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What does error 9 warning RS485 / Modbus protocol mean in Lexium Integrated Drive's ?

If you connect to the Lexium Integrated Drive using Lexium CT and you find error "9 warning RS485 / Modbus protocol" in the error memory log, this is simply an alert to notify that there had been an unexpected termination of the RS485 communication.
Lexium Integrated Drives will save alerts and warnings in the error history log.

This particular warning will be logged in the drives error memory anytime there is an interruption of the RS485 modbus connection while connected to the device with the Lexium CT commissioning software.

For example:  You are connected to the device with Lexium CT and the communication cable accidentally becomes unplugged.  Or, you are connected to the device with Lexium CT and the power is accidentally interrupted to the device.
In both of these examples the RS485 connection was terminated unexpectedly and this warning will be logged in the drives error memory.

To avoid this warning being logged in the error history log you should always select "disconnect" from the Lexium CT software before breaking the communication channel or before turning off the power to the drive.
 
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