Following up on my earlier post I’d like to request a feature for the EV Charger. My problem was wanting a failsafe so that if the WiFi failed the charger would stop, or drop back to minimum current. Using the solution in that post (additional hardware) works, but having that built into the charger firmware would be even simpler.
The idea:
- Implement a modbus register that, when enabled, must be written to regularly.
- If no write occurs within a specified time, stop the charger.
- The feature would be enabled by another configuration register which holds the timeout period in seconds
- The initial timeout value would be zero to disable the feature by default.
This would allow an external energy management system to control the charger, with a failsafe state on loss of communication.