PLC I/O Modules

PLC I/O modules are one of the three core components that operate a programmable logic controller. I/O refers to input/output. PLC I/O modules act as messengers between a processor and an I/O device.

How do PLC I/O modules work?

PLC I/O modules assist the data exchange between an external device and computer memory. Their main job is to process communication to the PLC and accept commands sent from a processor. They can also detect errors, run status reports and co-ordinate a timely flow of data.

Types of PLC I/O modules

The type of PLC I/O modules used by a programmable logic controller depends on the type of input device. These are categorised as input or output types. Some PLCs respond to digital inputs and outputs, whereas others respond to analog signals. Digital inputs are either on or off, and analog signals process conditions as voltage. Other types include discrete, speciality and communication modules. Smaller PLCs are usually designed with fixed I/O points.


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Description Price Manufacturer Series Number of Inputs Number of Outputs Input Type Output Type For Use With Number of I/O Interface Voltage Category Output Current Module Type Length Width Depth
RS Stock No. 510-1417
Mfr. Part No.CJ1W-AD081
BrandOmron
TWD29,523.00
Each
units
SYSMAC CJ Series, SYSMAC CP1H, SYSMAC CP1L 8 - Analogue - SYSMAC CJ Series, SYSMAC CP1H Series, SYSMAC CP1L Series 8 - -10 → 10 V, 0 → 10 V, 0 → 5 V, 1 → 5 V - - 90mm 31mm 65mm
RS Stock No. 146-002
Mfr. Part No.GRT1-DA2V
BrandOmron
TWD18,540.00
Each
units
GRT1 Series - 2 - Analogue - 2 - - - - - - -
RS Stock No. 818-4235
Mfr. Part No.CJ1WID212
BrandOmron
TWD12,792.00
Each
units
CJ1W-ID 16 - Voltage - CJ/NJ Controllers 16 (Input) - 24 V dc - - 95.4mm 31mm 89mm
RS Stock No. 136-2798
Mfr. Part No.NXAD2603
BrandOmron
TWD6,290.00
Each
units
NX 2 - Analogue - CJ PLC, EtherCAT Coupler Unit, NX Series CPU Unit 2 (Input) - -10 → +10 V - Input 12mm 71mm 100mm
RS Stock No. 145-920
Mfr. Part No.CJ1W-PRM21
BrandOmron
TWD71,111.00
Each
units
CJ1W Series - - - - - - - - - - 31mm 90mm 68mm
RS Stock No. 818-4210
Mfr. Part No.C500CE241
BrandOmron
TWD1,987.00
Each
units
- - - - - Omron CJ1W-OC/OA/OD - - - - - - - -
RS Stock No. 146-052
Mfr. Part No.GRT1-ROS2
BrandOmron
TWD7,064.00
Each
units
GRT1 Series - 2 - - DeviceNet Communication 2 - - - - - - -
RS Stock No. 136-2802
Mfr. Part No.NXDA2603
BrandOmron
TWD6,421.00
Each
units
NX - 2 - Analogue CJ PLC, EtherCAT Coupler Unit, NX Series CPU Unit 2 (Output) - -10 → +10 V - Output 12mm 71mm 100mm
RS Stock No. 821-1784
Mfr. Part No.CP1W-MAB221
BrandOmron
TWD8,904.00
Each
units
CP1W 2 2 Analogue Analogue CP1L CPU Unit 2 - 0 → 10 V 0 → 20 mA - 86mm 90mm 50mm
RS Stock No. 459-5439
Mfr. Part No.SRT2ROC08
BrandOmron
TWD13,905.00
Each
units
SRT - 8 - Relay, Voltage SRT2 Series 8 - - 3 A - 50mm 100mm 50mm
RS Stock No. 818-4241
Mfr. Part No.CJ1WMD232
BrandOmron
TWD16,555.00
Each
units
CJ1W-MD 16 16 Voltage Transistor CJ/NJ Controllers 16 (Input), 16 (Output) - 24 V dc 500 mA - 95.4mm 31mm 83.6mm
RS Stock No. 512-5930
Mfr. Part No.CJ1W-SCU41
BrandOmron
TWD25,638.00
Each
units
CJ Series - - - - CJ Series - - - - - - - -
RS Stock No. 136-2803
Mfr. Part No.NXDA3203
BrandOmron
TWD7,625.00
Each
units
NX - 4 - Analogue CJ PLC, EtherCAT Coupler Unit, NX Series CPU Unit 4 (Output) - - 4 → 20 mA Output 12mm 71mm 100mm
RS Stock No. 136-2799
Mfr. Part No.NXAD3203
BrandOmron
TWD7,940.00
Each
units
NX 4 - Analogue - CJ PLC, EtherCAT Coupler Unit, NX Series CPU Unit 4 (Input) - - - Input 12mm 71mm 100mm
RS Stock No. 510-1423
Mfr. Part No.CJ1W-DA041
BrandOmron
TWD32,948.00
Each
units
CJ Series - 4 - Analogue CJ Series 4 - 24 V dc 12 mA - 90mm 31mm 65mm
RS Stock No. 512-5946
Mfr. Part No.CJ1W-DA021
BrandOmron
TWD24,268.00
Each
units
CJ Series - 2 - Analogue CJ Series 2 - 24 V dc 12 mA - 90mm 31mm 65mm
RS Stock No. 821-1781
Mfr. Part No.CP1W-DAB21V
BrandOmron
TWD5,117.00
Each
units
CP1W - 2 - Analogue CP1L CPU Unit 2 - 0 → 10 V - - 86mm 90mm 50mm
RS Stock No. 821-1772
Mfr. Part No.CP1W-ADB21
BrandOmron
TWD5,117.00
Each
units
CP1W 2 - Analogue - CP1L CPU Unit 2 - 0 → 10 V 0 → 20 mA - 86mm 90mm 50mm
RS Stock No. 136-2806
Mfr. Part No.NXPF0630
BrandOmron
TWD2,880.00
Each
units
NX - - - - EtherCAT Coupler Unit, NX Series CPU Unit - - - 4 A - 12mm 71mm 100mm
RS Stock No. 136-2801
Mfr. Part No.NXDA2203
BrandOmron
TWD6,622.00
Each
units
NX - 2 - Analogue CJ PLC, EtherCAT Coupler Unit, NX Series CPU Unit 2 (Output) - - 4 → 20 mA Output 12mm 71mm 100mm