INVT Goodrive350-19 Series Operation Manual page 437

Goodrive350-19 series VFD
the query and return strings are the same, and the formats are described in the following tables.
RTU master command:
Sub-function code MSB
Sub-function code LSB
CRC CHK LSB
CRC CHK MSB
RTU slave response:
Sub-function code MSB
Sub-function code LSB
CRC CHK LSB
CRC CHK MSB
10.4.4 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 count", 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 frame structures are described in the following.
RTU master command (sent from the master to the VFD)
START
ADDR
CMD
Data MSB
Data LSB
END
START
ADDR
CMD
Data MSB
Data LSB
END
START
ADDR
CMD
T1-T2-T3-T4 (time gap with a min. length of
T1-T2-T3-T4 (time gap with a min. length of
T1-T2-T3-T4 (time gap with a min. length of
T1-T2-T3-T4 (time gap with a min. length of
T1-T2-T3-T4 (time gap with a min. length of
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Communication protocols
3.5 bytes)
01H
08H
00H
00H
12H
ABH
ADH
14H
3.5 bytes)
3.5 bytes)
01H
08H
00H
00H
12H
ABH
ADH
14H
3.5 bytes)
3.5 bytes)
02H
10H