[Cause]
When the baud rate setting changes in TP mode, this alarm occurs together with IB-S-483. First refer to the explanation of IB-S-483. It informs the operator that, to activate the new baud rate setting, controller power must be turned off and the connector supplying external power to the slave side of the InterBus board must also be disconnected for approximately 5 seconds. Download the new baud rate setting to the InterBus board before turning off power as explained under IB-S-483.
[Countermeasure]
Turn off controller power and disconnect the connector supplying external power to the slave side of the InterBus board. After at least 5 seconds, turn on controller power and reconnect the connector.