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 405-6209
製造零件編號4825 0093
BrandSocomec
HK$1,405.90
單位
- - 4 - Analogue - - - - - - - - -
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 320-9109
製造零件編號FX2N-16EX-ES/UL
BrandMitsubishi
HK$1,805.40
單位
FX2N Series 16 - Digital - FX2N Series - - 24 V dc - Input Module 90mm 40mm 87mm
RS庫存編號 674-1912
製造零件編號TM2AMI2HT
HK$1,188.00
單位
Modicon M238, Twido Series 2 - Analogue - Modicon M238, Twido Series - - 24 V dc - Input Module 23.5mm 70mm 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 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 662-3167
製造零件編號6ES7131-4BD01-0AA0
BrandSiemens
HK$307.41
單位
SIMATIC ET 200S 4 - Digital - SIMATIC ET 200S Series 4 - 24 V dc - - 81mm 15mm 52mm
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 719-1942
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 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 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 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 815-5915
製造零件編號FP2-SL2
BrandPanasonic
HK$3,945.46
單位
FP2 Series 128 128 - - FP2 Series 128 - 24 V dc 1.6 A - - - -
RS庫存編號 615-2387
製造零件編號SR2COM01
HK$1,360.00
單位
Zelio Logic - - - - - - - 12 → 24 V dc - Relay 107.6mm 72mm 59.5mm
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 459-5394
製造零件編號SRT2ID161
BrandOmron
HK$1,863.40
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 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 674-1946
製造零件編號TM2DDI32DK
HK$2,068.03
單位
Twido Series 32 - Digital - Twido Series - - 24 V dc - Input Module 92.3mm 33.5mm 94.5mm
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