Configure Modbus RTU for the APM Power Meter

The APM Power Meter comes standard with Modbus RTU. Modbus is implemented in the APM Power Meter to enable the reading of the measured values and the status of the alarms. Here's how to configure Modbus RTU over RS485.

Go to the Modbus RTU tab in the APM configuration software.

Slave ID - Choose any value between 0 and 255

Baud Rate - Choose any of the below supported rates:

4800 9600 14400 19200 24000 28800
33600 38400 43200 48000 52800 57600
62400 67200 72000 76800 81600 86400
91200 96000 100800 105600 110400 115200
120000 124800 129600 134400 139200 144000
148800 153600 158400 163200 168000 172800
177600 182400 187200 192000

Stop Bits & Parity - Choose any of the following combinations

  • 2 stop bits and no parity bits
  • 1 stop bit and an even parity bit
  • 1 stop bit and an odd parity bit

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