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 Price For Use With Manufacturer Series Number of Digital Inputs Number of Inputs Input Type Number of Analogue Inputs Number of Digital Outputs Voltage Category Output Type Interface Kit Included Number of Outputs Network Type Display Included
RS Stock No. 742-4204
Mfr. Part No.88974084
BrandCrouzet
MYR1,878.02
Each
units
XD26 Series Millenium 3 - 16 Analogue, Digital - - - Relay - - - - Yes
RS Stock No. 742-4223
Mfr. Part No.88974162
BrandCrouzet
MYR1,788.54
Each
units
- - - 16 Digital - - - Solid State - - 10 - Yes
RS Stock No. 536-8929
Mfr. Part No.88970051
BrandCrouzet
MYR1,282.65
Each
units
- Millenium 3 - 12 Analogue, Digital - - - Relay - - 8 - Yes
RS Stock No. 536-9001
Mfr. Part No.88970161
BrandCrouzet
MYR1,551.79
Each
units
- Millenium 3 - 16 Analogue, Digital - - - Relay - - 10 - Yes
RS Stock No. 123-7005
Mfr. Part No.88981133
BrandCrouzet
MYR2,195.94
Each
units
- Em4 - 4 (Digital), 12 (Digital/Analogue) Analogue, Digital - - 24 V dc PWM, Relay - - 2 (PWM), 8 (Relay) - -
RS Stock No. 123-7006
Mfr. Part No.88981136
BrandCrouzet
MYR2,400.67
Each
units
- Em4 - 4 (Digital), 12 (Digital/Analogue) Analogue, Digital - - 24 V dc PWM, Relay - - 2 (PWM), 8 (Relay) - -
RS Stock No. 704-8327
Mfr. Part No.88974041
BrandCrouzet
MYR1,074.18
Each
units
CD12 Series CD12 - 8 Analogue, Digital - - - Relay - - 4 - Yes
RS Stock No. 742-4191
Mfr. Part No.88974082
BrandCrouzet
MYR1,680.64
Each
units
- - - 12 Analogue, Digital - - - Relay - - 8 - Yes
RS Stock No. 536-9118
Mfr. Part No.88970233
BrandCrouzet
MYR595.31
Each
units
Millenium 3 Series Millenium 3 - 8 Digital - - - Relay - - 6 - -
RS Stock No. 742-4214
Mfr. Part No.88974144
BrandCrouzet
MYR1,019.68
Each
units
- Millenium 3 - 6 Digital - - - Relay - - 4 - Yes
RS Stock No. 615-0022
Mfr. Part No.88970031
BrandCrouzet
MYR1,159.37
Each
units
- Millenium 3 - 18 Analogue, Digital - - - Relay - - 8 - -
RS Stock No. 123-7000
Mfr. Part No.88981123
BrandCrouzet
MYR3,261.92
Each
units
- Em4 - 4 (Digital), 12 (Digital/Analogue) Analogue, Digital - - 24 V dc PWM, Relay - - 2 (PWM), 8 (Relay) - -
RS Stock No. 175-2518
Mfr. Part No.88975111
BrandCrouzet
MYR1,435.26
Each
units
PLC XDP24-E - 16 (Digital) Digital - - 24 V dc Relay - - 8 Ethernet Yes
RS Stock No. 742-4163
Mfr. Part No.88974034
BrandCrouzet
MYR1,224.28
Each
units
- Millenium 3 - 12 Digital - - - Relay - - 8 - -
RS Stock No. 123-7001
Mfr. Part No.88981126
BrandCrouzet
MYR5,003.95
Each
units
- Em4 - 4 (Digital), 12 (Digital/Analogue) Analogue, Digital - - 24 V dc PWM, Relay - - 2 (PWM), 8 (Relay) - -
RS Stock No. 175-2524
Mfr. Part No.88975911
BrandCrouzet
MYR1,605.89
Each
units
PLC XDP24-E - 16 (Digital) Digital - - 24 V dc Relay - Yes 8 - Yes
RS Stock No. 175-2517
Mfr. Part No.88975101
BrandCrouzet
MYR1,234.51
Each
units
PLC XDP24 - 16 (Digital) Digital - - 24 V dc Relay - - 8 RJ45, SMTP, SSL, TCP, UDP, USB Yes
RS Stock No. 175-2523
Mfr. Part No.88975901
BrandCrouzet
MYR1,435.26
Each
units
PLC XDP24 - 16 (Digital) Digital - - 24 V dc Relay - Yes 8 RJ45, SMTP, SSL, TCP, UDP, USB Yes
RS Stock No. 742-4172
Mfr. Part No.88974042
BrandCrouzet
MYR1,072.24
Each
units
- Millenium 3 - 8 Digital - - - Transistor - - 4 - Yes
RS Stock No. 614-9921
Mfr. Part No.88970142
BrandCrouzet
MYR931.32
Each
units
- Millenium 3 - 6 Analogue, Digital - - - Relay - - 4 - Yes