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.


...
Read more Read less

Filters

Viewing 1 - 6 of 6 products
Results per page
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. 445-7450
Mfr. Part No.AC5211
HK$1,121.21
Each
units
- 2 2 Digital Digital - 4 - 18 → 30 V dc - - - - -
RS Stock No. 739-6755
Mfr. Part No.AC2250
HK$781.74
Each
units
Ecomot300 AS - I Network 4 - Digital, Transistor - Ecomot300 AS-I Network 4 - 26.5 → 31.6 V dc - - - - -
RS Stock No. 487-999
Mfr. Part No.AC5209
HK$1,434.20
Each
units
- 4 4 Digital Digital - 8 - 18 → 30 V dc - - - - -
RS Stock No. 739-6765
Mfr. Part No.AC5208
HK$1,026.66
Each
units
AS-I Bus System - 4 - Digital Ecomot300 AS-I Bus System 4 - 26.5 → 31.6 V dc - - 103mm 45mm 44.7mm
RS Stock No. 739-6768
Mfr. Part No.AC2216
HK$2,706.80
Each
units
Ecomot300 AS - I Module 4 - Analogue - Ecomot300 AS-I Module 4 - 26.5 → 31.6 V dc - - - - -
RS Stock No. 739-6759
Mfr. Part No.AC2252
HK$761.51
Each
units
Ecomot300 AS - I Module - 4 - Digital, Transistor Ecomot300 AS-I Module 4 - 26.5 → 31.6 V dc 1 (4 Channel) A - - - -