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 889-0889
製造零件編號SNAP-IDC-32DN
BrandOpto 22
HK$3,002.04
單位
- - - - - - - - - - - 18.29mm - 82.55mm
RS庫存編號 124-3354
製造零件編號2906603
HK$247.92
單位
IOA REL 24V DI/BFI/1.0A/EX 1 (Digital) - Digital Relay - Field Devices 1 (Input) - - - I/O Module 10.3mm 64.2mm 72.9mm
RS庫存編號 145-936
製造零件編號CJ1W-DRM21
BrandOmron
HK$8,311.07
單位
- - - - - CJ Series 2048 (Fixed Allocation) - 11 25 V dc - - 31mm 90mm 78.7mm
RS庫存編號 662-3577
製造零件編號6ES7131-4BF00-0AA0
BrandSiemens
HK$549.12
單位
SIMATIC ET 200S 8 - Digital - SIMATIC ET 200S Series 8 - 24 V dc - - 81mm 15mm 52mm
RS庫存編號 818-7120
製造零件編號88982213
BrandCrouzet
HK$1,900.11
單位
E10A 6 4 0 10 V, Configurable Digital Analogue 0 10 V, PWM Em4 Series 4 (Output), 6 (Input) - 24 V dc 500 mA - 108.1mm 42.5mm 60.3mm
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 705-4887
製造零件編號FX3G-2AD-BD
BrandMitsubishi
HK$1,716.00
單位
MELSEC FX1N, MELSEC FX1S, MELSEC FX2N, MELSEC FX2NC, MELSEC FX3G, MELSEC FX3U, MELSEC FX3UC 2 - Analogue - MELSEC FX3G Series 2 - 0 10 V dc 4 20 mA - - - -
RS庫存編號 889-0905
製造零件編號SNAP-IDC5-FAST-A
BrandOpto 22
HK$755.85
單位
- - - - - - - - - - - 18.29mm - 82.55mm
RS庫存編號 662-3606
製造零件編號6ES7151-1CA00-3BL0
BrandSiemens
HK$6,292.00
單位
SIMATIC ET 200S 16 16 Digital Digital SIMATIC ET 200S Series 32 - 24 V dc 500 mA - 81mm 120mm 58mm
RS庫存編號 770-2475
製造零件編號TM5SAI4H
HK$6,229.32
單位
TM5 4 - Analogue - Modicon LMC058, Modicon M258 - - 24 V dc 63 mA - 99mm 12.5mm 75mm
RS庫存編號 667-9258
製造零件編號750-501
BrandWago
HK$336.29
單位
I/O SYSTEM 750 - 2 (Channel) - Digital 750 Series - - 24 V dc - Output Module 100mm 12mm 64mm
RS庫存編號 888-7842
製造零件編號G4IDC5B
BrandOpto 22
HK$159.36
單位
G4 - - Digital DC Voltage Digital - - - 4 16 V ac/dc 50 (Sinking) mA Digital DC Input 48.8mm 12.2mm 41.1mm
RS庫存編號 770-2532
製造零件編號TM5SDO12TK
HK$1,910.00
單位
M258 - - - - M258 PLC Series - - - - - - - -
RS庫存編號 810-4150
製造零件編號6ES7231-5QF32-0XB0
BrandSiemens
HK$4,085.78
單位
SM 1231 8 - Analogue - CPU 1211, CPU 1212, CPU 1214 8 - 24 V dc - - 100mm 45mm 75mm
RS庫存編號 893-7799
製造零件編號2700608
HK$3,662.40
單位
AXL F DOR4/2 AC/220DC 1F - 4 - Relay Axioline F Station 4 - 230 V ac 8 (Channel) A, 32 (Module) A Digital Output 53.6mm 126.1mm 54mm
RS庫存編號 487-999
製造零件編號AC5209
HK$1,434.20
單位
- 4 4 Digital Digital - 8 - 18 30 V dc - - - - -
RS庫存編號 893-6770
製造零件編號1334790000
BrandWeidmuller
HK$538.20
單位
- - - - - Remote I/O - - - - Auxiliary Module 120mm 11.5mm 76mm
RS庫存編號 124-3351
製造零件編號2906598
HK$46.55
單位
IOA FEED-THRU/EX 1 1 Analogue Analogue - - - - - I/O Module 10.3mm 64.2mm 72.9mm
RS庫存編號 888-7997
製造零件編號G4PB24
BrandOpto 22
HK$1,441.13
單位
G4 - - - - G4 I/O Modules 24 - - - - 190.5mm 158.8mm 58.9mm
RS庫存編號 696-2137
製造零件編號PSI-MODEM-GSM/ETH
HK$10,635.90
單位
PSI-MODEM-GSM/ETH - - - - - - - 24 V dc - - 99mm 35mm 114.5mm