Goodrive350A series high-performance multifunction VFD
Communication
-326-
9.4.5.1 Function code address format rules
The address of a function code consists of two bytes, with the high-order bit on the left and low-order
bit on the right. The high-order bit ranges from 00 to ffH, and the low-order bit also ranges from 00 to
ffH. The high-order bit is the hexadecimal form of the group number before the dot mark, and
low-order bit is that of the number behind the dot mark. Take P05.06 as an example: The group
number is 05, that is, the high-order bit of the parameter address is the hexadecimal form of 05; and
the number behind the dot mark is 06, that is, the low-order bit is the hexadecimal form of 06.
Therefore, the function code address is 0506H in the hexadecimal form. For example, the parameter
address of P10.01 is 0A01H.
Function
code
Name
Description
Setting
range
Default
Modify
Simple PLC
mode
0: Stop after running once
1: Keep running with the final
value after running once
2: Cyclic running
0
–2
0
○
Simple PLC
memory
selection
0: Without memory after
power-off
1: With memory after
power-off
0
–1
0
○
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
in 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 addresses
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. The following table describes
other function parameters.
Function
Address
Data description
R/W
Communication-based
2000H
0001H: Forward running
R/W