I am about to take delivery of my SunSynk inverter which does not seem to have any binding support (using the new SunSynk logger).
So it appears that I will have to revert to MODBUS over RS485, so I have a few questions which I have not been able to answer. Google seems to produce an endless collection of possible answers - so hoping for so hoping someone here has run into and solved this?
- What is the maximum cable length I can use. The standard for RS485 says 1.2 km (4000ft). But not sure if that is valid in this case. My cable length between inverter and openHAB will be about 30m (all indoors)
- Would CAT5/CAT6 cable work for this?
- What is the pinout of the required cable from RJ45 (inverter) to DB9-female (openHAB serial port)
- Any other suggestions/recommendations to avoid issues
Any help would be appreciated.