CT100 inverter Communication protocol
156
Error code and meaning
The command from master cannot be executed. This
command is only for new version and this version
cannot realize. Slave is in fault state and cannot
execute it.
Some of the operation addresses are invalid or not
allowed to access. Especially the combination of the
register and the transmitting bytes are invalid.
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.
Inverter is busy (EPPROM is in storage)
The password written to the password check address
is not the same as the password set by P7.00.
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.
It only happens in write command. The written data
exceeds the parameter range. The parameter should
not be modified now. The terminal has already been
used.
When the upper computer is reading or writing and
the user password is set without password unlocking,
it will report that the system is locked.
Address definition of communication parameters
It is used to control the inverter operation, inverter status and related parameter
settings.
Read and write function parameters (some function codes cannot be changed,
only for manufacturers to use):
The rules of parameter address of the function codes:
High byte: group number before the radix point of the function code (00 ～ 15)
Group 0 to Group 15
Low byte: the number after the radix point (00～FF)
For example, the parameter address of F13.17 is 0D11H.
To Next Page
