PLCs, HMI & Data Acquisition
A PLC (programmable logic controller) is an industrial digital computer designed for the control and automation of manufacturing processes or robotic devices. Programmable Logic Controllers are used 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 a microprocessor-based control system and act as the electronic circuitry within an industrial computer. They are usually built-in carry out instructions from the computer program via programming languages, performing basic mathematical, logical, control, input and output operations.PLC ApplicationsPLC controllers are incredibly useful and have many applications across several industries such as manufacturing, food & beverage, and building control. PLC’s control the automation process in the machinery used for:Production plantsTraffic light controlsPackaging machinesLifts and escalatorsMedical applicationsAutomatic gate systemsHeating control systemsHow do PLC’s work?PLC Controller’s respond to inputs from programming software and give a desired output. Programmable Logic Controllers can also include human-machine interfaces.Different models use varying PLC Programs based on the programming languages used in the software. Programming languages that are used in PLC programming include:ST: Structured Text (text-based)FBD: Function Block Diagram (graphic-based)LAD: Ladder logic (graphic-based)STL: Statement List (text-based)SCL: Structured Control Language (graphic-based)PLC programming can be quite complex but there are simpler, image-based options available such as Ladder Logic that has user-friendly Ladder diagrams to understand and improve processes. Laptop and software are usually used for Ladder Logic and Ladder Diagrams, however, some older models use handheld controllers.Types of PLC’sProgrammable Logic Controllers can be categorised in multiple ways, each with different functions, features and capabilities. For example, Soft PLC’s are software based and use their own operating system but do not have their own CPU. Whereas, Hard PLC’s are hardware based and typically only include the essential control functions. The full range of programmable controllers include:Hard PLC’sSoft PLC’sCompact PLC’sSlot PLC’sUnitary PLC’sModular PLC’sProgrammable Controllers can also be made more efficient by using equipment such as, HMI displays, DIN Rails, and Communication modules (such as MODBUS) which can be enhanced into a highly functional automated control system with PLC accessories. More information can be found our complete PLCs guide
Showing 193–216 of 307 results
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S7-1200 COMMUNICATION MODULE RS232
IDR3,276,239.15 -
S7-1200 COMMUNICATION MODULE RS422/485
IDR3,613,355.61 -
S7-1200 COMMUNICATION MODULE CM 1243-5
IDR12,385,830.76 -
S7-1200 COMMUNICATION PROCESSOR CP1243-1
IDR10,877,722.34 -
S7-1200 SIGNAL BOARD SB 1231 RTD
IDR2,880,594.07 -
S7-1200+KTP400 BASIC STARTER KIT CONSIST
IDR14,337,518.99 -
S7-1200+KTP700 BASIC STARTER KIT CONSIST
IDR25,121,994.12 -
S7-300 PC ADAPTER, USB TO RS485
IDR12,883,533.81 -
S7-300 PLC FRONT PANEL CONNECTOR,20 PIN
IDR1,038,306.11 -
S7-300 PLC FRONT PANEL CONNECTOR,40 PIN
IDR1,607,019.69 -
S7-300 PLC MOUNTING RAIL,530MM LENGTH
IDR1,557,511.61 -
S7-300 PLC TO HMI CONNECTION CABLE,5M L
IDR0.00 -
SCALANCE X101-1 IE MEDIA CONVERTER
IDR7,986,534.38 -
-27.10%
SCALANCE XB008 UNMANAGED INDUSTRIAL ETHE
IDR2,812,940.02IDR2,300,657.26 -
SECURE DIGITAL MEMORY CARD 512 MBYTE
IDR1,777,361.05 -
Siemens S7-1200 PLC CPU Starter Kit - 10 Inputs, 6 Outputs, For Use With CPU, Profinet Networking, Ethernet Interface
IDR12,311,883.31 -
SIGNAL BOARD SB 1221, 4 DI 24VDC 200KHZ
IDR1,872,915.84 -
SIGNAL BOARD SB1222, 4 DQ 24VDC 200KHZ
IDR1,825,295.78 -
SIGNAL BOARD SB1222, 4 DQ 5VDC 200KHZ
IDR1,825,295.78 -
SIMATIC DP ELECTRONIC MODULE FOR ET 200S
IDR0.00 -
SIMATIC DP, 1 ELECTRON. MODULE
IDR0.00 -
SIMATIC DP, 5 ELECTRON. MODULES
IDR0.00 -
SIMATIC DP, 5 ELECTRON. MODULES
IDR2,043,991.43 -
SIMATIC DP, 5 ELECTRON. MODULES
IDR1,114,980.70
