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 Series Input Type Termination Application Mounting Type Output Type Cable Length Number of I/O Hazardous Area Certification Number of Outputs
RS Stock No. 612-9084
Mfr. Part No.6ES7334-0CE01-0AA0
BrandSiemens
MYR2,889.42
Each
units
PLC I/O Module SIMATIC S7-300 Series SIMATIC 125 x 40 x 120 mm PSI-DATA/BASIC-MODEM/RS232 Analogue - - - Analogue - - - -
RS Stock No. 148-082
Mfr. Part No.BMXDDO3202K
MYR1,977.71
Each
units
PLC I/O Module M340 Series - - M340 - - - - Discrete, Transistor - - - -
RS Stock No. 901-0826
Mfr. Part No.2903805
MYR2,569.45
Each
units
Interface Unit PSI Modem SMS Relay - 71.6 x 62.2 x 89.7 mm - Analogue, Digital - Mobile Communication DIN Rail Relay - - - -
RS Stock No. 917-6395
BrandRS PRO
MYR107.89
Each
units
USB Cable Logic Module - - - - Plug-In Automation, Commercial, Industrial - - - - - -
RS Stock No. 453-2517
Mfr. Part No.6ES7321-1BH02-0AA0
BrandSiemens
MYR1,227.30
Each
units
Digital Input Expansion Module SIMATIC S7-300 Series SIMATIC 125 x 40 x 120 mm SIMATIC S7-300 Series Digital - - - - - - - -
RS Stock No. 815-5555
Mfr. Part No.FP2-Y64T
BrandPanasonic
MYR2,055.07
Each
units
PLC I/O Module FP2 Series - - IB IL IFS-MA-PAC - - - - NPN - - - -
RS Stock No. 705-4925
Mfr. Part No.FX3U-4AD
BrandMitsubishi
MYR1,566.86
Each
units
PLC I/O Module MELSEC FX Series - 90 x 55 x 87 mm - Analogue - - - - - - - -
RS Stock No. 365-2222
Mfr. Part No.CPM2CCN111
BrandOmron
MYR523.53
Each
units
Cable CPM Series - - - - - - - - - - - -
RS Stock No. 611-9548
Mfr. Part No.FX2N-8EX-ES/UL
BrandMitsubishi
MYR780.59
Each
units
PLC Expansion Module FX3U Series - 90 x 350 x 87 mm - - - - - Digital, Relay, Transistor - - - -
RS Stock No. 662-3167
Mfr. Part No.6ES7131-4BD01-0AA0
BrandSiemens
MYR198.30
Each
units
PLC I/O Module SIMATIC ET 200S Series SIMATIC 81 x 15 x 52 mm 6ES7 Digital - - - - - - - -
RS Stock No. 148-032
Mfr. Part No.BMXCPS2010
MYR1,310.32
Each
units
PLC Power Supply Modicon M340 - - Modicon M340 - - - - - - - - -
RS Stock No. 652-4085
Mfr. Part No.QJ71C24N-R2
BrandMitsubishi
MYR2,745.65
Each
units
Counter MELSEC Q Series - 27.4 x 98 x 90 mm - - - - - - - - - -
RS Stock No. 888-7984
Mfr. Part No.G4PB16I
BrandOpto 22
MYR851.61
Each
units
PLC I/O Module G4 I/O Modules - 228.6 x 101.6 x 58.9 mm IB ST 24 AI 4/EF - - Communication Panel Mount - - - - -
RS Stock No. 401-539
Mfr. Part No.CP1W-16ER
BrandOmron
MYR1,142.44
Each
units
PLC Expansion Module PLC Module - 90 x 86 x 50 mm - - - - - Relay - - - -
RS Stock No. 510-1524
Mfr. Part No.XW2D40G6
BrandOmron
MYR295.96
Each
units
Terminal Block CJ1M Series - - - - - - - - - - - -
RS Stock No. 510-1704
Mfr. Part No.CJ1W-PD022
BrandOmron
MYR817.03
Each
units
PLC Power Supply CJ1M Series - 81.6 x 90 x 27 mm CJ1W - - - - - - - - -
RS Stock No. 146-046
Mfr. Part No.GRT1-PRT
BrandOmron
MYR2,066.78
Each
units
PLC Expansion Module Profibus, SmartSlice I/O Units - 90 x 58 x 70 mm - - - - - - - - - -
RS Stock No. 674-1912
Mfr. Part No.TM2AMI2HT
MYR971.29
Each
units
PLC I/O Module Modicon M238, Twido Series - 23.5 x 70 x 90 mm TM5 Analogue - - - - - - - -
RS Stock No. 746-5340
Mfr. Part No.6XV1440-4AH20
BrandSiemens
MYR1,514.84
Each
units
Cable 277 Series Mobile Panel - - - - - - - - - - - -
RS Stock No. 459-5439
Mfr. Part No.SRT2ROC08
BrandOmron
MYR1,873.92
Each
units
PLC I/O Module SRT2 Series - 50 x 100 x 50 mm - - - - - Relay, Voltage - 8 - -