Common Communication Fault - Salicru CV30 User Manual

If the response message is as below:
Note: the blank in the above command is for illustration. The blank can not be added in the actual application
unless the upper monitor can remove the blank by themselves.

7.6 Common communication fault

Common communication faults: no response to the communication or the inverter returns abnormal fault.
The possible reason for no response to the communication:
- Selecting wrong serial interface, for example, if the converter is COM1, selecting COM2 during the
communication
- The baud rate, digital bit, end bit and check bit are not the same of the inverter
- + and – of RS485 are connected in reverse.
- The 485 wire cap on the terminal board of the inverter is not plug in. the wire cap in behind the terminal
arrangement.
Communication protocol 123 - 140