INVT Goodrive18 Series User Manual

Goodrive18 series two-in-one VFD Communication
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Continuous
writing
command
VFD
address
Parameters
address
CRC check
Data
number
ASCII mode
The command sent from the master is as follows:
Continuous
writing
command
Parameters
address
Data
number
VFD
address
LRC
check
If the operation is successful, the following response is returned:：
Continuous
writing
command
Parameters
address
Data
number
VFD
address
LRC
check
Note: In the preceding command description, spaces are added to a command just for
explanatory purposes. In practical applications, no space is required in the commands.
7.6 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 adapter 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. The RS485 wire cap on the terminal board of the VFD is not connected.
This wire cap is at the back of the terminal block.
• #1 inverter unit and #2 inverter unit conflict in RS485 communication address.

INVT Goodrive18 Series Specifications

General

Brand	INVT
Model	Goodrive18 Series
Category	Industrial Electrical
Language	English