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. 746-6555
Mfr. Part No.6ES7321-1FH00-0AA0
BrandSiemens
PHP17,509.23
Each
units
- 16 - Digital - S7-300 Series - - 120/230 V ac - Input 125mm 40mm 120mm
RS Stock No. 508-3909
Mfr. Part No.750504
BrandWago
PHP5,869.90
Each
units
I/O SYSTEM 750 - 4 - Digital 750 Series - - 24 V dc - Output Module 100mm 12mm 64mm
RS Stock No. 818-4235
Mfr. Part No.CJ1WID212
BrandOmron
PHP16,341.95
Each
units
CJ1W-ID 16 - Voltage - CJ/NJ Controllers 16 (Input) - 24 V dc - - 95.4mm 31mm 89mm
RS Stock No. 539-0774
Mfr. Part No.FX3U-4AD-TC-ADP
BrandMitsubishi
PHP23,190.00
Each
units
FX3U Series 4 - Analogue, J Type, K Type Digital, J Type, K Type FX3U Series - - 5 V dc, 24 V dc - Analogue Temperature Input Adapter 106mm 17.6mm 89.5mm
RS Stock No. 667-9233
Mfr. Part No.750-432
BrandWago
PHP2,313.23
Each
units
I/O SYSTEM 750 4 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 100mm 12mm 64mm
RS Stock No. 735-2910
Mfr. Part No.6GK7243-5DX30-0XE0
BrandSiemens
PHP36,730.47
Each
units
S7-1200 - - - - S7-1200 Series - - - - - 100mm 30mm 75mm
RS Stock No. 719-1945
Mfr. Part No.750-1405
BrandWago
PHP7,546.60
Each
units
I/O SYSTEM 750 16 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 67mm 12mm 100mm
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. 770-2560
Mfr. Part No.TM5SE2IC01024
PHP23,423.46
Each
units
TM5 Series - - - - Modicon LMC058 - - - 63 mA - 99mm 12.5mm 75mm
RS Stock No. 662-3674
Mfr. Part No.6ES7138-4CA50-0AB0
BrandSiemens
PHP2,801.48
Each
units
SIMATIC ET 200S - - - Current, Potential, Voltage SIMATIC ET 200S Series - - 24 → 48 V dc - Power Module - - -
RS Stock No. 746-6536
Mfr. Part No.6ES7321-1BH10-0AA0
BrandSiemens
PHP17,120.14
Each
units
- 16 - Digital - S7-300 Series - - 24 V dc - Input 125mm 40mm 120mm
RS Stock No. 806-6972
Mfr. Part No.TM3DQ32TK
PHP14,941.21
Each
units
TM3 Series - 32 - Source, Transistor Modicon M221, Modicon M241, Modicon M251 - - 24 V 100 mA - 90mm 30.2mm 70mm
RS Stock No. 875-5701
Mfr. Part No.FX5-16EX/ES
BrandMitsubishi
PHP13,190.29
Each
units
FX5 16 - Sink, Source - FX5U CPU Module, FX5UC CPU Module - - - - Input 40mm 90mm 83mm
RS Stock No. 455-6822
Mfr. Part No.QX80
BrandMitsubishi
PHP11,283.73
Each
units
MELSEC Q 16 - Digital - MELSEC Q Series 16 - 24 V dc - - 98mm 27.4mm 90mm
RS Stock No. 735-2884
Mfr. Part No.6ES7231-4HA30-0XB0
BrandSiemens
PHP4,824.77
Each
units
SIMATIC S7-1200 1 - Analogue, Differential - SIMATIC S7-1200 Series 1 - 5 V dc - - 62mm 38mm 21mm
RS Stock No. 787-7942
Mfr. Part No.6ES7221-1BF32-0XB0
BrandSiemens
PHP7,993.80
Each
units
SM 1221 8 - Digital Digital SIMATIC S7-1200 Series - - 24 V dc - - 100mm 45mm 75mm
RS Stock No. 719-1948
Mfr. Part No.750-559
BrandWago
PHP11,702.39
Each
units
I/O SYSTEM 750 - 4 (Channel) - Analogue 750 Series - - 0 → 10 V - Output Module 100mm 12mm 64mm
RS Stock No. 510-1495
Mfr. Part No.CJ1WOD211
BrandOmron
PHP15,524.85
Each
units
SYSMAC CJ Series - 16 - Digital, Transistor SYSMAC CJ Series 16 - 12 → 24 V dc 500 mA - 89mm 31mm 95.4mm
RS Stock No. 147-988
Mfr. Part No.BMXAMI0410
PHP25,246.30
Each
units
M340 4 - Analogue - M340 Series 4 - 24 V dc - - - - -
RS Stock No. 787-7945
Mfr. Part No.6ES7221-1BH32-0XB0
BrandSiemens
PHP14,467.30
Each
units
SM 1221 16 - Digital - SIMATIC S7-1200 Series - - 24 V dc - - 100mm 45mm 75mm
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