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. 901-0826
Mfr. Part No.2903805
kr 4 312,67
Each
Units
TC MOBILE I/O X200 2 4 Analogue, Digital Relay PSI Modem SMS Relay 6 - 0 60 V dc 6 A Analogue, Digital 71.6mm 62.2mm 89.7mm
RS Stock No. 528-0576
Mfr. Part No.2862385
kr 3 220,31
Each
Units
ILB IB 24 DI16 DO16 16 16 Digital Digital INTERBUS 32 - 24 V dc 500 mA - 140.5mm 156mm 57mm
RS Stock No. 855-1379
Mfr. Part No.2862961
kr 1 814,54
Each
Units
IB IL 24 DO 16-PAC/SN - 16 - Digital - - - - 8 A - 140.5mm 48.8mm 71.5mm
RS Stock No. 710-6341
Mfr. Part No.2313643
kr 12 050,23
Each
Units
PSI-MODEM-SHDSL/ETH - - - - - - - 28 V dc, 240 V ac - - 86mm 12.3mm 96mm
RS Stock No. 528-0453
Mfr. Part No.2862343
kr 3 208,25
Each
Units
ILB IB 24 DI32 32 - Digital - INTERBUS 32 - 24 V dc - - 140.5mm 156mm 57mm
RS Stock No. 893-7843
Mfr. Part No.2700839
kr 11 089,53
Each
Units
IB ST 24 AO 4/EF - 4 - Analogue - 4 - -10 10 V dc, 0 10 V dc 0 20 mA, 4 20 mA Analogue Output 118mm 116mm 117mm
RS Stock No. 801-5766
Mfr. Part No.2700973
kr 4 156,04
Each
Units
ILC 131 ETH - - - - - - - - - - - - -
RS Stock No. 528-0447
Mfr. Part No.2832962
kr 4 334,06
Each
Units
ILB ETH 24 DI16 DIO16-2TX 16 16 Digital Digital ILB ETH Series 32 - 24 V dc 500 mA - 141mm 156mm 55mm
RS Stock No. 855-1411
Mfr. Part No.2869913
kr 8 214,68
Each
Units
IB IL EX-IS TEMP 4 RTD/TC-PAC 4 - - - - - - - - - 136.8mm 48.8mm 71.5mm
RS Stock No. 528-0582
Mfr. Part No.2863562
kr 2 167,08
Each
Units
ILB PB 24 DI 8 DIO8 8 8 Digital Digital Profibus Series 16 - 24 V dc 500 mA - 141.1mm 95mm 57mm
RS Stock No. 124-3351
Mfr. Part No.2906598
kr 45,92
Each
Units
IOA FEED-THRU/EX 1 1 Analogue Analogue - - - - - I/O Module 10.3mm 64.2mm 72.9mm
RS Stock No. 696-2128
Mfr. Part No.2313478
kr 3 070,22
Each
Units
FL COMSERVER BASIC 232/422/485 - - - - - - - 28 V dc, 240 V ac - - 86mm 12.3mm 96mm
RS Stock No. 855-3280
Mfr. Part No.2700965
kr 5 075,66
Each
Units
IB IL PM 3P/N/EF-PAC - - - - - - - - - - 119.8mm 48.8mm 71.5mm
RS Stock No. 528-0560
Mfr. Part No.2862369
kr 4 180,71
Each
Units
ILB IB 24 DO32 - 32 - Digital INTERBUS 32 - 24 V dc 500 mA - 140.5mm 156mm 57mm
RS Stock No. 893-7834
Mfr. Part No.2701956
kr 10 283,69
Each
Units
IB STME 24 BAI 8/EF 8 - Analogue Voltage - - 8 - 0 50 V dc - Analogue Input 118mm 116mm 117mm
RS Stock No. 855-3252
Mfr. Part No.2692720
kr 2 102,90
Each
Units
IB IL IFS-MA-PAC - - - - - - - - - - 135mm 24.4mm 71.5mm
RS Stock No. 855-3509
Mfr. Part No.2861988
kr 749,85
Each
Units
IB IL 24 DO 4-2MBD-PAC - 4 - Digital - - - - 2 A - 140.5mm 12.2mm 71.5mm
RS Stock No. 855-3498
Mfr. Part No.2861865
kr 3 581,96
Each
Units
IB IL SSI-PAC 3 4 - - - - - 19.2 30 V dc - - 140.5mm 48.8mm 71.5mm
RS Stock No. 855-3256
Mfr. Part No.2692885
kr 2 405,17
Each
Units
IB IL 24 DI 32/HD-2MBD-PAC 32 - Digital - - - - - - - 119.8mm 48.8mm 71.5mm
RS Stock No. 893-7837
Mfr. Part No.2700838
kr 10 980,56
Each
Units
IB ST 24 AI 4/EF 4 - Analogue Voltage - ST Station 4 - -10 10 V dc, 0 10 V dc - Analogue Input 118mm 116mm 117mm