INVT GD20-018G-4-EU

Goodrive20-EU series VFD Communication protocol
133
VFD
address
Read
command
Parameters
data
CRC check 2-byte
data
Because the parameter data is 0032H (50) and 50 divided by 10 is 5, then the hibernation
restore delay time is 5s.
7.4.4 Fault message response
There may be fault in the communication control. For example, some parameter can only be
read. If a writing message is sent, the VFD will return a fault response message.
The fault message is from the VFD to the master, its code and meaning is as follows:
Code
Name
Meaning
01H
Illegal command
The command from master cannot be executed. The
reason maybe:
1. This command is only for new version and this version
cannot realize.
2. Slave is in fault state and cannot execute it.
02H
Illegal data address.
Some of the operation addresses are invalid or not
allowed to access. Especially the combination of the
register and the transmitting bytes are invalid.
03H
Illegal value
When there are invalid data in the message framed
received by slave.
Note: This error code does not indicate the data value to
write exceed the range, but indicate the message frame is
an illegal frame.
04H
Operation failed
The parameter setting in parameter writing is invalid. For
example, the function input terminal cannot be set
repeatedly.
05H
Password error
The password written to the password check address is
not same as the password set by P7.00.
06H
Data frame error
In the frame message sent by the upper monitor, the
length of the digital frame is incorrect or the counting of
CRC check bit in RTU is different from the lower monitor.
07H
Written not allowed.
It only happen in write command, the reason maybe:
1. The written data exceeds the parameter range.
2. The parameter should not be modified now.
3. The terminal has already been used.
08H
The parameter cannot
be modified during
running
The modified parameter in the writing of the upper monitor
cannot be modified during running.