HNC Electric HV350 Series, User Manual

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HV350 Mini Frequency Inverter User Manual
121
06H or 08H.
02 Invalid data address:
Data address is invalid
03 Invalid data setting
Data value is invalid.
04 Invalid command:
In current state, the drive can not execute this command.
09 Wrong CRC check
11 Reserved
12 Message characters of the command string is too short
13 Command string is too long, and reading string should be less than 72
characters.
14 Contains non-ASCII character, non-starting character or non-CR, LF end
character.
Additional information
1. Function code conversion
If preset data is n, then sending data n = n
×
(1/increment) (Refer to function
parameters table)
Convert data ―n‖ into HEX number, which is 2 bytes.
2. ASCII mode LRC check
In the example above, LRC check: 01H+03H+02H+00H+00H+01H=07H,
and it‘s complement=F9H.
3. RTU mode CRC check
LRC check is executed from slave address to data end character, and the
operation rule is shown as following:
Step 1: Load a 16-bit register with FFFFH. Call this the CRC register;
Step 2: Execute XOR operation with the first message command and the
lower byte of 16-bit CRC register, and put the result in the CRC register;