System
This simple sequence PLC application allows traffic light control of a cross-road to be implemented on a timed sequence basis. The control program can be further developed to cope with interrupts generated from pedestrian crossing requests or off-peak vehicle detector inputs.
Function
- Real-life application
- Timed sequence control
- Interrupt device control
- Easy to understand process
- Low cost application
- Operates with major PLC types
- Pre-wired or "wire your own" Mitsubishi, Allen Bradley & Siemens PLCs available (supplied separately), or use your own
Topics
- Programming counters
- Setting initial conditions
- Time-based process control
- Use of interrupts & emergency stop
