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.


...
Read more Read less

Filters

Viewing 101 - 120 of 657 products
Results per page
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 Stock No. 434-1850
Mfr. Part No.6ES7231-7PD22-0XA0
BrandSiemens
$1,413.80
Each
units
S7-200 4 - Analogue - S7-231 Series - - 24 V dc - Input Module 80mm 71.2mm 62mm
RS Stock No. 615-2387
Mfr. Part No.SR2COM01
$284.82
Each
units
Zelio Logic - - - - - - - 12 → 24 V dc - Relay 107.6mm 72mm 59.5mm
RS Stock No. 893-6705
Mfr. Part No.1394390000
BrandWeidmuller
$277.15
Each
units
- 4 - Analogue Voltage - - 4 - 0 → 10 V, 0 → 5 V, 1 → 5 V, -10 → 10 V, 2 → 10 V - Analogue Input 120mm 11.5mm 76mm
RS Stock No. 746-6606
Mfr. Part No.6ES7323-1BL00-0AA0
BrandSiemens
$1,126.98
Each
units
- 16 16 Digital Digital S7-300 Series - - 24 V dc - - 125mm 40mm 120mm
RS Stock No. 662-3586
Mfr. Part No.6ES7134-4GB11-0AB0
BrandSiemens
$435.65
Each
units
SIMATIC ET 200S 2 - Analogue - SIMATIC ET 200S Series 2 - 24 V dc - - 81mm 15mm 52mm
RS Stock No. 806-7023
Mfr. Part No.TM3AI4
$331.93
Each
units
TM3 Series 4 - Current, Voltage - Modicon M221, Modicon M241, Modicon M251 - - -10 → 10 V dc - - 90mm 23.6mm 70mm
RS Stock No. 662-3539
Mfr. Part No.6ES7138-4AA01-0AA0
BrandSiemens
$114.24
Each
units
ET200S - - - - ET200S Series - - 24 V dc - Reserve Module 15mm 81mm 52mm
RS Stock No. 888-7997
Mfr. Part No.G4PB24
BrandOpto 22
$274.41
Each
units
G4 - - - - G4 I/O Modules 24 - - - - 190.5mm 158.8mm 58.9mm
RS Stock No. 623-7680
Mfr. Part No.VBA-4E3A-KE-ZE/R
$249.00
Each
units
- 4 3 - - - 7 - 21 → 31 V dc - - 102mm 22.5mm 99mm
RS Stock No. 528-0453
Mfr. Part No.2862343
$906.58
Each
units
ILB IB 24 DI32 32 - Digital - INTERBUS 32 - 24 V dc - - 140.5mm 156mm 57mm
RS Stock No. 787-7986
Mfr. Part No.6ES7234-4HE32-0XB0
BrandSiemens
$663.92
Each
units
SM 1234 4 2 Analogue Analogue SIMATIC S7-1200 Series 6 - 24 V dc 0 → 20 mA - 100mm 45mm 75mm
RS Stock No. 512-5902
Mfr. Part No.CJ1W-OD212
BrandOmron
$587.29
Each
units
SYSMAC CJ Series - 16 - Digital, Transistor SYSMAC CJ Series 16 - 24 V dc 500 mA - 89mm 31mm 95.4mm
RS Stock No. 453-2630
Mfr. Part No.6ES7322-1HH01-0AA0
BrandSiemens
$904.05
Each
units
SIMATIC S7-300 Series - 16 - Digital, Relay S7-300 Series - - 24 → 240 V ac, 24 V dc 2 A - 125mm 40mm 120mm
RS Stock No. 746-6602
Mfr. Part No.6ES7323-1BH01-0AA0
BrandSiemens
$569.64
Each
units
- 8 8 Digital Digital S7-300 Series - - 24 V dc - - 125mm 40mm 120mm
RS Stock No. 806-7032
Mfr. Part No.TM3AQ2
$280.54
Each
units
TM3 Series - 2 - Current, Voltage Modicon M221, Modicon M241, Modicon M251 - - -10 → 10 V dc 0 → 20 mA - 90mm 23.6mm 70mm
RS Stock No. 735-2890
Mfr. Part No.6ES7231-5QA30-0XB0
BrandSiemens
$199.33
Each
units
SIMATIC S7-1200 1 - Analogue - SIMATIC S7-1200 Series 1 - 5 V dc - - 62mm 38mm 21mm
RS Stock No. 510-9196
Mfr. Part No.701550(3041/3046)/2 (Relais (Wechsler))
BrandJumo
$65.89
Each
units
- - 1 - Relay 703041 Series, 703042 Series, 703043 Series, 703044 Series - - - - Relay Output - - -
RS Stock No. 888-7846
Mfr. Part No.G4IDC5D
BrandOpto 22
$55.28
Each
units
G4 - - Digital DC Voltage Digital - - - 2.5 → 28 V dc 50 (Sinking) mA Digital DC Input 48.8mm 12.2mm 41.1mm
RS Stock No. 455-6945
Mfr. Part No.QY81P
BrandMitsubishi
$866.40
Each
units
MELSEC Q - 32 - Digital, Transistor MELSEC Q Series 32 - 12 → 24 V dc - - 98mm 27.4mm 90mm
RS Stock No. 787-7949
Mfr. Part No.6ES7222-1BF32-0XB0
BrandSiemens
$190.78
Each
units
SM 1222 - 8 Digital Digital SIMATIC S7-1200 Series - - 24 V dc 500 mA - 100mm 45mm 75mm
Related Products
STEGOJET Multi-Directional Enclosure Cooling Fan - SJ 019 ...
Description:
STEGOJET Multi-Directional Enclosure Cooling Fan - SJ 019 Series The STEGOJET is a compact device featuring a powerful built-in fan It allows precision cooling of heat sources and the efficient airflow prevents the formation of heat pockets. The design of ...
The Rev Pi DI, like its counterparts, the ...
Description:
The Rev Pi DI, like its counterparts, the DO/DIO, features a 28 pin connector on the front side of the module (2 rows of 14 male pins) and comes with female connectors with spring clip contacts up to 15mm². The ...
Introducing Rev Pi AIO, the latest in industrial ...
Description:
Introducing Rev Pi AIO, the latest in industrial computing from Kunbus Using a Raspberry Pi Compute Module, the system is able to perform high-performance tasks and applications with ease and accuracy.Expand your Rev Pi Core products with a Rev Pi ...
Inline function terminal, for serial data transmission, complete ...
Description:
Inline function terminal, for serial data transmission, complete with accessories (connector and labeling field), 1 serial input and output channel in design, pure process data communication