Goodrive350-19 series VFD Communication protocols
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the query and return strings are the same, and the formats are described in the following tables.
RTU master command:
T1-T2-T3-T4 (time gap with a min. length of
3.5 bytes)
T1-T2-T3-T4 (time gap with a min. length of
3.5 bytes)
RTU slave response:
T1-T2-T3-T4 (time gap with a min. length of
3.5 bytes)
T1-T2-T3-T4 (time gap with a min. length of
3.5 bytes)
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)
T1-T2-T3-T4 (time gap with a min. length of
3.5 bytes)
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