Read/Write Operation Examples - INVT Goodrive350-19 Series Operation Manual

Goodrive350-19 series VFD for crane
master is to send the request message again or modify the command based on the fault information.
For example, to set the "Running command channel" (P00.01, the parameter address is 0001H) of
the VFD whose address is 01H to 03, the command is as follows:
01
VFD
address
However, the "Running command channel" ranges from 0 to 2. The value 3 is out of the setting range.
In this case, the VFD returns an error message response as shown in the following:
The exception response code 86H (generated based on the highest-order bit "1" of the write
command 06H) indicates that it is an exception response to the write command (06H). The error code
is 04H, which indicates "Operation failure".

10.4.8 Read/Write operation examples

For the formats of the read and write commands, see section 10.4.1 and 10.4.2.
10.4.8.1 Read command 03H examples
Example 1: Read status word 1 of the VFD whose address is 01H. From the table of other function
parameters, we can see that the parameter address of status word 1 of the VFD is 2100H.
The read command transmitted to the VFD is as follows:
01
VFD
address
Assume that the following response is returned:
01
VFD
address
The data content returned by the VFD is 0003H, which indicates that the VFD is in the stopped state.
Example 2: View information about the VFD whose address is 03H, including "Type of current fault"
(P07.27) to "Type of last but four fault" (P07.32) of which the parameter addresses are 071BH to
0720H (contiguous 6 parameter addresses starting from 071BH).
The command transmitted to the VFD is as follows:
03
VFD
address
Assume that the following response is returned:
06 00 01
Write Parameter
address
command
01 86
VFD Exception
address response code
03 21 00
Parameter
Read
address
command
03 02
Number
Read
of bytes
command
03 07 1B
Read
Start
command
address
00 03
Parameter
data
04 43 A3
Error code
00 01
Data quantity
00 03
Data content
00 06
6 parameters in total
-422-
Communication protocol
98 0B
CRC
CRC
8E 36
CRC
F8 45
CRC
B5 59
CRC