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庫存編號 855-3357
製造零件編號2701217
HK$2,465.14
單位
IB IL TEMP 2 RTD-XC-PAC 2 - Analogue - - - - 24 V dc - - - - -
RS庫存編號 459-5423
製造零件編號SRT2OD161
BrandOmron
HK$2,303.22
單位
SRT2 16 - Digital Mosfet, Relay, Transistor SRT2 Series 16 - 24 V dc 300 (Per Point) mA - 105mm 48mm 50mm
RS庫存編號 608-5956
製造零件編號ABE7H16R31
HK$890.00
單位
- - - - - - - - 19 → 30 V dc 0.5 (Per Channel) A, 1.8 (Per Common) A Passive Discrete I/O Sub-Base - 125mm -
RS庫存編號 893-0678
製造零件編號1315240000
BrandWeidmuller
HK$570.43
單位
- - 8 - Digital - 8 - - 4 (Per Module) A, 500 (Per Channel) mA Digital Output 120mm 11.5mm 76mm
RS庫存編號 868-7374
製造零件編號750-517
BrandWago
HK$502.90
單位
750 - 2 Digital Relay - 2 (Output) - - 1 A @ 250 V ac, 1 A @ 40 V dc - 64mm 12mm 100mm
RS庫存編號 145-936
製造零件編號CJ1W-DRM21
BrandOmron
HK$6,759.50
單位
- - - - - CJ Series 2048 (Fixed Allocation) - 11 → 25 V dc - - 31mm 90mm 78.7mm
RS庫存編號 888-7476
製造零件編號AD10T2
BrandOpto 22
HK$2,072.64
單位
- - - RTD Digital - 1 - - - Analogue Input - - -
RS庫存編號 409-808
製造零件編號Q62DAN
HK$3,714.50
單位
MELSEC Q 2 2 (Channel) Digital Analogue MELSEC Q Series 4 - 24 V dc - Analogue Digital Converter 98mm 27.4mm 112mm
RS庫存編號 868-7371
製造零件編號750-616
BrandWago
HK$131.10
單位
750 - - - - - - - - - - 64mm 12mm 100mm
RS庫存編號 2509667615
製造零件編號AT-FM-2A
HK$2,732.09
單位
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RS庫存編號 2509665388
製造零件編號ATK-VP6
HK$5,003.04
單位
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