PLC Accessories

PLC accessories are devices and gadgets required for the optimum performance of a programmable logic controller. These accessories include interface splitter boxes, communication cassettes and front connectors. The type of PLC you're using will determine the accessories needed.

Types of PLC accessories

A programmable logic controller receives and transmits electronic signals in any kind of electrical system. Because of this flexibility in interfacing, there are a wide range of accessories that suit different controllers. As PLC's come in various sizes, the accessories needed depend on various factors such as the input/output requirements, cable length and range.

  • Cables and connectors - available in a wide range including HMI, USB and ethernet connectors and cables.
  • Expansion modules - are the ideal solution for the acquisition and management of applications. They read and condition data from strain gauge load and communicate basic weight data back to the processor.
  • I/O modules - are one of the three core components that operate a PLC. I/O refers to input/output. PLC I/O modules act as messengers between a processor and an I/O device.
  • Power supplies - Some power supplies are embedded with switches for selecting a particular programming mode or protecting the memory. A low DC voltage output powers the various modules as well as the integral battery.
  • Programming software - is the collective term referring to the data and instructions provided to a PLC via various types of programming languages. These instructions are executed by the plug-in time switches (CPU) to operate, monitor and control machinery and equipment.
  • Racks and enclosures - are the perfect solution to mounting the modular components that hold everything together within a programmable logic controller. They're available in different sizes and mounting types including DIN rail.
  • Training manuals - offer a clear, visual explanation of the system and processes.

How to choose the right PLC accessories

Accessories for PLCs can be chosen depending on the application you need them for. For example, water treatment devices will require different PLC accessories to metallurgy systems. The range of accessories includes batteries, cables, connectors and adapters. A battery backup is used by some to protect valuable memory and data in the event of a power outage.


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Description Price Accessory Type For Use With Range Dimensions Input Type Mounting Type Output Type Number of I/O Number of Outputs Output Current Maximum Operating Temperature Supply Voltage Application Cable Length
RS Stock No. 806-6944
Mfr. Part No.TM3DQ8R
TWD6,330.00
Each
units
PLC I/O Module Modicon M221, Modicon M241, Modicon M251 - 90 x 23.6 x 70 mm - - Relay - - 2 A - - - -
RS Stock No. 746-6104
Mfr. Part No.3RX9501-0BA00
BrandSiemens
TWD9,671.00
Each
units
- AS-I Power Supply Unit - 125 x 50 x 125 mm - - - - - 3 A - - - -
RS Stock No. 806-7020
Mfr. Part No.TM3AI8
TWD12,223.00
Each
units
PLC I/O Module Modicon M221, Modicon M241, Modicon M251 - 90 x 23.6 x 70 mm Current, Voltage - - - - - - - - -
RS Stock No. 877-2441
Mfr. Part No.GX Works3 V01-2L0C-E
BrandMitsubishi
TWD59,338.00
Each
units
PLC Programming Software MELSEC iQ-F Series Programmable Controllers, MELSEC iQ-R Series Programmable Controllers - - - - - - - - - - - -
RS Stock No. 806-7036
Mfr. Part No.TM3AQ2G
TWD14,235.00
Each
units
PLC I/O Module Modicon M221, Modicon M241, Modicon M251 - 90 x 23.6 x 70 mm - - Current, Voltage - - 0 → 20 mA - - - -
RS Stock No. 662-3577
Mfr. Part No.6ES7131-4BF00-0AA0
BrandSiemens
TWD2,129.00
Each
units
PLC I/O Module SIMATIC ET 200S Series - 81 x 15 x 52 mm Digital - - 8 - - - - - -
RS Stock No. 860-3701
Mfr. Part No.2296919
TWD1,212.00
Each
units
Cable & Connector Siemens Top Connect - - - - - - - - - - - 500mm
RS Stock No. 662-3602
Mfr. Part No.6ES7193-4CD30-0AA0
BrandSiemens
TWD377.00
Each
units
Terminal ET 200S Power Modules - 132 x 15 x 43 mm - - - - - - - - - -
RS Stock No. 612-9084
Mfr. Part No.6ES7334-0CE01-0AA0
BrandSiemens
TWD18,271.00
Each
units
PLC I/O Module SIMATIC S7-300 Series SIMATIC 125 x 40 x 120 mm Analogue - Analogue 6 - - - - - -
RS Stock No. 455-6664
Mfr. Part No.Q63P
BrandMitsubishi
TWD10,710.00
Each
units
- MELSEC Q Series - 55.2 x 98 x 90 mm - - - - - 6 A - - - -
RS Stock No. 455-6872
Mfr. Part No.QG60
BrandMitsubishi
TWD820.00
Each
units
Cover PLC Blanking Module - - - - - - - - - - - -
RS Stock No. 539-0904
Mfr. Part No.FX3U-CNV-BD
BrandMitsubishi
TWD1,169.00
Each
units
Communication Module FX Series - - - - - - - - - - - -
RS Stock No. 875-5705
Mfr. Part No.FX5-16EYR/ES
BrandMitsubishi
TWD9,048.00
Each
units
PLC I/O Module FX5U CPU Module, FX5UC CPU Module - 40 x 90 x 83 mm - Panel Mount Relay, Transistor - - - - 5 V dc, 24 V dc - -
RS Stock No. 746-6643
Mfr. Part No.6ES7331-7TF01-0AB0
BrandSiemens
TWD43,727.00
Each
units
- ET 200M - 125 x 40 x 117 mm Analogue - - - - - - - - -
RS Stock No. 787-7945
Mfr. Part No.6ES7221-1BH32-0XB0
BrandSiemens
TWD6,125.00
Each
units
PLC I/O Module SIMATIC S7-1200 Series SIMATIC 100 x 45 x 75 mm Digital - - - - - +70°C - - -
RS Stock No. 806-7017
Mfr. Part No.TM3DI8A
TWD6,022.00
Each
units
PLC I/O Module Modicon M221, Modicon M241, Modicon M251 - 90 x 23.6 x 70 mm Digital - - - - - - - - -
RS Stock No. 455-6692
Mfr. Part No.QC06B
BrandMitsubishi
TWD3,016.00
Each
units
Cable QC Series - - - - - - - - - - - -
RS Stock No. 806-7014
Mfr. Part No.TM3AI2HG
TWD10,018.00
Each
units
PLC I/O Module Modicon M221, Modicon M241, Modicon M251 - 90 x 23.6 x 70 mm Current, Voltage - - - - - - - - -
RS Stock No. 510-1417
Mfr. Part No.CJ1W-AD081
BrandOmron
TWD28,981.00
Each
units
PLC I/O Module SYSMAC CJ Series, SYSMAC CP1H Series, SYSMAC CP1L Series - 90 x 31 x 65 mm Analogue - - 8 - - - - - -
RS Stock No. 715-8917
Mfr. Part No.2CDG110025R0011
BrandABB
TWD17,853.00
Each
units
PLC I/O Module - - - - - - - - - - - - -