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
TWD27,770.00
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. 512-5946
Mfr. Part No.CJ1W-DA021
BrandOmron
TWD20,026.00
Each
units
CJ Series - 2 - Analogue CJ Series 2 - 24 V dc 12 mA - 90mm 31mm 65mm
RS Stock No. 136-2798
Mfr. Part No.NXAD2603
BrandOmron
TWD6,922.00
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. 459-5394
Mfr. Part No.SRT2ID161
BrandOmron
TWD8,131.00
Each
units
SRT2 16 - Digital Mosfet, Relay, Transistor SRT2 Series 16 - 24 V dc 300 (Per Point) mA - 105mm 48mm 50mm
RS Stock No. 512-5889
Mfr. Part No.CJ1WID211
BrandOmron
TWD6,490.00
Each
units
SYSMAC CJ Series 16 - Digital - SYSMAC CJ Series 16 - 20.4 → 26.4 V dc 3 mA - 89mm 31mm 95.4mm
RS Stock No. 510-4494
Mfr. Part No.CJ1WOC211SL
BrandOmron
TWD11,230.00
Each
units
CJ2 - 16 - Digital, Relay CJ2 Series - - 24 V dc, 250 V ac 2 A - 90mm 31mm 89mm
RS Stock No. 818-4210
Mfr. Part No.C500CE241
BrandOmron
TWD803.00
Each
units
- - - - - Omron CJ1W-OC/OA/OD - - - - - - - -
RS Stock No. 145-936
Mfr. Part No.CJ1W-DRM21
BrandOmron
TWD29,250.00
Each
units
- - - - - CJ Series 2048 (Fixed Allocation) - 11 → 25 V dc - - 31mm 90mm 78.7mm
RS Stock No. 512-5895
Mfr. Part No.CJ1W-OC211
BrandOmron
TWD9,870.00
Each
units
SYSMAC CJ Series - 16 - Digital, Relay SYSMAC CJ Series 16 - 24 V dc, 250 V ac 2 A - 89mm 31mm 95.4mm
RS Stock No. 818-4241
Mfr. Part No.CJ1WMD232
BrandOmron
TWD11,803.00
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. 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. 459-5423
Mfr. Part No.SRT2OD161
BrandOmron
TWD8,653.00
Each
units
SRT2 16 - Digital Mosfet, Relay, Transistor SRT2 Series 16 - 24 V dc 300 (Per Point) mA - 105mm 48mm 50mm
RS Stock No. 510-1423
Mfr. Part No.CJ1W-DA041
BrandOmron
TWD17,995.00
Each
units
CJ Series - 4 - Analogue CJ Series 4 - 24 V dc 12 mA - 90mm 31mm 65mm
RS Stock No. 512-5902
Mfr. Part No.CJ1W-OD212
BrandOmron
TWD8,851.00
Each
units
SYSMAC CJ Series - 16 - Digital, Transistor SYSMAC CJ Series 16 - 24 V dc 500 mA - 89mm 31mm 95.4mm
RS Stock No. 510-1518
Mfr. Part No.CJ1W-SCU21
BrandOmron
TWD21,784.00
Each
units
- - - - - CPU Racks - - - - - - - -
RS Stock No. 512-5930
Mfr. Part No.CJ1W-SCU41
BrandOmron
TWD25,164.00
Each
units
CJ Series - - - - CJ Series - - - - - - - -
RS Stock No. 136-2807
Mfr. Part No.NXPF0730
BrandOmron
TWD1,174.00
Each
units
NX - - - - EtherCAT Coupler Unit, NX Series CPU Unit - - - 10 A - 12mm 71mm 100mm
RS Stock No. 136-2792
Mfr. Part No.NXID4442
BrandOmron
TWD2,296.00
Each
units
NX 8 - Digital - CJ PLC, EtherCAT Coupler Unit, NX Series CPU Unit 8 (Input) - 24 V dc - DC Input 12mm 71mm 100mm
RS Stock No. 510-1710
Mfr. Part No.CJ1W-AD041
BrandOmron
TWD21,514.00
Each
units
SYSMAC CJ Series, SYSMAC CP1H, SYSMAC CP1L 4 - Analogue - SYSMAC CJ Series, SYSMAC CP1H Series, SYSMAC CP1L Series 4 - -10 → 10 V, 0 → 10 V, 0 → 5 V, 1 → 5 V - - 90mm 31mm 65mm
RS Stock No. 510-1489
Mfr. Part No.CJ1WOC201.1
BrandOmron
TWD6,150.00
Each
units
SYSMAC CJ Series - 8 - Digital, Relay SYSMAC CJ Series 8 - 24 V dc, 250 V ac 2 A - 89mm 31mm 95.4mm