213
application will be mentioned in 10.8 with examples.
10.4.3 Command code 08H for diagnosis
Meaning of sub-function codes
Sub-function Code Description
0000 Return to inquire information data
For example: The inquiry information string is same as the response information string when
the loop detection to address 01H of driver is carried out.
The RTU request command is:
START T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR 01H
CMD 08H
High byte of sub-function code 00H
Low byte of sub-function code 00H
High byte of data content 12H
Low byte of data content ABH
Low byte of CRC ADH
High byte of CRC 14H
END T1-T2-T3-T4 (transmission time of 3.5 bytes)
The RTU response command is:
START T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR 01H
CMD 08H
High byte of sub-function code 00H
Low byte of sub-function code 00H
High byte of data content 12H
Low byte of data content ABH
Low byte of CRC ADH
High byte of CRC 14H
END T1-T2-T3-T4 (transmission time of 3.5 bytes)
10.4.4 The definition of data address
The address definition of the communication data in this part is to control the running of the
inverter and get the state information and relative function parameters of the inverter.