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. 714-0095
Mfr. Part No.1766-L32BWA
£666.00
Each
Units
1766 20 12 Digital Relay MicroLogix 1400 Series 32 Ethernet - - - 87mm 180mm 90mm
RS Stock No. 714-0108
Mfr. Part No.1766-L32BXB
£666.00
Each
Units
1766 20 12 Digital Relay MicroLogix 1400 Series 32 Ethernet - - - 87mm 180mm 90mm
RS Stock No. 698-7357
Mfr. Part No.1746-OW16
£410.00
Each
Units
SLC 500 - 8 - Digital, Relay SLC 500 Series 16 - 5 → 125 V dc, 5 → 265 V ac 10 mA - - - -
RS Stock No. 698-7596
Mfr. Part No.1762-L40BWA
£713.00
Each
Units
1762 Series 20 (Standard 24 V dc), 4 (Fast 24 V dc) 16 (Relay) Digital Relay MicroLogix 1200 Series 40 - - 1.5 (Break) A, 15 (Make) A - 87mm 160mm 90mm
RS Stock No. 698-7679
Mfr. Part No.1762-IF4
£293.00
Each
Units
MicroLogix 1100, MicroLogix 1200, MicroLogix 1400 4 - Analogue Transistor MicroLogix 1100 Series, MicroLogix 1200 Series, MicroLogix 1400 Series 4 - -10 → 10 V dc ±21 mA - 87mm 40mm 90mm
RS Stock No. 698-7344
Mfr. Part No.1746-OB16
£397.00
Each
Units
SLC 500 - 16 - Digital, Transistor SLC 500 Series 16 - 24 V dc 500 mA - - - -
RS Stock No. 698-7770
Mfr. Part No.1763-L16BBB
£533.00
Each
Units
1763 2 (Analogue), 4 (Fast 24 V dc), 6 (24 V dc) 2 (Fast FET), 2 (FET), 2 (Relay) Analogue Relay MicroLogix 1100 Series 18 Ethernet - - - 87mm 110mm 90mm
RS Stock No. 698-7350
Mfr. Part No.1746-NI4
£955.00
Each
Units
SLC 500 4 - Analogue - SLC 500 Series 4 - 24 V dc 85 mA - - - -
RS Stock No. 698-7723
Mfr. Part No.1769-IQ32
£259.00
Each
Units
MicroLogix 1500 32 - Digital - MicroLogix 1500 Series 32 - 24 V dc - - - - -
RS Stock No. 698-7540
Mfr. Part No.1769-IQ16
£147.00
Each
Units
MicroLogix 1500 16 - Digital - MicroLogix 1500 Series 16 - 24 V dc - - - - -
RS Stock No. 698-7338
Mfr. Part No.1746-IB16
£308.00
Each
Units
SLC 500 16 - Digital - SLC 500 Series 16 - 24 V dc - - - - -
RS Stock No. 750-8633
Mfr. Part No.2080-IF4
£146.00
Each
Units
Micro 800 Series 4 4 Analogue Analogue Micro 830 Series 4 - 0 → 10 V 0 → 20 mA - - - -
RS Stock No. 698-7607
Mfr. Part No.1762-IF20F2
£293.00
Each
Units
MicroLogix 1200 2 2 Analogue, Differential Analogue MicroLogix 1200 Series 4 - - 4 → 20 mA - - - -
RS Stock No. 698-7691
Mfr. Part No.1769-IF4XOF2
£359.00
Each
Units
1769 Series 4 (Differential) 2 (Single Ended) Analogue, Differential, Transistor Analogue 1769 Series CompactLogix 6 - 24 V dc 0 → 20 mA - 118mm 35mm 87mm
RS Stock No. 751-1298
Mfr. Part No.1762-OF4
£277.00
Each
Units
MicroLogix 1762 - 1 Analogue - MicroLogix 1100 Series 1 - 0 → 10 V 4 → 20 mA - 90mm 40mm 87mm
RS Stock No. 751-1295
Mfr. Part No.1763-L16DWD
£533.00
Each
Units
MicroLogix 1100 6 6 Analogue Relay MicroLogix 1100 Series 6 Ethernet 12 → 24 V dc - - - - -
RS Stock No. 698-7354
Mfr. Part No.1746-NO4I
£1,250.00
Each
Units
SLC 500 - 4 (Channel) - Analogue SLC 500 Series 4 - 5 V dc, 24 V dc 195 mA - - - -
RS Stock No. 698-7666
Mfr. Part No.1762-IQ16
£175.00
Each
Units
MicroLogix 1100, MicroLogix 1200, MicroLogix 1400 16 - Digital - MicroLogix 1100 Series, MicroLogix 1200 Series, MicroLogix 1400 Series 16 - 24 V dc 2 → 12 mA - 87mm 40mm 90mm
RS Stock No. 698-7688
Mfr. Part No.1764-LRP
£541.36
Each
Units
1764 Series 28 - Digital Relay MicroLogix 1500 Series - - - - - - - -
RS Stock No. 698-7675
Mfr. Part No.1762-OW16
£212.00
Each
Units
MicroLogix 1100, MicroLogix 1200, MicroLogix 1400 - 16 - Digital, Relay MicroLogix 1100 Series, MicroLogix 1200 Series, MicroLogix 1400 Series 16 - 5 → 125 V dc, 5 → 265 V ac 10 mA - 87mm 40mm 90mm