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. 868-7359
Mfr. Part No.750-461/003-000
BrandWago
TWD9,129.00
Each
units
750 2 1 Analogue Voltage - 3 - - - DC to DC 64mm 12mm 100mm
RS Stock No. 508-3937
Mfr. Part No.750554
BrandWago
TWD12,726.00
Each
units
I/O SYSTEM 750 - 2 (Channel) - Analogue 750 Series - - - - Output Module 100mm 12mm 64mm
RS Stock No. 667-9251
Mfr. Part No.750-530
BrandWago
TWD2,524.00
Each
units
I/O SYSTEM 750 - 8 (Channel) - Digital 750 Series - - 24 V dc - Output Module 100mm 12mm 64mm
RS Stock No. 667-9245
Mfr. Part No.750-469/003-000
BrandWago
TWD9,502.00
Each
units
I/O SYSTEM 750 2 (Channel) - Analogue - 750 Series - - - - Input Module 100mm 12mm 64mm
RS Stock No. 508-3943
Mfr. Part No.750461
BrandWago
TWD9,200.00
Each
units
I/O SYSTEM 750 2 (Channel) - Analogue - 750 Series - - - - Input Module 100mm 12mm 64mm
RS Stock No. 508-3959
Mfr. Part No.750600
BrandWago
TWD534.00
Each
units
I/O SYSTEM 750 - - - - 750 Series - - - - End Module 100mm 12mm 64mm
RS Stock No. 868-7371
Mfr. Part No.750-616
BrandWago
TWD538.00
Each
units
750 - - - - - - - - - - 64mm 12mm 100mm
RS Stock No. 868-7374
Mfr. Part No.750-517
BrandWago
TWD3,451.00
Each
units
750 - 2 Digital Relay - 2 (Output) - - 1 A @ 250 V ac, 1 A @ 40 V dc - 64mm 12mm 100mm
RS Stock No. 882-0335
Mfr. Part No.750-642
BrandWago
TWD12,628.00
Each
units
750 - - Voltage Transmitter 750 Series - - - - - 100mm 24mm 70.5mm
RS Stock No. 667-9233
Mfr. Part No.750-432
BrandWago
TWD1,337.00
Each
units
I/O SYSTEM 750 4 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 100mm 12mm 64mm
RS Stock No. 719-1942
Mfr. Part No.750-555
BrandWago
TWD7,647.00
Each
units
I/O SYSTEM 750 - 4 (Channel) - Analogue 750 Series - - - - Output Module 100mm 12mm 64mm
RS Stock No. 882-0322
Mfr. Part No.758-915
BrandWago
TWD17,331.00
Each
units
750 1 1 - - 750 Series 2 - 24 V dc - - 91mm 66mm -
RS Stock No. 508-3909
Mfr. Part No.750504
BrandWago
TWD3,219.00
Each
units
I/O SYSTEM 750 - 4 - Digital 750 Series - - 24 V dc - Output Module 100mm 12mm 64mm
RS Stock No. 667-9236
Mfr. Part No.750-430
BrandWago
TWD2,237.00
Each
units
I/O SYSTEM 750 8 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 100mm 12mm 64mm
RS Stock No. 719-1936
Mfr. Part No.750-1504
BrandWago
TWD4,262.00
Each
units
I/O SYSTEM 750 - 16 (Channel) - Digital 750 Series - - 24 V dc - Output Module 67mm 12mm 100mm
RS Stock No. 667-9227
Mfr. Part No.750-425
BrandWago
TWD2,148.00
Each
units
I/O SYSTEM 750 2 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 100mm 12mm 64mm
RS Stock No. 508-3892
Mfr. Part No.750402
BrandWago
TWD2,163.00
Each
units
I/O SYSTEM 750 4 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 100mm 12mm 64mm
RS Stock No. 719-1948
Mfr. Part No.750-559
BrandWago
TWD6,763.00
Each
units
I/O SYSTEM 750 - 4 (Channel) - Analogue 750 Series - - 0 → 10 V - Output Module 100mm 12mm 64mm
RS Stock No. 508-3921
Mfr. Part No.750455
BrandWago
TWD7,788.00
Each
units
I/O SYSTEM 750 4 (Channel) - Analogue - 750 Series - - - - Input Module 100mm 12mm 64mm
RS Stock No. 667-9220
Mfr. Part No.750-400
BrandWago
TWD1,534.00
Each
units
I/O SYSTEM 750 2 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 100mm 12mm 64mm