Error Message Response - IMO HD2 IP Series Instruction Manual

HD2 IP55 High-ingress Protection Series Inverter
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 inverter returns an error
message response.
Error message responses are transmitted by the inverter to the master. The following table
describes the codes and definitions of the error message responses.
Code
01H
02H
03H Invalid data bit
04H
05H Password error
06H
07H
08H
09H
When returning a response, the device uses a function code domain and fault address to
indicate whether it is a normal response (no error) or exception response (some errors occur).
In a normal response, the device returns the corresponding function code and data address or
sub-function code. In an exception response, the device returns a code that is equal to a
normal code, but the first bit is logic 1.
For example, if the master device transmits a request message to a slave device for reading a
Name
The command code received by the upper computer is not allowed
to be executed. The possible causes are as follows:
Invalid
The function code is applicable only on new devices and is not

command
implemented on this device.
The slave is in the faulty state when processing this request.

For the inverter, the data address in the request of the upper
Invalid data
computer is not allowed. In particular, the combination of the
address
register address
and the number of the to-be-transmitted bytes is invalid.
The received data domain contains a value that is not allowed. The
value indicates the error of the remaining structure in the combined
request.
Note: It does not mean that the data item submitted for storage in
the register includes a value unexpected by the program.
Operation The parameter is set to an invalid value in the write operation. For
failure example, a function input terminal cannot be set repeatedly.
The password entered in the password verification address is
different from that set in P07.00.
The length of the data frame transmitted by the upper computer is
Data frame
incorrect, or in the RTU format, the value of the CRC check bit is
error
inconsistent with the CRC value calculated by the lower computer
Parameter The parameter to be modified in the write operation of the upper
read-only computer is a read-only parameter.
Parameter
cannot be The parameter to be modified in the write operation of the upper
modified in computer cannot be modified during the running of the inverter.
running
A user password is set, and the upper computer does not provide
Password
the password to unlock the system when performing a read or write
protection
operation. The error of "system locked" is reported.
Definition
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