Master.
Query (Master)
Slave address Function
Starting address
No. of points
Error check (CRC16)
High
Low
High
Low
Low
High
11 H 04 H 00 H 00 H 00 H 02 H ## H ## H
If the values of 300001 (0000 H) and 300002 (0001 H) on Slave are respectively “10 (A H)” and
“20 (14 H)”.
Response (Slave)
Slave address Function Byte count Data Data Error check (CRC16)
High
Low
High
Low
Low
High
11 H 04 H 04 H 00 H 0A H 00 H 14 H ## H ## H
CRC16
CRC16

1 Modbus RTU Protocol
© Copyright Reserved Autonics Co., Ltd. 15
1.5 Force single coil (Func 05–05H)
Turns ON (FF00 H) or OFF (0000 H) of single coil (0X reference) status within slave device.
(1) Query (Master)
Slave address Function
Starting address
Preset data
Error check (CRC16)
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
(2) Response (Slave)
Slave address Function
Starting address
Preset data
Error check (CRC16)
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
If Coil 000001 (0000 H) turns ON of Slave (Address 17) from Master.
Query (Master)
Slave address Function
Starting address
Preset data
Error check (CRC16)
High
Low
High
Low
Low
High
11 H 05 H 00 H 00 H FFH 00 H ## H ## H
Response (Slave)
Slave address Function
Starting address
Preset data
Error check (CRC16)
High
Low
High
Low
Low
High
11 H 05 H 00 H 00 H FF H 00 H ## H ## H
CRC16
CRC16

1 Modbus RTU Protocol
16 © Copyright Reserved Autonics Co., Ltd.
1.6 Preset single registers (Func 06–06H)
Read the Binary data of single Holding Registers (4X reference) in Slave device.
(1) Query (Master)
Slave address Function
Starting address
Preset data
Error check (CRC16)
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
(2) Response (Slave)
Slave address Function
Starting address
Preset data
Error check (CRC16)
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
If write “10(A H)” to Holding Register 40001(0000 H) on Slave(Address 17) from Master.
Query (Master)
Slave address Function
Starting address
Preset data
Error check (CRC16)
High
Low
High
Low
Low
High
11 H 06 H 00 H 00 H 00 H 0A H ## H ## H
Response (Slave)
Slave address Function
Starting address
Preset data
Error check (CRC16)
High
Low
High
Low
Low
High
11 H 06 H 00 H 00 H 00 H 0A H ## H ## H
CRC16
CRC16

1 Modbus RTU Protocol
© Copyright Reserved Autonics Co., Ltd. 17
1.7 Preset multiple registers (Func 16–10H)
Write the Binary data of Holding Registers (4X reference) consecutively in Slave device.
(1) Query (Master)
Slave
Address
Function
Starting
Address
No. of register Byte count Data Data
Error check
(CRC16)
High
Low
High
Low
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
(2) Response (Slave)
Slave address Function
Starting address
No. of register
Error check(CRC16)
High
Low
High
Low
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
If write “10 (A H)” in common to the range of Holding Register 400001 (0000 H) to 400002 (0001
H) on Slave (Address 17) from Master.
Query (Master)
Slave
address Function
Starting
Address
No. of register Byte count Data Data
Error check
(CRC16)
High
Low
High
Low
High
Low
High
Low
Low
High
11 H 10 H 00 H 00 H 00 H 02 H 04 H 00 H 0A H 00 H 0A H ## H ## H
Response (Slave)
Slave address Function
Starting address
No. of register
Error check (CRC16)
High
Low
High
Low
Low
High
11 H 10 H 00 H 00 H 00 H 02 H ## H ## H
Please use the Single Register Write function rather than Multi Register Write function if you use
the slave (device) connecting with external devices such as PLC, Graphic Panel, except in the
case of download that presets the minimum/maximum or basic value of parameter by Input
specifications in PC Loader Program
CRC16
CRC16

