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 893-0684
製造零件編號1315540000
BrandWeidmuller
HK$1,168.36
單位
- - - - Digital - - - - 1 (Per Channel) A, 4 (Per Module) A Digital Output 120mm 11.5mm 76mm
RS庫存編號 855-3372
製造零件編號2701389
HK$1,347.95
單位
IB IL AO 2/UI-XC-PAC - 2 - Analogue - - - 24 V dc - - 119.8mm 12.2mm 71.5mm
RS庫存編號 782-1220
製造零件編號IDCM-5
HK$214.28
單位
IDCM - - Digital Digital - 1 - - - - 43.2mm 10.2mm 25.4mm
RS庫存編號 855-1436
製造零件編號2878641
HK$3,875.45
單位
IB IL AI 4/EF-2MBD-PAC 4 - Analogue - - - - 24 V dc - - 136.8mm 48.8mm 71.5mm
RS庫存編號 855-1468
製造零件編號2897952
HK$3,183.27
單位
IB IL AI/TEMP 4 RTD-PAC - - - - - - - - - - 140.5mm 12.2mm 71.5mm
RS庫存編號 539-0768
製造零件編號FX3U-4AD-PT-ADP
BrandMitsubishi
HK$3,468.35
單位
MELSEC FX 4 (PT100) - Analogue Relay, Transistor MELSEC FX Series 4 - 5 → 24 V dc - - 90mm 17.6mm 89.5mm
RS庫存編號 855-3385
製造零件編號2727378
HK$3,317.93
單位
IB IL 400 ELR R-3A - - - Motor - - - 187 → 440 V ac - - 224mm 63mm 109mm
RS庫存編號 835-8827
製造零件編號FC4A-M24BR2
BrandIdec
HK$2,434.92
單位
FC4A 16 8 Sink/Source Relay FC4A Series PLC 24 - 20.4 → 28.8 V dc 7 A - 42.9mm 90mm 71mm
RS庫存編號 125-1092
製造零件編號TMC2PACK01
HK$477.97
單位
Modicon M221 2 - Analogue - Modicon M221C 2 (Input) - 0 → 10 V - Analogue Input Cartridge Module 35mm 15mm 41mm
RS庫存編號 855-3274
製造零件編號2700630
HK$3,827.20
單位
IB IL PB MA-PAC - - - - - - - - - - 119.8mm 48.8mm 71.5mm
RS庫存編號 855-3439
製造零件編號2855648
HK$5,350.40
單位
- 8 - Analogue - - - - 24 V dc - - 119.8mm 48.8mm 71.5mm
RS庫存編號 770-2479
製造零件編號TM5SAI4LK
HK$3,290.00
單位
TM5 - - - - M258 PLC Series - - - - - - - -
RS庫存編號 889-1012
製造零件編號SNAP-ODC-32-SRC
BrandOpto 22
HK$3,404.47
單位
SNAP - 32 - Digital DC Voltage SNAP PAC System 32 - 5 → 60 V dc 250 mA Digital DC Output 82.55mm 18.29mm 82.8mm
RS庫存編號 855-3492
製造零件編號2861894
HK$360.82
單位
IB IL 24 PWR IN/F-D-PAC - - - - - - - 19.2 → 30 V dc - - 119.8mm 12.2mm 71.5mm
RS庫存編號 468-5784
製造零件編號6ES7222-1HD22-0XA0
BrandSiemens
HK$1,558.40
單位
SIMATIC S7-200 Series - 4 - Digital SIMATIC S7-200 Series - - 24 V ac/dc - Output Module - - -
RS庫存編號 735-2884
製造零件編號6ES7231-4HA30-0XB0
BrandSiemens
HK$703.99
單位
SIMATIC S7-1200 1 - Analogue, Differential - SIMATIC S7-1200 Series 1 - 5 V dc - - 62mm 38mm 21mm
RS庫存編號 405-6215
製造零件編號4825 0094
BrandSocomec
HK$2,470.69
單位
- 2 2 - - - 4 - - - - - - -
RS庫存編號 806-6926
製造零件編號TM3DI8G
HK$970.36
單位
TM3 Series 8 - - - Modicon M221, Modicon M241, Modicon M251 - - 24 V - - 90mm 23.6mm 70mm
RS庫存編號 889-0895
製造零件編號SNAP-IDC5
BrandOpto 22
HK$691.05
單位
- - - - - - - - - - - 18.29mm - 82.55mm
RS庫存編號 855-3375
製造零件編號2701927
HK$3,625.38
單位
IB IL MBUS-PAC - - - - - - - - - - 119.8mm 24.4mm 71.5mm