CHV180 series frequency inverter special for elevator Communication protocol
.109.
‘8’
LRC CHK Hi
‘5’
LRC CHK Lo
‘9’
END Hi
CR
END Lo
LF
10.7.5 Command code 08H (0000 1000) for diagnosis
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)
Node address 01H
Command 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 reply command is:
START T1-T2-T3-T4 (transmission time of 3.5 bytes)
Node address 01H
Command 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 ASCII request command is:
START
‘:’