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 888-7984
製造零件編號G4PB16I
BrandOpto 22
HK$1,376.36
單位
G4 - - - - G4 I/O Modules 16 - - - - 228.6mm 101.6mm 58.9mm
RS庫存編號 508-3943
製造零件編號750461
BrandWago
HK$2,373.67
單位
I/O SYSTEM 750 2 (Channel) - Analogue - 750 Series - - - - Input Module 100mm 12mm 64mm
RS庫存編號 828-5252
製造零件編號6ES7231-4HD32-0XB0
BrandSiemens
HK$1,983.60
單位
6ES7231 4 - Analogue - SIMATIC S7-1200 4 - 24 V dc - - 100mm 45mm 75mm
RS庫存編號 855-3458
製造零件編號2861454
HK$488.67
單位
IB IL 120 PWR IN-PAC - - - - - - - 108 → 135 V ac - - 119.8mm 36.6mm 71.5mm
RS庫存編號 508-3937
製造零件編號750554
BrandWago
HK$2,080.10
單位
I/O SYSTEM 750 - 2 (Channel) - Analogue 750 Series - - - - Output Module 100mm 12mm 64mm
RS庫存編號 893-7846
製造零件編號2701954
HK$9,060.89
單位
IB STME 24 AO 4/EF - 4 - Analogue - 4 - -10 → 10 V dc, 0 → 10 V dc 0 → 20 mA, 4 → 20 mA Analogue Output 118mm 116mm 117mm
RS庫存編號 893-7843
製造零件編號2700839
HK$9,479.42
單位
IB ST 24 AO 4/EF - 4 - Analogue - 4 - -10 → 10 V dc, 0 → 10 V dc 0 → 20 mA, 4 → 20 mA Analogue Output 118mm 116mm 117mm
RS庫存編號 2509665388
製造零件編號ATK-VP6
HK$5,003.04
單位
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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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