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. 862-4499
Fabrikantnummer6ES7217-1AG40-0XB0
FabrikantSiemens
783,00 €
Each
Aantal stuks
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 14 (Digital Input - Digital, Transistor Analogue, Digital - 24 V dc - - - - - Transistor Output), 10 (Digital Output
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. 818-7085
Fabrikantnummer88981106
FabrikantCrouzet
386,25 €
Each
Aantal stuks
Em4 Series Em4 Local 16 - Relay, Static Analogue, Digital - 24 V dc - - - - Yes 10
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. 862-4471
Fabrikantnummer6ES7214-1AG40-0XB0
FabrikantSiemens
360,00 €
Each
Aantal stuks
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 14 (Digital Input - Digital, Transistor Analogue, Digital - 24 V dc - - - - - Transistor Output), 10 (Digital Output
RS-stocknr. 825-1685
Fabrikantnummer6ED1055-1NB10-0BA2
FabrikantSiemens
109,00 €
Each
Aantal stuks
LOGO! 8, LOGO! 8.2 LOGO! 8 - Relay Digital - - - 24 V dc - - - 8
RS-stocknr. 787-7989
Fabrikantnummer6ES7312-5BF04-0AB0
FabrikantSiemens
504,30 €
Each
Aantal stuks
SIMATIC S7-300 Series S7-300 10 (Digital) - Digital Digital - 24 V dc - - - - - 6 (Digital)
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. 787-7992
Fabrikantnummer6ES7314-6BH04-0AB0
FabrikantSiemens
1.684,08 €
Each
Aantal stuks
SIMATIC S7-300 Series S7-300 4 (Analogue), 24 (Digital) - Analogue, Digital Analogue, Digital - 24 V dc - - - - - 2 (Analogue), 16 (Digital)
RS-stocknr. 862-4461
Fabrikantnummer6ES7212-1BE40-0XB0
FabrikantSiemens
238,00 €
Each
Aantal stuks
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 8 (Digital Input - Digital, Relay Analogue, Digital - 85 → 264 V ac - - - - - Relay Output), 6 (Digital Output
RS-stocknr. 872-6328
Fabrikantnummer6AV2132-0KA00-0AA1
FabrikantSiemens
399,00 €
Each
Aantal stuks
LOGO! 8, LOGO! 8.2 LOGO! - - Relay Digital - - - 12 → 24 V dc - - - 4
RS-stocknr. 862-4480
Fabrikantnummer6ES7214-1HG40-0XB0
FabrikantSiemens
360,00 €
Each
Aantal stuks
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 14 (Digital Input - Digital, Relay Analogue, Digital - 24 V dc - - - - - Relay Output), 10 (Digital Output
RS-stocknr. 825-1679
Fabrikantnummer6ED1055-1FB10-0BA2
FabrikantSiemens
109,00 €
Each
Aantal stuks
LOGO! 8, LOGO! 8.2 LOGO! 8 - Relay Digital - - - 115 V ac/dc, 230 V ac/dc - - - 8
RS-stocknr. 468-4242
FabrikantnummerSR3B261BD
221,60 €
Each
Aantal stuks
- Zelio Logic 16 - Relay Analogue, Discrete - - - 24 V dc - - - 10
RS-stocknr. 862-4496
Fabrikantnummer6ES7215-1HG40-0XB0
FabrikantSiemens
542,00 €
Each
Aantal stuks
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 14 (Digital Input - Digital, Relay Analogue, Digital - 24 V dc - - - - - Relay Output), 10 (Digital 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. 862-4459
Fabrikantnummer6ES7211-1AE40-0XB0
FabrikantSiemens
177,00 €
Each
Aantal stuks
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 6 (Digital Input - Digital, Transistor Analogue, Digital - 24 V dc - - - - - Transistor Output), 4 (Digital Output
RS-stocknr. 825-1697
Fabrikantnummer6ED1055-1MD00-0BA2
FabrikantSiemens
99,00 €
Each
Aantal stuks
LOGO! 8, LOGO! 8.2 LOGO! 2 - - Analogue Pt100/1000 - - - 12 → 24 V dc - - - -
RS-stocknr. 825-1694
Fabrikantnummer6ED1055-1MA00-0BA2
FabrikantSiemens
82,00 €
Each
Aantal stuks
LOGO! 8, LOGO! 8.2 LOGO! 2 - - Analogue - - - 12 → 24 V dc - - - -
RS-stocknr. 862-4465
Fabrikantnummer6ES7212-1AE40-0XB0
FabrikantSiemens
238,00 €
Each
Aantal stuks
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 8 (Digital Input - Digital, Transistor Analogue, Digital - 24 V dc - - - - - Transistor Output), 6 (Digital Output