Goodrive350 IP55 High-ingress Protection Series VFD
Communication protocol
-279-
LSB of CRC
C5H
MSB of CRC
6EH
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
RTU slave response (transmitted by the VFD to the master)
START
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR
02H
CMD
06H
MSB of data writing address
00H
LSB of data writing address
04H
MSB of to-be-written data
13H
LSB of to-be-written data
88H
LSB of CRC
C5H
MSB of CRC
6EH
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
Note:
The sections 9.4.1 and 9.4.2 mainly describe the command formats. For the detailed
application, see the examples in section 9.4.8 "Read/Write operation example".
9.4.3 Command code: 08H, diagnosis
Sub-function code description
Sub-function code
Description
0000
Return data based on query requests
For example, to query about the circuit detection information about the VFD whose address is
01H, the query and return strings are the same, and the format is described in the following
tables.
RTU master command
START
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR
01H
CMD
08H
MSB of the sub-function code
00H
LSB of the sub-function code
00H
MSB of data
12H
LSB of data
ABH
LSB of CRC CHK
ADH
MSB of CRC CHK
14H
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
RTU slave response
START
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR
01H
CMD
08H
MSB of the sub-function code
00H
LSB of the sub-function code
00H
MSB of data
12H
