ModBus

Using the Arduino ModBus and RS485 libraries to retrieve data from a Finder energy meter using a Arduino MKR Wifi 1010

Request Form

Device Adress	Function Code	Starting Register	Register Count	CRC Code
0x21	INPUT REGISTERS	0x0011	2

Example

(!ModbusRTUClient.requestFrom(0x21, INPUT_REGISTERS, 30017, 2))