Error Message Response - INVT Goodrive350 Series Operation Manual

Goodrive350 series high-performance multifunction VFD
Function
code
P01.21 Restart after power outage
The value specified in "Description" or "Default value" contains one decimal, so the fieldbus scale is
10. If the value received by the upper computer is 50, the value of "Wake-up-from-sleep delay" of the
VFD is 5.0 (5.0=50/10).
To set the "Wake-up-from-sleep delay" to 5.0s through Modbus/Modbus TCP communication, you
need first to multiply 5.0 by 10 according to the scale to obtain an integer 50, that is, 32H in the
hexadecimal form, and then transmit the following write command:
01
VFD
address
After receiving the command, the VFD converts 50 into 5.0 based on the fieldbus scale, and then sets
"Wake-up-from-sleep delay" to 5.0s.
For another example, after the upper computer transmits the "Wake-up-from-sleep delay" parameter
read command, the master receives the following response from the VFD:
01
VFD
address
The parameter data is 0032H, that is, 50, so 5.0 is obtained based on the fieldbus scale (50/10=5.0).
In this case, the master identifies that the "Wake-up-from-sleep delay" is 5.0s.

9.4.7 Error message response

Operation errors may occur in communication-based control. For example, some parameters can
only be read, but a write command is transmitted. In this case, the VFD returns an error message
response.
Error message responses are transmitted by the VFD to the master. The following table describes the
codes and definitions of the error message responses.
Code Name
Invalid
01H
command
02H
Invalid data
Name
0: Restart is disabled
1: Restart is enabled
06 01 14 00 32
Write Parameter
command address
03 02
Read 2-byte
command
data
The command code received by the upper computer is not allowed
to be executed. The possible causes are as follows:
• The function code is applicable only on new devices and is not
implemented on this device.
• The slave is in the faulty state when processing this request.
For the VFD, the data address in the request of the upper
Description
Parameter
data
00 32
Parameter
data
Definition
-321-
Communication
Default
value
49 E7
CRC
39 91
CRC
0