Programmable Logic Controller
PLC — Programmable Logic Controller
The PLC is the control core of an automated machine or process. It reads inputs from sensors and switches, executes the control program and drives motors, valves and drives — reliably, cycle after cycle.
Illustrative visualisation — not a specific manufacturer model
Technical overview
What a PLC system includes
- CPU / controller
- Digital inputs & outputs DI / DO
- Analog inputs & outputs AI / AO
- Communication ports
- Expansion & remote I/O
- Control power 24 V DC
01Applications
- Machine sequencing and interlocks
- Process control loops (level, pressure, temperature, flow)
- Pump and compressor control
- Replacement of relay-based and obsolete controllers
- Data source for HMI, SCADA and energy monitoring
02System integration
- Connects to HMI panels for operator control
- Communicates with VFDs, meters and instruments
- Supplies data to SCADA, BMS, EMS and IoT platforms
03Selection considerations
- I/O count and signal types, with spare capacity
- Required scan speed and control functions
- Communication protocols needed on site
- Environment, panel space and maintainability
- Local support and spare-part availability
Engineering support
More than supplying a PLC
Machine Lab reviews the application, recommends a suitable product and can integrate, install and commission it as part of the complete system.
Related solutions
Related services
Related products
In the same area
Supervisory Control and Data Acquisition
SCADA
Supervisory monitoring, visualization, alarm management, historical data and centralized control.
Engineering enquiry
Need a PLC for your application?
Send the application details — load, process, pipe size, environment or existing equipment — and our engineers will respond with a recommendation.
- Talk to an Engineer +880 1749-771939
- Email / RFQ manik@machinelab.com.bd