Siemens / G.E PLC Engineering Services

PLC Engineering & System Integration

NL Automation provides expert Siemens and G.E PLC engineering services for new installations, brownfield upgrades and ongoing maintenance. Our engineers deliver reliable, well-structured PLC programs with thorough documentation — ensuring your systems are easy to test, operate and maintain.

PLC Engineering Services

• PLC application development from scratch — structured and modular program architecture
• Sequence control, equipment start-stop interlocks and permissive logic development
• Equipment control logic — motors, pumps, compressors, valves and drive interfaces
• Process control algorithms — PID, ratio, cascade and feedforward control
• Safety interlock and shutdown logic with defined fail-safe states
• Existing program modification, logic optimization and standardization
• Migration engineering — legacy platform upgrades to modern Siemens S7 / TIA Portal

HMI & SCADA Integration

• HMI screen development — process mimic, equipment status and operator controls
• SCADA interface integration with plant-wide supervisory systems
• PLC-to-DCS data exchange — OPC, Modbus TCP/RTU and Profibus communication
• Third-party package and package-unit PLC integration
• Communication diagnostics and data validation logic

Commissioning & Support

• Factory and site acceptance testing — logic verification and punch-list closure
• Field commissioning — control-loop checks, instrument calibration verification
• Plant start-up support and operational fine-tuning
• Root-cause troubleshooting of PLC faults and communication issues
• Ongoing maintenance support and emergency fault response