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 512-5930
製造零件編號CJ1W-SCU41
BrandOmron
HK$6,122.45
單位
CJ Series - - - - CJ Series - - - - - - - -
RS庫存編號 453-2630
製造零件編號6ES7322-1HH01-0AA0
BrandSiemens
HK$3,480.92
單位
SIMATIC S7-300 Series - 16 - Digital, Relay S7-300 Series - - 24 V dc, 24 → 240 V ac 2 A - 125mm 40mm 120mm
RS庫存編號 434-1866
製造零件編號6ES7277-0AA22-0XA0
BrandSiemens
HK$5,009.01
單位
SIMATIC S7-200 Series - - - - S7-200 Series - - 24 V dc - Slave Module - - -
RS庫存編號 443-0146
製造零件編號EASY819-DC-RC
BrandEaton
HK$3,144.50
單位
Easy 800 Series 12 6 Digital Relay Easy 800 Series, Easy 819 18 - 20.4 → 28.8 V dc - - 90mm 107.5mm 72mm
RS庫存編號 510-1417
製造零件編號CJ1W-AD081
BrandOmron
HK$6,699.00
單位
SYSMAC CJ Series, SYSMAC CP1H, SYSMAC CP1L 8 - Analogue - SYSMAC CJ Series, SYSMAC CP1H Series, SYSMAC CP1L Series 8 - -10 → 10 V, 0 → 10 V, 0 → 5 V, 1 → 5 V - - 90mm 31mm 65mm
RS庫存編號 612-9078
製造零件編號6ES7331-7HF01-0AB0
BrandSiemens
HK$8,022.00
單位
SIMATIC S7-300 Series 8 - Analogue - SIMATIC S7-300 Series 8 - 24 V dc - - 125mm 40mm 120mm
RS庫存編號 510-4494
製造零件編號CJ1WOC211SL
BrandOmron
HK$2,594.90
單位
CJ2 - 16 - Digital, Relay CJ2 Series - - 24 V dc, 250 V ac 2 A - 90mm 31mm 89mm
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 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 705-4925
製造零件編號FX3U-4AD
BrandMitsubishi
HK$2,563.10
單位
MELSEC FX 4 - Analogue - MELSEC FX Series 4 - 5 V dc, 24 V dc - - 90mm 55mm 87mm
RS庫存編號 508-3921
製造零件編號750455
BrandWago
HK$2,035.65
單位
I/O SYSTEM 750 4 (Channel) - Analogue - 750 Series - - - - Input Module 100mm 12mm 64mm
RS庫存編號 828-5265
製造零件編號6GK5308-2FL10-2AA3
BrandSiemens
HK$23,198.08
單位
6GK5308 - - Current, Voltage Current, Voltage - - - 24 V dc 100 mA - 125mm 120mm 123mm
RS庫存編號 787-7986
製造零件編號6ES7234-4HE32-0XB0
BrandSiemens
HK$2,897.74
單位
SM 1234 4 2 Analogue Analogue SIMATIC S7-1200 Series 6 - 24 V dc 0 → 20 mA - 100mm 45mm 75mm
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 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 320-9143
製造零件編號FX2N-48ER-ES/UL
BrandMitsubishi
HK$4,758.30
單位
FX2N Series 24 24 - - FX2N Series - - 100 → 240 V ac - I/O Module 90mm 150mm 87mm
RS庫存編號 667-9242
製造零件編號750-459
BrandWago
HK$1,731.89
單位
I/O SYSTEM 750 4 (Channel) - Analogue - 750 Series - - 0 → 10 V - Input Module 100mm 12mm 64mm
RS庫存編號 746-5785
製造零件編號6ES7223-3BD30-0XB0
BrandSiemens
HK$614.28
單位
6AG1 Series 2 2 Digital Digital S7-1200 Series 4 - 24 V dc 100 mA - 62mm 38mm 21mm
RS庫存編號 888-7846
製造零件編號G4IDC5D
BrandOpto 22
HK$145.73
單位
G4 - - Digital DC Voltage Digital - - - 2.5 → 28 V dc 50 (Sinking) mA Digital DC Input 48.8mm 12.2mm 41.1mm
RS庫存編號 787-7961
製造零件編號6ES7223-1PL32-0XB0
BrandSiemens
HK$3,180.19
單位
SM 1223 16 16 Digital Relay SIMATIC S7-1200 Series 32 - 24 V dc 2 A - 100mm 70mm 75mm