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Goodrive350 series high-performance multifunction VFD
Communication
-315-
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
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)
9.4.4 Command code 10H, continuous writing
The command code 10H is used by the master to write data to the VFD. The quantity of data to be
written is determined by "Data quantity", and a maximum of 16 pieces of data can be written.
For example, to write 5000 (1388H) and 50 (0032H) respectively to 0004H and 0005H of the VFD
whose slave address is 02H, the structure of the frame is described in the following table.
RTU master command (transmitted by the master to the VFD):
START
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR
02H
CMD
10H
MSB of data writing address
00H
LSB of data writing address
04H
MSB of data quantity
00H