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. 719-1936
Mfr. Part No.750-1504
BrandWago
£92.02
Each
Units
I/O SYSTEM 750 - 16 (Channel) - Digital 750 Series - - 24 V dc - Output Module 67mm 12mm 100mm
RS Stock No. 508-3959
Mfr. Part No.750600
BrandWago
£12.14
Each
Units
I/O SYSTEM 750 - - - - 750 Series - - - - End Module 100mm 12mm 64mm
RS Stock No. 667-9251
Mfr. Part No.750-530
BrandWago
£53.99
Each
Units
I/O SYSTEM 750 - 8 (Channel) - Digital 750 Series - - 24 V dc - Output Module 100mm 12mm 64mm
RS Stock No. 667-9236
Mfr. Part No.750-430
BrandWago
£47.85
Each
Units
I/O SYSTEM 750 8 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 100mm 12mm 64mm
RS Stock No. 508-3915
Mfr. Part No.750513
BrandWago
£45.91
Each
Units
I/O SYSTEM 750 - 2 (Channel) - Digital, Relay 750 Series - - 230 V dc - Output Module 100mm 12mm 64mm
RS Stock No. 868-7374
Mfr. Part No.750-517
BrandWago
£44.54
Each
Units
750 - 2 Digital Relay - 2 (Output) - - 1 A @ 250 V ac, 1 A @ 40 V dc - 64mm 12mm 100mm
RS Stock No. 667-9217
Mfr. Part No.750-340
BrandWago
£336.06
Each
Units
750 Series 32 32 Analogue, Digital Analogue, Digital 750 Series 64 - 24 V - - - - -
RS Stock No. 719-1945
Mfr. Part No.750-1405
BrandWago
£80.98
Each
Units
I/O SYSTEM 750 16 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 67mm 12mm 100mm
RS Stock No. 508-3892
Mfr. Part No.750402
BrandWago
£29.86
Each
Units
I/O SYSTEM 750 4 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 100mm 12mm 64mm
RS Stock No. 868-7359
Mfr. Part No.750-461/003-000
BrandWago
£197.10
Each
Units
750 2 1 Analogue Voltage - 3 - - - DC to DC 64mm 12mm 100mm
RS Stock No. 508-3921
Mfr. Part No.750455
BrandWago
£173.93
Each
Units
I/O SYSTEM 750 4 (Channel) - Analogue - 750 Series - - - - Input Module 100mm 12mm 64mm
RS Stock No. 667-9242
Mfr. Part No.750-459
BrandWago
£146.00
Each
Units
I/O SYSTEM 750 4 (Channel) - Analogue - 750 Series - - 0 → 10 V - Input Module 100mm 12mm 64mm
RS Stock No. 667-9245
Mfr. Part No.750-469/003-000
BrandWago
£203.30
Each
Units
I/O SYSTEM 750 2 (Channel) - Analogue - 750 Series - - - - Input Module 100mm 12mm 64mm
RS Stock No. 667-9233
Mfr. Part No.750-432
BrandWago
£28.86
Each
Units
I/O SYSTEM 750 4 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 100mm 12mm 64mm
RS Stock No. 508-3937
Mfr. Part No.750554
BrandWago
£177.30
Each
Units
I/O SYSTEM 750 - 2 (Channel) - Analogue 750 Series - - - - Output Module 100mm 12mm 64mm
RS Stock No. 667-9258
Mfr. Part No.750-501
BrandWago
£28.35
Each
Units
I/O SYSTEM 750 - 2 (Channel) - Digital 750 Series - - 24 V dc - Output Module 100mm 12mm 64mm
RS Stock No. 508-3909
Mfr. Part No.750504
BrandWago
£33.70
Each
Units
I/O SYSTEM 750 - 4 - Digital 750 Series - - 24 V dc - Output Module 100mm 12mm 64mm
RS Stock No. 508-3943
Mfr. Part No.750461
BrandWago
£202.36
Each
Units
I/O SYSTEM 750 2 (Channel) - Analogue - 750 Series - - - - Input Module 100mm 12mm 64mm
RS Stock No. 719-1948
Mfr. Part No.750-559
BrandWago
£146.00
Each
Units
I/O SYSTEM 750 - 4 (Channel) - Analogue 750 Series - - 0 → 10 V - Output Module 100mm 12mm 64mm
RS Stock No. 667-9220
Mfr. Part No.750-400
BrandWago
£20.45
Each
Units
I/O SYSTEM 750 2 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 100mm 12mm 64mm