Example Of Reading Command 03H; Example Of Writing Command 06H - INVT Goodrive20-EU VFD Series Operation Manual

Goodrive20-EU series VFD

7.5.1 Example of reading command 03H

Example 1: read the state word 1 of the VFD with the address of 01H (refer to the parameter
table of other functions). According to the parameter table, the parameter address of the state
word 1 of the VFD is 2100H.
RTU mode:
The command sent to the VFD:
If the operation succeeds, the response message is as follows:
ASCII mode:
The command sent to the VFD:
If the operation succeeds, the response message is as follows:
The data content is 0003H. According to the parameter table of other functions, the VFD
stops.

7.5.2 Example of writing command 06H

Example 1: make the VFD with the address of 03H to run forward. According to the parameter
table of other functions, the address of "communication control command" is 2000H and
forward running is 0001. See the table below.
Function
instruction
Communication
control
command
VFD
Read
address
command
VFD
Read
address
command
VFD Read
address
command
VFD Read
command
address
Address
definition
2000H
Parameters
Data number
address
Data
Data content
address
Parameters
Data
address
number
Data
Byte
content
number
Data meaning instruction
0001H: forward running
0002H: reverse running
0003H: forward jogging
0004H: reverse jogging
0005H: stop
135
Communication protocol
CRC check
CRC check
LRC
check
LRC
check
R/W
characteristics
W/R