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. 443-0146
Mfr. Part No.EASY819-DC-RC
BrandEaton
HK$3,144.50
Each
units
Easy 800 Series 12 6 Digital Relay Easy 800 Series, Easy 819 18 - 20.4 → 28.8 V dc - - 90mm 107.5mm 72mm
RS Stock No. 478-9909
Mfr. Part No.MFD-T16
BrandEaton
HK$1,080.00
Each
units
MFD-AC-CP8 12 4 (Transistor) Digital Transistor MFD-CP8 - - 24 V dc - I/O Module 90mm 88.1mm 44mm
RS Stock No. 133-399
Mfr. Part No.101520
BrandEaton
HK$3,050.00
Each
units
- - - - - Easy 500 Series, Easy 700 Series, Easy 800 Series, EC4P, ES4P, MFD-CP8 - - 24 V - - 35.5mm 90mm 58mm
RS Stock No. 478-9915
Mfr. Part No.MFD-TA17
BrandEaton
HK$1,430.00
Each
units
MFD-AC-CP8 12 1 (Analogue), 4 (Transistor) Digital Transistor MFD-CP8 - - 24 V dc - I/O Module 90mm 88.1mm 44mm
RS Stock No. 478-9836
Mfr. Part No.MFD-80
BrandEaton
HK$1,070.00
Each
units
- - - - - MFD Series - - - - - 86.5mm 86.5mm 21.5mm
RS Stock No. 133-490
Mfr. Part No.233539
BrandEaton
HK$2,520.00
Each
units
- - - - - Easy 700 Series, Easy 800 Series, EC4P, ES4P, MFD-CP8 - - 24 V - - 35.5mm 90mm 58mm
RS Stock No. 479-6446
Mfr. Part No.EASY204-DP
BrandEaton
HK$2,760.00
Each
units
- - - - - Easy 700 Series, Easy 800 Series, EC4P, ES4P, MFD-CP8 - - 24 V - - 35.5mm 90mm 62mm
RS Stock No. 133-298
Mfr. Part No.106042
BrandEaton
HK$2,050.00
Each
units
MFD-AC-CP8, MFD-CP10 2 (Analogue), 2 (PT100), 6 (Digital) 4 Analogue, Digital, PT100 Transistor MFD-AC-CP8, MFD-CP10 14 - 24 V dc - - 90mm 89mm 25mm
RS Stock No. 763-1052
Mfr. Part No.EU5C-SWD-CAN
BrandEaton
HK$2,040.00
Each
units
- - - - - SmartWire-DT - - 24 V dc - - 90mm 35mm 127mm
RS Stock No. 763-1083
Mfr. Part No.EU5E-SWD-4D2R
BrandEaton
HK$690.00
Each
units
- 4 2 Digital Analogue, Relay SmartWire-DT - - 24 V dc 3 A - 90mm 35mm 101mm
RS Stock No. 478-9886
Mfr. Part No.MFD-R16
BrandEaton
HK$1,080.00
Each
units
MFD-AC-CP8, MFD-CP10 12 4 (Relay) Digital Relay MFD-AC-CP8, MFD-CP10 - - 24 V dc - I/O Module 90mm 88.1mm 44mm
RS Stock No. 763-1086
Mfr. Part No.EU5E-SWD-X8D
BrandEaton
HK$1,080.00
Each
units
- - 8 - Digital, Semiconductor SmartWire-DT - - 24 V dc 500 mA - 90mm 35mm 101mm
RS Stock No. 763-1061
Mfr. Part No.EU5C-SWD-EIP-MODTCP
BrandEaton
HK$3,230.00
Each
units
- - - - - SmartWire-DT - - 24 V dc - - 90mm 35mm 124mm
RS Stock No. 478-9892
Mfr. Part No.MFD-RA17
BrandEaton
HK$1,430.00
Each
units
MFD-AC-CP8, MFD-CP10 12 1 (Analogue), 4 (Relay) Digital Relay MFD-AC-CP8, MFD-CP10 - - 24 V dc - I/O Module 90mm 88.1mm 44mm
RS Stock No. 763-1058
Mfr. Part No.EU5C-SWD-DP
BrandEaton
HK$2,090.00
Each
units
- - - - - SmartWire-DT - - 24 V dc - - 90mm 35mm 127mm