PLCs - Programmable Logic Controllers

A PLC (programmable logic controller) is an industrial digital computer designed for the control of manufacturing processes or robotic devices where reliability control, simple programming and fault diagnosis is necessary. They were originally built to replace electromechanical relay systems in industrial automation.

A CPU (central processing unit) forms part of the PLC system. PLC CPUs are microprocessor-based and act as the electronic circuitry within an industrial computer. They carry out instructions from the computer program, performing basic mathematical, logical, control, input and output operations.

What are PLCs used for?

PLC controllers are important for the correct functioning of machinery in manufacturing and industry. They are used in the automation of electromechanical processes, including control of machinery on assembly lines, amusement rides, or lighting fixtures. PLCs are ideal for applications that require constant monitoring of input devices whilst allowing decisions to be made via a custom program. This ultimately enables it to control an output.

Types of PLCs

Programmable logic controllers are divided into small, medium and large modular categories. Small control systems are robust, compact and mountable on top of or beside the equipment to be controlled. Medium controllers mainly use rack mounting or backplane systems, allowing for simple upgrading via additional function cards. Large systems are necessary for applications where complex control functions are executed, usually in large plants, in machinery requiring constant monitoring, or control of other PLC hardware.

What setups are suitable for programmable logic controllers?

PLCs feature a modular design, making them suitable for use in a wide range of applications. Due to the modular aspect, PLCs can be plugged into numerous setups making them highly versatile.


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Omschrijving Prijs For Use With Manufacturer Series Number of Inputs Number of Digital Inputs Output Type Input Type Number of Analogue Inputs Voltage Category Number of Digital Outputs Supply Voltage Number of Analogue Outputs Interface Kit Included Number of Outputs
RS-stocknr. 917-6370
FabrikantRS PRO
€ 97,20
Each
Aantal stuks
- - 8 - Digital, Relay Analogue, Digital - - - 12 → 24 V dc - - - 4
RS-stocknr. 917-6392
FabrikantRS PRO
€ 37,98
Each
Aantal stuks
RS PRO Logic Modules - 1 - RS485 Protocol (D-), RS485 Protocol (D+), RS485 Protocol (Two Wires) TTL Level - - - 12 → 24 V dc - - - 1
RS-stocknr. 917-6383
FabrikantRS PRO
€ 40,62
Each
Aantal stuks
RS PRO Logic Modules - 1 - RS485 Protocol (D-), RS485 Protocol (D+), RS485 Protocol (Two Wires) TTL Level - - - 110 → 240 V ac - - - 1
RS-stocknr. 917-6361
FabrikantRS PRO
€ 88,02
Each
Aantal stuks
- - 8 - Digital, Relay Digital - - - 110 → 240 V ac - - - 4
RS-stocknr. 917-6399
FabrikantRS PRO
€ 15,02
Each
Aantal stuks
RS PRO Logic Modules - - - - - - - - - - - - -
RS-stocknr. 917-6386
FabrikantRS PRO
€ 53,12
Each
Aantal stuks
RS PRO Logic Modules - 8 - Digital, Relay Digital - - - 110 → 240 V ac - - - 4
RS-stocknr. 917-6389
FabrikantRS PRO
€ 46,15
Each
Aantal stuks
RS PRO Logic Modules - 8 - Digital, Relay Digital - - - 12 → 24 V dc - - - 4
RS-stocknr. 917-6373
FabrikantRS PRO
€ 88,05
Each
Aantal stuks
- - 8 - Digital, Relay Digital - - - 110 → 240 V ac - - - 4
RS-stocknr. 917-6377
FabrikantRS PRO
€ 89,26
Each
Aantal stuks
- - 8 - Digital, Relay Analogue, Digital - - - 12 → 24 V dc - - - 4
RS-stocknr. 864-4538
Fabrikantnummer0850-0600
FabrikantBARTH
€ 127,33
Each
Aantal stuks
STG-600 lococube mini-PLC 10 - PWM, Solid State Analogue, Digital - - - 7 → 32 V dc - - - 9
RS-stocknr. 864-4541
Fabrikantnummer0660-0600
FabrikantBARTH
€ 128,40
Each
Aantal stuks
STG-600 lococube mini-PLC 10 - Mosfet, Solid State Analogue, Digital - - - 7 → 32 V dc - - - 8
RS-stocknr. 862-4471
Fabrikantnummer6ES7214-1AG40-0XB0
FabrikantSiemens
€ 360,00
Each
Aantal stuks
SIMATIC S7-1200 Series S7-1200 14 (Digital Input, 2 switch as Analogue Input) - Digital, Transistor Analogue, Digital - 24 V dc - - - - - 10 (Digital Output, Transistor Output)
RS-stocknr. 539-0689
FabrikantnummerFX3U-32MR/ES
FabrikantMitsubishi
€ 898,30
Each
Aantal stuks
- FX3U 16 - Relay Sink, Source - - - 100 → 240 V ac - - - 16
RS-stocknr. 864-4532
Fabrikantnummer0660-0500
FabrikantBARTH
€ 95,23
Each
Aantal stuks
STG-560 lococube mini-PLC 5 - Mosfet, Solid State Analogue, Digital - - - 7 → 32 V dc - - - 5
RS-stocknr. 442-0802
FabrikantnummerAL2-24MR-D
FabrikantMitsubishi
€ 244,40
Each
Aantal stuks
- Alpha 2 15 - Relay Digital - - - 24 V dc - - - 9
RS-stocknr. 862-4459
Fabrikantnummer6ES7211-1AE40-0XB0
FabrikantSiemens
€ 177,00
Each
Aantal stuks
SIMATIC S7-1200 Series S7-1200 6 (Digital Input, 2 switch as Analogue Input) - Digital, Transistor Analogue, Digital - 24 V dc - - - - - 4 (Digital Output, Transistor Output)
RS-stocknr. 124-4307
Fabrikantnummer0850-0560
FabrikantBARTH
€ 85,60
Each
Aantal stuks
STG-560 lococube mini-PLC 5 - Digital, PWM, Solid State Analogue, Digital - - - 7 → 32 V dc - - - 5
RS-stocknr. 862-4465
Fabrikantnummer6ES7212-1AE40-0XB0
FabrikantSiemens
€ 238,00
Each
Aantal stuks
SIMATIC S7-1200 Series S7-1200 8 (Digital Input, 2 switch as Analogue Input) - Digital, Transistor Analogue, Digital - 24 V dc - - - - - 6 (Digital Output, Transistor Output)
RS-stocknr. 825-1681
Fabrikantnummer6ED1055-1MB00-0BA2
FabrikantSiemens
€ 67,00
Each
Aantal stuks
LOGO! 8, LOGO! 8.2 LOGO! 4 - Relay Digital - - - 12 → 24 V dc - - - 4
RS-stocknr. 124-4308
Fabrikantnummer0850-0660
FabrikantBARTH
€ 112,35
Each
Aantal stuks
STG-660 lococube mini-PLC 10 - Digital, PWM, Solid State Analogue, Digital - - - 7 → 32 V dc - - - 9