INVT GD10-0R2G-2-B, Руководство по эксплуатации

Страница: 104 / 125

Goodrive10 Series Mini VFD Communication protocol
-99-
Code Name Meaning
08H
Parameter
cannot be
modified in
running
The parameter to be modified in the write operation of the
upper computer cannot be modified during the running of
the VFD.
09H
Password
protection
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.
The slave uses functional code fields and fault addresses to indicate it is a normal response
or some error occurs (named as objection response). For normal responses, the slave
shows corresponding function codes, digital address or sub-function codes as the response.
For objection responses, the slave returns a code which equals the normal code, but the
first byte is logic 1.
For example: when the master sends a message to the slave, requiring it to read a group of
address data of the VFD function codes, there will be following function codes:
0 0 0 0 0 0 1 1 (Hex 03H)
For normal responses, the slave responds the same codes, while for objection responses, it
will return:
1 0 0 0 0 0 1 1 (Hex 83H)
Besides the function codes modification for the objection fault, the slave will respond a byte
of abnormal code which defines the error reason. When the master receives the response
for the objection, in a typical processing, it will send the message again or modify the
corresponding order.
For example, set the
“running command channel” of the VFD (P00.01, parameter address is
0001H) with the address of 01H to 03, the command is as following:
VFD
address
Write
command
Parameter
address
Parameter
data
CRC check
01 06 00 01 00 03 98 0B
But the setting range of
“running command channel” is 0–2, if it is set to 3, because the
number is beyond the range, the VFD will return fault response message as below:
VFD
address
CRC check Fault code
Exception
response code
01 86 04 43 A3