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 609-8643
製造零件編號TSXCTZ2A
HK$7,614.60
單位
TSX 2 - Voltage - Modicon TSX Micro 2 (Input) - 24 V dc - - - - -
RS庫存編號 147-988
製造零件編號BMXAMI0410
HK$3,865.59
單位
M340 4 - Analogue - M340 Series 4 - 24 V dc - - - - -
RS庫存編號 806-6887
製造零件編號TMC2AI2
HK$913.77
單位
Modicon M221 2 - Analogue Current Modicon M221 - - 24 V dc 20 mA - - - -
RS庫存編號 148-004
製造零件編號BMXAMO0210
HK$3,391.50
單位
M340 - 2 - Analogue M340 Series 2 - 24 V dc - - - - -
RS庫存編號 674-1934
製造零件編號TM2AVO2HT
HK$1,543.50
單位
Modicon M238 - 2 - Analogue Modicon M238 2 - 24 V dc - - 0.9in 2.75in 3.5in
RS庫存編號 674-1952
製造零件編號TM2DDO32TK
HK$1,899.00
單位
Modicon M238, Twido Series - 32 - Digital Modicon M238, Twido Series - - 24 V dc 400 mA Output Module 92.3mm 33.5mm 94.5mm
RS庫存編號 253-2335
製造零件編號TSXDMZ28DR
HK$4,630.74
單位
Modicon TSX Micro 16 12 Discrete Discrete Modicon TSX 28 - 100 → 120 V ac - - - - -
RS庫存編號 806-6904
製造零件編號TMC4AI2
HK$1,039.25
單位
M241 Series 2 - Analogue - Modicon M241 - - 0 → 10 V 0 → 20 mA - - - -
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 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 615-2371
製造零件編號SR2MOD02
HK$4,230.00
單位
- - - - - - - - 12 → 24 V dc - GSM modem 73mm 54.5mm 39.5mm
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 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 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 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 820-1024
製造零件編號TM2AMM6HT
HK$3,103.88
單位
- - - - - Megelis XBT GC - - - - - - - -
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 806-7020
製造零件編號TM3AI8
HK$1,727.62
單位
TM3 Series 8 - Current, Voltage - Modicon M221, Modicon M241, Modicon M251 - - -10 → 10 V dc - - 90mm 23.6mm 70mm
RS庫存編號 674-1937
製造零件編號TM2AMO1HT
HK$1,439.81
單位
Modicon M238, Twido Series - 1 - Analogue Modicon M238, Twido Series - - 24 V dc - Output Module 95.6mm 27.3mm 94.5mm