Goodrive100 inverters
Communication protocol
IKR Aandrijven en Besturen
www.ikr-industries.nl
3. The terminal has already been used.
08H
The parameter
can not be
changed during
running
The modified parameter in the writing of the upper monitor can not be
modified during running.
09H
Password
protection
When the upper monitor is writing or reading and the user password is
set without password unlocking, it will report that the system is locked.
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 inverter 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 inverter (P00.01, parameter address is 0001H) with
the address of 01H to 03, the command is as following:
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 inverter will return fault response message as below:
