INVT GD20-0R4G-2-UL, Руководство по эксплуатации

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Goodrive20-UL Series VFD Communication protocol
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7.4 Data address definition
The address definition of the communication data in this part is to control the running of the
VFD and get the state information and relative function parameters of the VFD.
7.4.1 Function code address format rules
The parameter address occupies 2 bytes with the high bit in the front and the low bit in the rear.
The range of high and low byte are: high byte
—
00
–ffH; low byte
—
00
–ffH. The high byte is the
group number before the radix point of the function code and the low byte is the number after
the radix point. But both the high byte and the low byte should be changed into hex. For
example P05.05, the group number before the radix point of the function code is 05, then the
high bit of the parameter is 05, the number after the radix point 05, then the low bit of the
parameter is 05, then the function code address is 0505H and the parameter address of
P10.01 is 0A01H.
Function
code
Name Description Default Modify
P10.00
Simple PLC
mode
0: Stop after running once.
1: Keep running in the final value after
running once.
2. Cyclic running.
0
○
P10.01
Simple PLC
memory
selection
0: No memory after power-off
1: Memory after power-off
0
○
Note: P29 group is the factory parameter which cannot be read or changed. Some parameters
cannot be changed when the VFD is in the running state and some parameters cannot be
changed in any state. The setting range, unit and relative instructions should be paid attention
to when modifying the function code parameters.
Besides, EEPROM is stocked frequently, which may shorten the usage time of EEPROM. For
users, some functions are not necessary to be stocked on the communication mode. The
needs can be met on by changing the value in RAM. Changing the high bit of the function code
from 0 to 1 can also realize the function. For example, the function code P00.07 is not stocked
into EEPROM. Only by changing the value in RAM can set the address to 8007H. This
address can only be used in writing RAM other than reading. If it is used to read, it is an invalid
address.
7.4.2 Description of other function addresses in Modbus
The master can operate on the parameters of the VFD as well as control the VFD, such as
running or stopping and monitoring the working state of the VFD.