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. 698-7691
Mfr. Part No.1769-IF4XOF2
£378.00
Each
Units
PLC I/O Module 1769 Series CompactLogix - 118 x 35 x 87 mm Analogue, Differential, Transistor - Analogue 6 - 0 → 20 mA +60°C - - -
RS Stock No. 401-488
Mfr. Part No.CP1W-20EDT1
BrandOmron
£178.90
Each
Units
PLC Expansion Module PLC Module - 90 x 86 x 50 mm Voltage - Transistor - - - - - - -
RS Stock No. 453-2624
Mfr. Part No.6ES7322-1BL00-0AA0
BrandSiemens
£509.00
Each
Units
PLC I/O Module S7-300 Series SIMATIC 125 x 40 x 120 mm - - Digital 32 - 500 mA - - - -
RS Stock No. 788-7006
Mfr. Part No.7MH4960-2AA01
BrandSiemens
£548.00
Each
Units
PLC Expansion Module S7-1200 Series - 70 x 75 x 100 mm Digital - Analogue, Digital - - - - - - -
RS Stock No. 751-1298
Mfr. Part No.1762-OF4
£286.00
Each
Units
PLC I/O Module MicroLogix 1100 Series - 90 x 40 x 87 mm Analogue - - 1 - 4 → 20 mA +65°C - - -
RS Stock No. 781-6912
Mfr. Part No.FX2N-8AD
BrandMitsubishi
£501.55
Each
Units
PLC Expansion Module FX2N Series - 105 x 75 x 75 mm Analogue - Digital - - - - - - -
RS Stock No. 751-1295
Mfr. Part No.1763-L16DWD
£571.00
Each
Units
PLC I/O Module MicroLogix 1100 Series - - Analogue - Relay 6 - - - - - -
RS Stock No. 512-5895
Mfr. Part No.CJ1W-OC211
BrandOmron
£258.10
Each
Units
PLC I/O Module SYSMAC CJ Series - 89 x 31 x 95.4 mm - - Digital, Relay 16 - 2 A - - - -
RS Stock No. 455-6759
Mfr. Part No.Q312B-E
BrandMitsubishi
£235.00
Each
Units
- MELSEC Q Series - - - DIN Rail - - - - +55°C - - -
RS Stock No. 455-6737
Mfr. Part No.Q38B-E
BrandMitsubishi
£196.50
Each
Units
- MELSEC Q Series - - - DIN Rail - - - - +55°C - - -
RS Stock No. 453-2567
Mfr. Part No.6ES7390-1AF30-0AA0
BrandSiemens
£42.00
Each
Units
Mounting Rail SIMATIC S7-300 Series - - - - - - - - - - - -
RS Stock No. 469-2271
Mfr. Part No.SR2SFT01
£23.79
Each
Units
PLC Programming Software Zelio Logic 2 - - - - - - - - - - - -
RS Stock No. 320-9137
Mfr. Part No.FX2N-32ER-ES/UL
BrandMitsubishi
£311.00
Each
Units
PLC I/O Module FX2N Series - 90 x 150 x 87 mm - - - - - - - - - -
RS Stock No. 890-2976
Mfr. Part No.2080-IQ4OB4
£83.50
Each
Units
PLC I/O Module Micro820, Micro830, Micro850 - 62 x 31.5 x 25.3 mm - - - - - - - 24 V dc - -
RS Stock No. 698-7433
Mfr. Part No.1746-A13
£1,160.00
Each
Units
- SLC Series - 171 x 502 x 145 mm - Panel Mount - - - - +60°C - - -
RS Stock No. 698-7354
Mfr. Part No.1746-NO4I
£1,930.00
Each
Units
PLC I/O Module SLC 500 Series - - - - Analogue 4 - 195 mA +60°C - - -
RS Stock No. 698-7717
Mfr. Part No.1769-PB4
£291.00
Each
Units
- Compact I/O Module - 70 x 118 x 87 mm - - - - - 4 A +60°C - - -
RS Stock No. 405-6192
Mfr. Part No.4825 0092
BrandSocomec
£185.67
Each
Units
PLC Expansion Module DIRIS A40, DIRIS A41 - - - - - - - - - - - -
RS Stock No. 698-7366
Mfr. Part No.1746-HSCE
£1,010.00
Each
Units
PLC Expansion Module SLC 500 Series - - Digital - Transistor - - - - - - -
RS Stock No. 750-8668
Mfr. Part No.2080-USBADAPTER
£29.40
Each
Units
USB Adapter Plug Micro810 - - - - - - - - - - - -