INVT GD310-011P-4-UL, Руководство по эксплуатации

Страница: 217 / 269

GD310-UL series VFD Communication protocol
-209-
Continuous
writing
command
VFD
address
Parameters
address
CRC check
Byte
number
10s 20s Data
number
If the response message is as below:
Continuous
writing
command
VFD
address
Parameters
address
CRC check
Data
number
Note : The space between above commands is for instruction and there is no space between the
commands during actual applications.
10.5 Common communication fault
Common communication faults: no response to the communication or the VFD 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 with the VFD + and - of RS485 are
connected in reverse.
The 485 wire cap on the terminal board of the VFD is not plug in. the wire cap in behind the terminal
arrangement.