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 827-3760
製造零件編號170ADM39030
HK$2,808.18
單位
170ADM 10 8 Discrete Discrete Modicon Momentum Automation Platform 8 (Output), 10 (Input) - 24 V dc 5 mA - 141.5mm 125mm 47.5mm
RS庫存編號 746-6549
製造零件編號6ES7321-1EL00-0AA0
BrandSiemens
HK$5,113.68
單位
- 32 - Digital - S7-300 Series - - 120 V ac - Input 125mm 40mm 120mm
RS庫存編號 674-1940
製造零件編號TM2DDI8DT
HK$861.89
單位
Twido Series 8 - Digital - Twido Series - - 24 V dc - Input Module 90mm 24mm 70mm
RS庫存編號 855-3256
製造零件編號2692885
HK$2,054.62
單位
IB IL 24 DI 32/HD-2MBD-PAC 32 - Digital - - - - - - - 119.8mm 48.8mm 71.5mm
RS庫存編號 467-737
製造零件編號6GK5784-1AA30-6AA0
BrandSiemens
HK$16,474.40
單位
6GK5 784 - - - - - 3 - 24 V dc, 48 V dc - - 205mm 100mm 20mm
RS庫存編號 889-0987
製造零件編號SNAP-OAC5
BrandOpto 22
HK$533.25
單位
SNAP - 4 - Digital AC Voltage SNAP PAC System 4 - 12 250 V ac 3 A Digital AC Output 82.55mm 18.29mm 90.17mm
RS庫存編號 888-7830
製造零件編號G4IDC24
BrandOpto 22
HK$147.00
單位
G4 - - Digital DC Voltage Digital - - - 10 → 32 V dc, 12 → 32 V ac 50 (Sinking) mA Digital DC Input 48.8mm 12.2mm 41.1mm
RS庫存編號 806-6994
製造零件編號TM3DQ8UG
HK$869.44
單位
TM3 Series - 8 - Transistor Modicon M221, Modicon M241, Modicon M251 - - 24 V 500 mA - 90mm 23.6mm 70mm
RS庫存編號 888-7587
製造零件編號DA4T
BrandOpto 22
HK$1,748.49
單位
- - - - Digital to Voltage - - - 0 5 V dc 25 mA - - - -
RS庫存編號 855-3410
製造零件編號2819587
HK$8,515.59
單位
IB IL EC AR 48/10A-PAC 3 - - - - - - - - - 166mm 97.6mm 85mm
RS庫存編號 855-3290
製造零件編號2701152
HK$575.09
單位
IB IL 24 DI 4-XC-PAC 4 - Digital - - - - - - - 140.5mm 12.2mm 71.5mm
RS庫存編號 855-1452
製造零件編號2897606
HK$5,563.12
單位
IB IL TEMP 4/8 RTD/EF-2MBD-PAC 8 - Analogue - - - - 24 V dc - - 136.8mm 48.8mm 71.5mm
RS庫存編號 770-2532
製造零件編號TM5SDO12TK
HK$1,601.60
單位
M258 - - - - M258 PLC Series - - - - - - - -
RS庫存編號 763-1083
製造零件編號EU5E-SWD-4D2R
BrandEaton
HK$788.90
單位
- 4 2 Digital Analogue, Relay SmartWire-DT - - 24 V dc 3 A - 90mm 35mm 101mm
RS庫存編號 770-2517
製造零件編號TM5SDI2A
HK$480.48
單位
TM5 2 - Digital - Modicon LMC058, Modicon M258 - - 100 240 V ac - - 99mm 12.5mm 75mm
RS庫存編號 662-3511
製造零件編號6ES7131-4BB01-0AA0
BrandSiemens
HK$192.31
單位
SIMATIC ET 200S 2 - Digital - SIMATIC ET 200S Series 2 - 24 V dc - - 81mm 15mm 52mm
RS庫存編號 888-7515
製造零件編號AD3T
BrandOpto 22
HK$1,762.00
單位
- - - Analogue Current - - 1 - - - Analogue Input - - -
RS庫存編號 667-9217
製造零件編號750-340
BrandWago
HK$4,291.80
單位
750 Series 32 32 Analogue, Digital Analogue, Digital 750 Series 64 - 24 V - - - - -
RS庫存編號 715-8935
製造零件編號GHQ6310074R0111
BrandABB
HK$617.30
單位
- - - - - - - - 24 V dc - - - - -
RS庫存編號 136-2796
製造零件編號NXAD2203
BrandOmron
HK$1,671.78
單位
NX 2 - Analogue - CJ PLC, EtherCAT Coupler Unit, NX Series CPU Unit 2 (Input) - - - Input 12mm 71mm 100mm