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. 764-6252
Mfr. Part No.2901533
PHP18,725.51
Each
units
PLC-RPT- 24DC/21AU, RAD-DAIO6-IFS 1 (Analogue), 2 (Digital) 1 (Analogue), 2 (Digital) Analogue, Digital Analogue, Current, Digital, Relay, Voltage RAD-2400-IFS Wireless Module - - 19.2 → 30.5 V dc 20 mA - 99mm 17.5mm 114.5mm
RS Stock No. 696-2119
Mfr. Part No.2313452
PHP31,286.08
Each
units
FL COMSERVER UNI 232/422/485 - - - - - - - 28 V dc, 240 V ac - - 86mm 12.3mm 96mm
RS Stock No. 901-0817
Mfr. Part No.2903806
PHP36,701.92
Each
units
TC MOBILE I/O X200 AC 4 4 Digital Relay PSI Modem SMS Relay 8 - 125 V dc, 250 V ac 5 A Digital 71.6mm 62.2mm 89.7mm
RS Stock No. 528-0627
Mfr. Part No.2832849
PHP25,859.79
Each
units
FL SWITCH SF 16TX - - - - - - - 24 V dc - - 94.3mm 205mm 30mm
RS Stock No. 696-2137
Mfr. Part No.PSI-MODEM-GSM/ETH
PHP53,595.37
Each
units
PSI-MODEM-GSM/ETH - - - - - - - 24 V dc - - 99mm 35mm 114.5mm
RS Stock No. 124-3352
Mfr. Part No.2906599
PHP1,096.49
Each
units
IOA AI/AO/BFI/DS/0.5A/EX 1 (Analogue) 1 (Analogue) Analogue Analogue Field Devices 2 - - - I/O Module 10.3mm 64.2mm 72.9mm
RS Stock No. 855-3322
Mfr. Part No.2701161
PHP2,131.75
Each
units
IB IL 24 PWR IN-XC-PAC - - - - - - - - - - 119.8mm 12.2mm 71.5mm
RS Stock No. 528-0611
Mfr. Part No.2862411
PHP39,813.85
Each
units
ILB PB 24 DI16 DO16 16 16 Digital Digital Profibus Series 32 - 24 V dc 500 mA - 141.5mm 156mm 57mm
RS Stock No. 893-7830
Mfr. Part No.2701955
PHP60,058.73
Each
units
IB STME 24 AI 4/EF 4 - Analogue Voltage - - 4 - 0 → 10 V dc, -10 → 10 V dc - Analogue Input 118mm 116mm 117mm
RS Stock No. 855-3350
Mfr. Part No.2701215
PHP34,397.24
Each
units
IB IL AI 4/EF-XC-PAC 4 - Analogue - - - - 24 V dc - - 136.8mm 48.8mm 71.5mm
RS Stock No. 893-7846
Mfr. Part No.2701954
PHP82,047.14
Each
units
IB STME 24 AO 4/EF - 4 - Analogue - 4 - 0 → 10 V dc, -10 → 10 V dc 0 → 20 mA, 4 → 20 mA Analogue Output 118mm 116mm 117mm
RS Stock No. 855-1363
Mfr. Part No.2862932
PHP8,354.46
Each
units
IB IL 24 DI 8-PAC/SN 8 - Digital - - - - - - - 119.8mm 48.8mm 71.5mm
RS Stock No. 855-1464
Mfr. Part No.2897910
PHP34,224.31
Each
units
IB IL DALI-PAC - - - - - - - - - - 119.8mm 12.2mm 71.5mm
RS Stock No. 528-0649
Mfr. Part No.2832933
PHP36,018.45
Each
units
FL SWITCH SF 6TX/2FX 6 - - - - - - 24 V dc - - 115.3mm 135mm 30mm
New
RS Stock No. 190-2100
Mfr. Part No.2863627
PHP22,019.55
Each
units
IB IL RS 485/422-PRO-PAC 1 1 - - - 1 (Input), 1 (Output) - 7.5 V dc - Inline Function Terminal 24.4mm 71.5mm 136.8mm
RS Stock No. 855-3486
Mfr. Part No.2861768
PHP26,330.87
Each
units
IB IL IMPULSE-IN-PAC - - - - - - - - - - 135mm 12.2mm 71.5mm
RS Stock No. 855-3524
Mfr. Part No.2862097
PHP18,140.09
Each
units
IB IL RS 485/422-2MBD-PAC - - - - - - - 19.2 → 30 V dc - - 136.8mm 24.4mm 71.5mm
RS Stock No. 893-7834
Mfr. Part No.2701956
PHP59,982.09
Each
units
IB STME 24 BAI 8/EF 8 - Analogue Voltage - - 8 - 0 → 50 V dc - Analogue Input 118mm 116mm 117mm
RS Stock No. 855-3518
Mfr. Part No.2862013
PHP19,647.53
Each
units
IB IL 24 DO 16-2MBD-PAC - 16 - Digital - - - - 8 A - 140.5mm 48.8mm 71.5mm
RS Stock No. 855-3369
Mfr. Part No.2701219
PHP15,268.49
Each
units
IB IL AO 1/SF-XC-PAC - 1 - Analogue - - - 24 V dc - - 135mm 24.4mm 71.5mm