NE200/300 Series Drive User Manual
208 Appendix A Modbus Communication Protocol
Examples for abnormal codes:
Error Code Definition
01H
Illegal function code: is not
03H,06H,10H,08H
02H Register address error
03H Register number error
21H Data error: beyond data limit
22H
Error when data is written:
The register is not written when the drive
is running, or writing data to the only
read-out register address.
·Data is written during EPPROM fault.
·Data is written when data is edited by
keypad.
23H
Data is written when the drive is under
voltage.
24H CRC check error
3. Drive Register Address Distribution
1) The corresponding relationship between the function codes of the
drive and the Modbus protocol register address. The bytes at higher orders
refer to function code group number + 1, the bytes at lower orders refer to
function code number, express with HEX a decimal. For example, the
modbus register address of function code F0.02 is 0102H. The parameters
are saved upon power failure when the highest bit of the register address is
set. For example, when the register address 8012H is written, the parameter
F0.02 is saved to EEPROM.
Note: The life of EEPROM is about 100000 times, if change setting
frequency frequently, several days or several weeks may damage EEPROM,
adopt write RAM, it can avoid to damage EEPROM.
2)The other parameter registers address
To Next Page
Loading...
