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. 855-3489
Mfr. Part No.2861700
PHP6,164.94
Each
units
IB IL 24 DO2-2A-2MBD-PAC - 2 - Digital - - - - 4 A - 119.5mm 12.2mm 71.5mm
RS Stock No. 467-838
Mfr. Part No.6GK5310-0BA00-2AA3
BrandSiemens
PHP196,232.39
Each
units
6GK5 310 - - - - - 14 - 24 V dc - - 125mm 120mm 123mm
RS Stock No. 855-3344
Mfr. Part No.2701214
PHP4,321.27
Each
units
IB IL 24/48 DOR 2/W-XC-PAC - 2 - Relay - - - - 4 A - 119.8mm 12.2mm 71.5mm
RS Stock No. 409-808
Mfr. Part No.Q62DAN
PHP27,881.70
Each
units
MELSEC Q 2 2 (Channel) Digital Analogue MELSEC Q Series 4 - 24 V dc - Analogue Digital Converter 98mm 27.4mm 112mm
RS Stock No. 746-6549
Mfr. Part No.6ES7321-1EL00-0AA0
BrandSiemens
PHP34,785.00
Each
units
- 32 - Digital - S7-300 Series - - 120 V ac - Input 125mm 40mm 120mm
RS Stock No. 770-2466
Mfr. Part No.TM5SAI2H
PHP21,867.08
Each
units
TM5 2 - Analogue - Modicon LMC058, Modicon M258 - - 24 V dc 50 mA - 99mm 12.5mm 75mm
RS Stock No. 855-3381
Mfr. Part No.2727365
PHP43,327.86
Each
units
IB IL 400 MLR 1-8A 2 - - Motor - - - 187 → 600 V ac - - 224mm 63mm 109mm
RS Stock No. 893-7843
Mfr. Part No.2700839
PHP85,215.31
Each
units
IB ST 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. 889-0918
Mfr. Part No.SNAP-IDC5G
BrandOpto 22
PHP5,973.37
Each
units
- - - - - - - - - - - 18.29mm - 82.55mm
RS Stock No. 888-7903
Mfr. Part No.G4OAC5A
BrandOpto 22
PHP1,461.50
Each
units
G4 1 1 Digital Digital AC Voltage - - - 24 → 280 V ac 3 A Digital AC Output 48.8mm 12.2mm 41.1mm
RS Stock No. 467-664
Mfr. Part No.6GK5307-3BL00-2AA3
BrandSiemens
PHP383,121.32
Each
units
6GK5 307 - - - - - 14 - 24 V dc - - 125mm 120mm 123mm
RS Stock No. 135-9285
Mfr. Part No.FX5-16ET/ESS-H
BrandMitsubishi
PHP19,532.52
Each
units
FX5 8 8 DC Transistor MELSEC iQ-F Series PLC 16 - 24 V dc 1.6 A I/O Module 40mm 90mm 83mm
RS Stock No. 893-6702
Mfr. Part No.1315710000
BrandWeidmuller
PHP23,244.52
Each
units
- 4 - Analogue Temperature - - 4 - - - Analogue Input 120mm 11.5mm 76mm
RS Stock No. 889-1615
Mfr. Part No.SNAP-PAC-R1
BrandOpto 22
PHP80,941.90
Each
units
SNAP PAC R - - - - SNAP PAC System - - - - Analogue, Digital 84.15mm 44.44mm 106.37mm
New
RS Stock No. 196-1255
Mfr. Part No.2700074
PHP33,853.45
Each
units
- 8 4 Digital Digital INTERBUS 4 (Digital Output), 8 (Digital Input) - 5 V 500 mA - 164mm 136.8mm 71.5mm
RS Stock No. 889-0915
Mfr. Part No.SNAP-IDC5MA
BrandOpto 22
PHP12,322.61
Each
units
- - - - - - - - - - - 18.29mm - 82.55mm
RS Stock No. 888-7940
Mfr. Part No.G4ODC5
BrandOpto 22
PHP1,460.94
Each
units
G4 - - DC Digital Digital DC Voltage - - - 5 → 60 V dc 3 A Digital DC Output 48.8mm 12.2mm 41.1mm
RS Stock No. 662-3520
Mfr. Part No.6ES7193-4CA20-0AA0
BrandSiemens
PHP665.35
Each
units
ET200S - - - - ET200S Series - - - - Terminal Module - - -
RS Stock No. 905-5469
Mfr. Part No.CSPID2R0
BrandRed Lion
PHP26,960.95
Each
units
CSPID 1 1 Universal (Analogue Current/Voltage), Universal (RTD), Universal (Thermocouple) Relay - - - - - - - - -
RS Stock No. 855-3527
Mfr. Part No.2862110
PHP3,860.26
Each
units
IB IL 24/230 DOR 1/W-2MBD-PAC - 1 - Relay - - - - 3 A - 119.8mm 12.2mm 71.5mm
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