Reading another device over modbus

This function is useful if want to get data from another device like a powermeter or an arduino.

Note:

• At the moment only reading of holding registers is supported.
• The device has to use 9600 Baud.

How to enable/configure it

1. Open the config.h file and uncomment the line #define otherNode
2. Change the slave ID.
3. Set the start-register.
4. Set the number how many register should be read.
5. Set the interval.
6. (Optional) Set the mqtt-topic.
7. Upload it on your controller.

HTTP API

Endpoint:

<IP-from-your-ESP>/api/otherNode/holdingRegisters Example output 0,1,2