TD350 Series VFD Communication protocol
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Detailed parameter description
0: Stop after running once
1: Keep running in the final value
after running once
2: Cyclic running
Simple PLC
memory
selection
0: No memory after power down
1: Memory after power down
Note:
1. The parameters in the P99 group are set by the manufacturer. They cannot be read or modified.
Some parameters cannot be modified when the VFD is running; some cannot be modified
regardless of the state of the VFD. Pay attention to the setting range, unit, and related description
of a parameter when modifying it.
2. The service life of the Electrically Erasable Programmable Read-Only Memory (EEPROM) may
be reduced if it is frequently used for storage. For users, some function codes do not need to be
stored during communication. The application requirements can be met by modifying the value of
the on-chip RAM, that is, modifying the MSB of the corresponding function code address from 0
to 1. For example, if P00.07 is not to be stored in the EEPROM, you need only to modify the
value of the RAM, that is, set the address to 8007H. The address can be used only for writing
data to the on-chip RAM, and it is invalid when used for reading data.
9.4.5.2 Description of other function code addresses
In addition to modifying the parameters of the VFD, the master can also control the VFD, such as start
and stop it, and monitor the operation state of the VFD. The following table describes other function
parameters.
Communication-based
control command
Communication-based
value setting
Communication-based frequency setting (0–
Fmax, unit: 0.01 Hz)
PID setting, range (0–1000, 1000 corresponding
to 100.0%)
PID feedback, range (0–1000, 1000
corresponding to 100.0%)
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