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Downstream from a UT with CC-Link communication (the Modbus master), the power to a controller connected via RS485 communication (the Modbus slave) went out. After the power to the controller was restored, communication did not restart. What should I do?

Downstream from a UT with CC-Link communication (the Modbus master), the power to a controller connected via RS485 communication (the Modbus slave) went out. After the power to the controller was restored, communication did not restart. What should I do?

Either set the SCAN parameter, or turn ON the rescan request flag on the PLC side.

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