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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Description Prix 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 Number of Analogue Outputs Interface Kit Included Number of Outputs Network Type
N° de stock RS 862-4499
Référence fabricant6ES7217-1AG40-0XB0
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783,00 €
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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 Ethernet
N° de stock RS 862-4471
Référence fabricant6ES7214-1AG40-0XB0
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360,00 €
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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 Ethernet
N° de stock RS 825-1685
Référence fabricant6ED1055-1NB10-0BA2
MarqueSiemens
109,00 €
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Unité
LOGO! 8, LOGO! 8.2 LOGO! 8 - Relay Digital - - - - - - 8 -
N° de stock RS 787-7989
Référence fabricant6ES7312-5BF04-0AB0
MarqueSiemens
504,30 €
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SIMATIC S7-300 Series S7-300 10 (Digital) - Digital Digital - 24 V dc - - - - 6 (Digital) USB
N° de stock RS 787-7992
Référence fabricant6ES7314-6BH04-0AB0
MarqueSiemens
1.684,08 €
Each
Unité
SIMATIC S7-300 Series S7-300 4 (Analogue), 24 (Digital) - Analogue, Digital Analogue, Digital - 24 V dc - - - - 2 (Analogue), 16 (Digital) USB
N° de stock RS 872-6328
Référence fabricant6AV2132-0KA00-0AA1
MarqueSiemens
399,00 €
Each
Unité
LOGO! 8, LOGO! 8.2 LOGO! - - Relay Digital - - - - - - 4 Ethernet
N° de stock RS 862-4461
Référence fabricant6ES7212-1BE40-0XB0
MarqueSiemens
238,00 €
Each
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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 Ethernet
N° de stock RS 862-4480
Référence fabricant6ES7214-1HG40-0XB0
MarqueSiemens
360,00 €
Each
Unité
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 Ethernet
N° de stock RS 825-1679
Référence fabricant6ED1055-1FB10-0BA2
MarqueSiemens
109,00 €
Each
Unité
LOGO! 8, LOGO! 8.2 LOGO! 8 - Relay Digital - - - - - - 8 -
N° de stock RS 825-1681
Référence fabricant6ED1055-1MB00-0BA2
MarqueSiemens
67,00 €
Each
Unité
LOGO! 8, LOGO! 8.2 LOGO! 4 - Relay Digital - - - - - - 4 -
N° de stock RS 862-4496
Référence fabricant6ES7215-1HG40-0XB0
MarqueSiemens
542,00 €
Each
Unité
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 Ethernet
N° de stock RS 862-4459
Référence fabricant6ES7211-1AE40-0XB0
MarqueSiemens
177,00 €
Each
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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 Ethernet
N° de stock RS 825-1697
Référence fabricant6ED1055-1MD00-0BA2
MarqueSiemens
99,00 €
Each
Unité
LOGO! 8, LOGO! 8.2 LOGO! 2 - - Analogue Pt100/1000 - - - - - - - -
N° de stock RS 825-1694
Référence fabricant6ED1055-1MA00-0BA2
MarqueSiemens
82,00 €
Each
Unité
LOGO! 8, LOGO! 8.2 LOGO! 2 - - Analogue - - - - - - - -
N° de stock RS 862-4465
Référence fabricant6ES7212-1AE40-0XB0
MarqueSiemens
238,00 €
Each
Unité
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 Ethernet
N° de stock RS 862-4483
Référence fabricant6ES7215-1BG40-0XB0
MarqueSiemens
542,00 €
Each
Unité
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 14 (Digital Input - Digital, Relay Analogue, Digital - 85 → 264 V ac - - - - Relay Output), 10 (Digital Output Ethernet
N° de stock RS 825-1691
Référence fabricant6ED1055-1MM00-0BA2
MarqueSiemens
117,00 €
Each
Unité
LOGO! 8, LOGO! 8.2 LOGO! - - Analogue - - - - - - - 2 -
N° de stock RS 872-6321
Référence fabricant6AV2132-3GB00-0AA1
MarqueSiemens
699,00 €
Each
Unité
LOGO! 8, LOGO! 8.2 LOGO! - - Relay Digital - - - - - - 4 Ethernet
N° de stock RS 825-1688
Référence fabricant6ED1055-1HB00-0BA2
MarqueSiemens
67,00 €
Each
Unité
LOGO! 8, LOGO! 8.2 LOGO! 4 - Relay Digital - - - - - - 4 -
N° de stock RS 862-4477
Référence fabricant6ES7214-1BG40-0XB0
MarqueSiemens
360,00 €
Each
Unité
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 14 (Digital Input - Digital, Relay Analogue, Digital - 85 → 264 V ac - - - - Relay Output), 10 (Digital Output Ethernet