Goodrive20-UL Series VFD
Communication protocol
-133-
Function
code
Name
Description
Default
Modify
P00.03
Max. output
frequency
Used to set the max. output frequency of
the VFD. It is the basis of frequency setup
and the acceleration/deceleration.
Setting range: P00.04
–400.00Hz
50.00Hz
◎
See the figures behind the radix point, the fieldbus ratio value of the Max. output frequency
(P00.03) is 100. 100Hz timed by 100 is 10000 and the corresponding hex is 2710H.
The command sent by the master:
Parameters
address
VFD
address
Write
command
CRC check
Parameter data
If the operation is successful, the response may be as below (the same with the command
sent by the master):
Parameters
address
VFD
address
Write
command
CRC check
Parameter data
Note:
the blank in the above command is for illustration. The blank cannot be added in the
actual application unless the upper monitor can remove the blank by themselves.
7.5.3 Examples of continously writing command 10H
Example 1: Make the VFD whose address is 01H run forward at 10Hz. See section 7.4.2
"Description of other function addresses in Modbus", the address of "Communication-based
control command" is 2000H, and 0001H indicates forward running. The address of
"Communication-based frequency setting" is 2001H and 10Hz corresponds to 03E8H. See the
table below.
Function
Address
Data description
R/W
characteristics
Communication-based
control command
2000H
0001H: Forward running
R/W
0002H: Reverse running
0003H: Forward jogging
0004H: Reverse jogging
0005H: Stop
0006H: Coast to stop (emergency
stop)
0007H: Fault reset
0008H: Jogging stop
Summary of Contents for GD20-0R4G-2-UL
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