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 719-1936
製造零件編號750-1504
BrandWago
HK$1,091.57
單位
I/O SYSTEM 750 - 16 (Channel) - Digital 750 Series - - 24 V dc - Output Module 67mm 12mm 100mm
RS庫存編號 719-1942
製造零件編號750-555
BrandWago
HK$1,958.50
單位
I/O SYSTEM 750 - 4 (Channel) - Analogue 750 Series - - - - Output Module 100mm 12mm 64mm
RS庫存編號 806-6976
製造零件編號TM3DM8R
HK$831.68
單位
TM3 Series 4 4 - Relay Modicon M221, Modicon M241, Modicon M251 8 - 24 → 240 V 2 A - 90mm 23.6mm 70mm
RS庫存編號 806-6890
製造零件編號TMC2AQ2V
HK$693.06
單位
Modicon M221 2 - Analogue Current Modicon M221 - - 24 V dc 20 mA - - - -
RS庫存編號 445-7450
製造零件編號AC5211
HK$1,121.21
單位
- 2 2 Digital Digital - 4 - 18 → 30 V dc - - - - -
RS庫存編號 719-1945
製造零件編號750-1405
BrandWago
HK$960.60
單位
I/O SYSTEM 750 16 (Channel) - Digital - 750 Series - - 24 V dc - Input Module 67mm 12mm 100mm
RS庫存編號 528-0649
製造零件編號2832933
HK$5,173.10
單位
FL SWITCH SF 6TX/2FX 6 - - - - - - 24 V dc - - 115.3mm 135mm 30mm
RS庫存編號 662-3561
製造零件編號6ES7138-4CA01-0AA0
BrandSiemens
HK$143.34
單位
ET200S - - - Current, Potential, Voltage ET200S Series - - 24 V dc - Power Module 81mm 15mm 52mm
RS庫存編號 453-2551
製造零件編號6ES7332-5HD01-0AB0
BrandSiemens
HK$5,395.43
單位
SIMATIC S7-300 Series - 4 - Analogue SIMATIC S7-300 Series 4 - 24 V dc - - 125mm 40mm 120mm
RS庫存編號 539-0774
製造零件編號FX3U-4AD-TC-ADP
BrandMitsubishi
HK$3,468.35
單位
FX3U Series 4 - Analogue, J Type, K Type Digital, J Type, K Type FX3U Series - - 5 V dc, 24 V dc - Analogue Temperature Input Adapter 106mm 17.6mm 89.5mm
RS庫存編號 281-2085
製造零件編號TSXDEZ12D2K
HK$2,716.16
單位
Modicon TSX Micro 12 (Channel) - Discrete - Modicon TSX 12 - 24 V dc - - - - -
RS庫存編號 455-6923
製造零件編號QX10
BrandMitsubishi
HK$1,302.48
單位
MELSEC Q 16 - Digital - MELSEC Q Series 16 - 100 → 120 V ac - - 98mm 27.4mm 90mm
RS庫存編號 806-6893
製造零件編號TMC2AQ2C
HK$693.06
單位
Modicon M221 2 - Analogue Current Modicon M221 - - 24 V dc 20 mA - - - -
RS庫存編號 662-3494
製造零件編號6ES7132-4BD02-0AA0
BrandSiemens
HK$418.59
單位
SIMATIC ET 200S - 4 - Digital SIMATIC ET 200S Series 4 - 24 V dc 500 mA - 81mm 15mm 52mm
RS庫存編號 820-1024
製造零件編號TM2AMM6HT
HK$3,103.88
單位
- - - - - Megelis XBT GC - - - - - - - -
RS庫存編號 662-3595
製造零件編號6ES7134-4GB01-0AB0
BrandSiemens
HK$1,384.32
單位
SIMATIC ET 200S 2 - Analogue - SIMATIC ET 200S Series 2 - 24 V dc - - 81mm 15mm 52mm
RS庫存編號 453-2646
製造零件編號6ES7322-5HF00-0AB0
BrandSiemens
HK$2,366.77
單位
SIMATIC S7-300 Series - 8 - Digital, Relay S7-300 Series 8 - 24 V dc, 24 → 240 V ac 5 A - 125mm 40mm 120mm
RS庫存編號 674-1962
製造零件編號TM2DRA16RT
HK$2,036.60
單位
Modicon M238, Twido Series - 16 - Digital Modicon M238, Twido Series - - 230 V ac - Output Module 90mm 24mm 70mm
RS庫存編號 787-7967
製造零件編號6ES7223-1BL32-0XB0
BrandSiemens
HK$2,435.78
單位
SM 1223 16 16 Digital Digital SIMATIC S7-1200 Series 32 - 24 V dc 500 mA - 100mm 70mm 75mm
RS庫存編號 510-1423
製造零件編號CJ1W-DA041
BrandOmron
HK$5,848.90
單位
CJ Series - 4 - Analogue CJ Series 4 - 24 V dc 12 mA - 90mm 31mm 65mm