7EN02-0390-03

Modbus master best practices

In order for your meter to operate as a Modbus master, you must complete some prerequisite configuration.
NOTE: These settings are required in addition to the serial or Ethernet Modbus prerequisites.
Prerequisite Description
Modbus slave devices All Modbus slave devices must be communicating and appropriately configured.
Protocol
  • Modbus mastering serial devices: the master’s serial port protocol must be set to Modbus master.

  • Modbus mastering Ethernet devices: the master must be communicating to the slave devices over Ethernet port 502.

NOTE: Having more than one Modbus master on a serial Modbus network may cause communication conflicts.
Mastered devices The Modbus master device must have the slave device information entered for mastering.
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