In case where multiple control points are needed a custom PID controller is a natural approach. Such a solution is developed using ARM Cortex M7 MCU which besides Ethernet interface has RS485. Device has TCP server which allows for configuration and data capture in real time sense.
Requirements:
- Industrial universal PID controller
- RS485 Interface for Device Configuration
- 2x Ethernet Interface for device
- Profinet Bus
- Current measurement and current controlled output 4-20mA
- Symmetric DAC output
- Load Cell
- Display
Major components:
- STM32H753 with IS42S16800
- Wiznet5500
- PAM8830
- SST26VF064
- RS485
Number of PCB layers: 4
BOM price: 100 USD
Realization time: 12 weeks
