INVT Goodrive18 Series User Manual

Goodrive18 series two-in-one VFD Communication
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describes the cause of the exception. After receiving the exception response, the typical
processing of the master is to send the request message again or modify the command based
on the fault information.
For example, to set the "Channel of running commands" (P00.01, the parameter address is
0000H) to 03 for the VFD whose address is 01H, the command is as follows:
VFD
address
Read
command
Parameters
address
Parameters
data
CRC check
The setting range of the "Channel of running commands" is 0 to 2. The value 3 exceeds the
setting range. In this case, the VFD returns an error message as shown in the following:
VFD
address
CRC check Fault code
Abnormal
response code
The exception response code 86H (generated based on the MSB "1" of the write command
06H) indicates that it is an exception response to the write command (06H). The error code is
04H that indicates the error "Operation failure", which means "The parameter is set to an
invalid value in the write operation".
7.5 Reading and writing examples
For the formats of the read and write commands, see section 7.3.
7.5.1 Example of reading command 03H
Example 1: Read status word 1 of the VFD whose address is 01H. According to the table of
address description of other function codes, the parameter address of status word 1 of the
VFD is 2100H.
RTU mode
The read command sent to the VFD is as follows:
Read
command
VFD
address
CRC check
Parameters
address
Data number
Assume that the following response is returned:
Read
command
Data
address
Data content
CRC check
VFD
address

INVT Goodrive18 Series Specifications

General

Brand	INVT
Model	Goodrive18 Series
Category	Industrial Electrical
Language	English