INVT GD270-090-4 - 9.4.5 Data address definition

Goodrive270 series VFD for fan and pump Communication
-277-
9.4.5 Data address definition
This section describes the address definition of communication data. The addresses are used for
controlling the running, obtaining the state information, and setting related function parameters of the
VFD.
9.4.5.1 Function code address format rules
The address of a function code consists of two bytes, with the MSB on the left and LSB on the right.
The MSB ranges from 00 to ffH, and the LSB also ranges from 00 to ffH. The MSB is the hexadecimal
form of the group number before the dot mark, and LSB is that of the number behind the dot mark.
Ta k e P05.06 as an example: The group number is 05, that is, the MSB of the parameter address is
the hexadecimal form of 05; and the number behind the dot mark is 06, that is, the LSB is the
hexadecimal form of 05. Therefore, the function code address is 0506H in the hexadecimal form. For
P10.01, the parameter address is 0A01H.
Function
code
Name Description
Setting
range
Default Modify
P10.00
Simple PLC
mode
0: Stop after running once
1: Keep running with the final
value after running once
2: Cyclic running
0±2 0 ƻ
P10.01
Simple PLC
memory
selection
0: Without power-failure
memory
1: With power-failure memory
0±1 0 ƻ
Note:
 The parameters in the P99 group are set by the manufacturer and cannot be read or modified.
Some parameters cannot be modified when the VFD is running; some cannot be modified
regardless of the VFD status. Pay attention to the setting range, unit, and description of a
parameter when modifying it.
 The service life of the Electrically Erasable Programmable Read-Only Memory (EEPROM) may
be reduced if it is frequently used for storage. 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 Addresses of other Modbus functions
In addition to modifying the parameters of the VFD, the master can also control the VFD, such as
starting and stopping it, and monitoring the operation status of the VFD.