Goodrive300 Series VFD Communication protocol
227
Continuous
writing
command
VFD
address
Parameters
address
CRC check
Data
number
01 10 20 00 00 02 4A 08
Example 2: set the ACC time of 01H VFD as 10s and the DEC time as 20s.
ACC time means the time needed if the VFD speeds
up from 0Hz to the Max. One (P00.03).
DEC time means the time needed if the VFD speeds
down from the Max. Output frequency to 0Hz
(P00.03).
Goodrive300 series VFDs define four groups of
ACC/DEC time which can be selected by P05. The
factory default ACC/DEC time of the VFD is the first
group.
Setting range of P00.11 and P00.12:0.0–3600.0s
The corresponding address of P00.11 is 000B, the ACC time of 10s corresponds to 0064H, and the
DEC time of 20s corresponds to 00C8H.
The command sent to the VFD:
Continuous
writing
command
VFD
address
Parameters
address
CRC check
Byte
number
10s 20sData
number
01 10 0400 0B 00 02 00 64 00 C8 F2 55
If the response message is as below:
Continuous
writing
command
VFD
address
Parameters
address
CRC check
Data
number
01 10 00 0B 00 02 30 0A
Note: The space between above commands is for instruction and there is no space between the
commands during actual applications.
10.4.8.4 Modbus communication debugging instance
A PC is used as the host, an RS232-RS485 converter is used for signal conversion, and the PC serial
port used by the converter is COM1 (a RS232 port). The upper computer commissioning software is
the serial port commissioning assistant Commix, which can be downloaded from the Internet.
Download a version that can automatically execute the CRC check function. The following figure
shows the interface of Commix.