Goodrive350-19 series VFD Communication protocols
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Parameter
address
VFD
address
Write
command
CRC
Forward running
03
06
20 00
00 01
42 28
10.5 Common communication faults
Common communication faults include the following:
•
No response is returned.
•
The VFD returns an exception response.
Possible causes of no response include the following:
•
The serial port is set incorrectly. For example, the converter uses the serial port COM1, but
COM2 is selected for the communication.
•
The settings of the baud rates, data bits, end bits, and check bits are inconsistent with those set
on the VFD.
•
The positive pole (+) and negative pole (-) of the RS485 bus are connected reversely.
•
The resistor connected to 485 terminals on the terminal block of the VFD is set incorrectly.