1 Modbus RTU Protocol
18 © Copyright Reserved Autonics Co., Ltd.
1.8 Exception response-error code
If occurs an error, send a response command and transmit each Exception Code after set(1) the
highest-level bit of received command (Function).
Slave address Function
+80 H
Exception
code
Error check (CRC16)
Low
High
1Byte 1Byte 1Byte 1Byte 1Byte
ILLEGAL FUNCTION (Exception Code: 01 H): Acommand that is not supported
ILLEGAL DATAADDRESS (Exception Code: 02 H)
: Starting address of queried data is inconsistent with transmittable address from the
device.
ILLEGAL DATA VALUE (Exception Code: 03 H)
: Numbers of queried data are inconsistent with the numbers of transmittable
(transferable) data from the device.
SLAVE DEVICE FAILURE (Exception Code: 04 H)
: Not properly completed the queried command (order).
Read the output status of non-existing coil 010001 (03E8 H) [ON: 1, OFF: 0] on Slave (Address
17) from Master.
Query (Master)
Slave address Function
Starting address
No. of points
Error check (CRC16)
High
Low
High
Low
Low
High
11 H 01 H 03 H E8 H 00 H 01 H ## H ## H
Response (Slave)
Slave address
Function
+80 H Exception Code
Error check (CRC16)
Low
High
11 H 81 H 02 H ## H ## H
CRC16

2 Modbus Mapping Table
© Copyright Reserved Autonics Co., Ltd. 19
2Modbus Mapping Table
2.1 Reset/Output
No (Address) Func Explanation Setting range Notice
000001 (0000) 01/05 Reset※10: OFF 1: ON -
000002 (0001) 01 OUT2 output 0: OFF 1: ON -
000003 (0002) 01 OUT1 output 0: OFF 1: ON -
000004 (0003) 01 BATCH output 0: OFF 1: ON For BATCH output model
000005 (0004) 01/05 BATCH resets※10: OFF 1: ON For BATCH output model
※1: For Reset/BATCH resets ON using Func.05, input FF00 H to DATA.
For more information, refer to '1.5 Force Single Coil (Func 05-05 H).
2.2 Terminal input status
No (Address) Func Explanation Setting range Notice
100001 (0000) 02 INA input status 0: OFF 1: ON Terminal input status
100002 (0001) 02 INB input status 0: OFF 1: ON Terminal input status
100003 (0002) 02 INHIBIT input status 0: OFF 1: ON Terminal input status
100004 (0003) 02 RESET input status 0: OFF 1: ON Terminal input status
100005 (0004) 02 BATCH RESET input status 0: OFF 1: ON Terminal input status

2 Modbus Mapping Table
20 © Copyright Reserved Autonics Co., Ltd.
2.3 Product Information
No (Address) Func Explanation Notice
300001 to 300100 04 Reserved -
300101 (0064) 04 Product number H Model ID
300102 (0065) 04 Product number L
300103 (0066) 04 Hardware version -
300104 (0067) 04 Software version -
300105 (0068) 04 Model no. 1 “CT”
300106 (0069) 04 Model no. 2 “6M”
300107 (006A) 04 Model no. 3 “-2”
300108 (006B) 04 Model no. 4 “PT”
300109 (006C) 04 Reserved -
300110 (006D) 04 Reserved -
300111 (006E) 04 Reserved -
300112 (006F) 04 Reserved -
300113 (0070) 04 Reserved -
300114 (0071) 04 Reserved -
300115 (0072) 04 Reserved -
300116 (0073) 04 Reserved -
300117 (0074) 04 Reserved -
300118 (0075) 04 Coil Status Start Address 0000
300119 (0076) 04 Coil Status Quantity -
300120 (0077) 04 Input Status Start Address 0000
300121 (0078) 04 Input Status Quanity -
300122 (0079) 04 Holding Register Start Address 0000
300123 (007A) 04 Holding Register Quantity -
300124 (007B) 04 Input Register Start Address 0064
300125 (007C) 04 Input Register Quantity -