INVT Goodrive35 Series Operation Manual page 239

Goodrive35 Series Closed-loop Vector Control VFD
Code Name
Parameter
07H
read-only
Parameter
cannot be
08H
modified in
running
Password
09H
protection
When returning a response, the device uses a function code domain and fault address to indicate
whether it is a normal response (no error) or exception response (some errors occur). In a normal
response, the device returns the corresponding function code and data address or sub-function code.
In an exception response, the device returns a code that is equal to a normal code, but the first bit is
logic 1.
For example, if the master device transmits a request message to a slave device for reading a group
of function code address data, the code is generated as follows:
For a normal response, the same code is returned. For an exception response, the following code is
returned:
In addition to the modification of the code, the slave returns a byte of exception code that describes
the cause of the exception. After receiving the exception response, the typical processing of the
master device is to transmit the request message again or modify the command based on the fault
information.
For example, to set the "Running command channel" (P00.01, the parameter address is 0001H) of
the VFD whose address is 01H to 03, the command is as follows:
01
VFD
address
But the setting range of the "Running command channel" is 0 to 2. The value 3 exceeds the setting
range. In this case, the VFD returns an error message response as shown in the following:
The parameter to be modified in the write operation of the upper
computer is a read-only parameter.
The parameter to be modified in the write operation of the upper
computer cannot be modified during the running of the VFD.
A user password is set, and the upper computer does not provide
the password to unlock the system when performing a read or write
operation. The error of "system locked" is reported.
0 0 0 0 0 0 1 1 (03H in the hexadecimal form)
1 0 0 0 0 0 1 1 (83H in the hexadecimal form)
06 00 01
Write Parameter
command address
01 86
VFD Exception
address response code
Definition
00 03
Parameter
data
04 43 A3
Error code CRC check
232
Communication protocol
98 0B
CRC check