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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Beskrivning Pris 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-artikelnummer 917-6370
VarumärkeRS PRO
1 036,56 kr
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- - 8 - Digital, Relay Analogue, Digital - - - 12 → 24 V dc - - - 4
RS-artikelnummer 917-6373
VarumärkeRS PRO
938,94 kr
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- - 8 - Digital, Relay Digital - - - 110 → 240 V ac - - - 4
RS-artikelnummer 917-6392
VarumärkeRS PRO
387,78 kr
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RS PRO Logic Modules - 1 - RS485 Protocol (D-), RS485 Protocol (D+), RS485 Protocol (Two Wires) TTL Level - - - 12 → 24 V dc - - - 1
RS-artikelnummer 917-6383
VarumärkeRS PRO
433,13 kr
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RS PRO Logic Modules - 1 - RS485 Protocol (D-), RS485 Protocol (D+), RS485 Protocol (Two Wires) TTL Level - - - 110 → 240 V ac - - - 1
RS-artikelnummer 917-6386
VarumärkeRS PRO
549,29 kr
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RS PRO Logic Modules - 8 - Digital, Relay Digital - - - 110 → 240 V ac - - - 4
RS-artikelnummer 917-6389
VarumärkeRS PRO
471,11 kr
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RS PRO Logic Modules - 8 - Digital, Relay Digital - - - 12 → 24 V dc - - - 4
RS-artikelnummer 917-6361
VarumärkeRS PRO
898,64 kr
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- - 8 - Digital, Relay Digital - - - 110 → 240 V ac - - - 4
RS-artikelnummer 917-6399
VarumärkeRS PRO
155,31 kr
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RS PRO Logic Modules - - - - - - - - - - - - -
RS-artikelnummer 917-6377
VarumärkeRS PRO
951,90 kr
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- - 8 - Digital, Relay Analogue, Digital - - - 12 → 24 V dc - - - 4
RS-artikelnummer 885-0926
Tillv. art.nrIS.MD21.base
VarumärkeIndustrial Shields
2 375,19 kr
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- M-Duino 13 - Analogue, Digital Analogue, Digital - 12 → 24 V dc - - - - - 8
RS-artikelnummer 864-4538
Tillv. art.nr0850-0600
VarumärkeBARTH
1 316,59 kr
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STG-600 lococube mini-PLC 10 - PWM, Solid State Analogue, Digital - - - 7 → 32 V dc - - - 9
RS-artikelnummer 442-0795
Tillv. art.nrAL2-24MR-A
VarumärkeMitsubishi
2 527,10 kr
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- Alpha 2 15 - Relay Digital - - - 100 → 240 V ac - - - 9
RS-artikelnummer 123-2106
Tillv. art.nr0850-0680
VarumärkeBARTH
1 316,59 kr
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STG-680 lococube mini-PLC 10 - Digital, PWM, Solid-State Analogue, DC Digital - - - 7 → 32 V dc - - - 10
RS-artikelnummer 763-1002
Tillv. art.nr1SAP186200R0004 TA574-D-T-ETH
VarumärkeABB
7 127,82 kr
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AC500-eCo Series AC500-eC0 8 8 Digital Digital - 24 V dc 6 - - - Yes 6
RS-artikelnummer 862-4487
Tillv. art.nr6ES7215-1AG40-0XB0
VarumärkeSiemens
5 895,06 kr
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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-artikelnummer 442-0789
Tillv. art.nrAL2-14MR-D
VarumärkeMitsubishi
1 807,95 kr
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- Alpha 2 8 - Relay Analogue - - - 24 V dc - - - 6
RS-artikelnummer 815-5634
Tillv. art.nrAFPX-C30R
VarumärkePanasonic
3 135,11 kr
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FP-X Series AFPX-C Series 16 - Relay DC - 100 → 240 V ac - - - - - 14
RS-artikelnummer 760-9229
Tillv. art.nrZEN-10C2AR-A-V2
VarumärkeOmron
2 047,00 kr
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- ZEN 6 - Relay Analogue - - - 85 → 264 V ac - - - 4
RS-artikelnummer 825-1685
Tillv. art.nr6ED1055-1NB10-0BA2
VarumärkeSiemens
1 162,38 kr
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LOGO! 8, LOGO! 8.2 LOGO! 8 - Relay Digital - - - 24 V dc - - - 8
RS-artikelnummer 442-0802
Tillv. art.nrAL2-24MR-D
VarumärkeMitsubishi
2 527,10 kr
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- Alpha 2 15 - Relay Digital - - - 24 V dc - - - 9