Common Communication Faults - INVT Goodrive350 Series Operation Manual

Goodrive350 series high-performance multifunction VFD
03
VFD
address

9.5 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.
06 20 00
Parameter
Write
address
command
00 01
Forward running
-286-
Communication
42 28
CRC