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 For Use With Series Accessory Type
RS Stock No. 821-1772
Mfr. Part No.CP1W-ADB21
BrandOmron
MYR657.24
Each
units
CP1L CPU Unit IB IL 24 DO 16-XC-PAC PLC I/O Module
RS Stock No. 855-3476
Mfr. Part No.2861687
MYR783.14
Each
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- 750 PLC I/O Module
RS Stock No. 855-3467
Mfr. Part No.2861470
MYR314.75
Each
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- FX5 PLC I/O Module
RS Stock No. 821-1781
Mfr. Part No.CP1W-DAB21V
BrandOmron
MYR657.24
Each
units
CP1L CPU Unit IB IL CAN-MA-XC-PAC PLC I/O Module
RS Stock No. 889-1031
Mfr. Part No.SNAP-ODC5R
BrandOpto 22
MYR346.71
Each
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RS Stock No. 855-3470
Mfr. Part No.2861690
MYR572.60
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- FX5 PLC I/O Module
RS Stock No. 821-1784
Mfr. Part No.CP1W-MAB221
BrandOmron
MYR1,110.73
Each
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CP1L CPU Unit IB IL AI 2/SF-XC-PAC PLC I/O Module
RS Stock No. 855-1436
Mfr. Part No.2878641
MYR2,947.61
Each
units
- SIMATIC S7-1500 -