Goodrive30 Series VFD Communication protocol
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Data content
low-order bit
Data content
low-order bit
7.3.4 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 number", 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)
High-order bit of data writing address
Low-order bit of data writing address
Data number high-order bit
Data number low-order bit
Content high-order bit of 0004H
Content low-order bit of 0004H
Content high-order bit of 0005H
Content low-order bit of 0005H
T1-T2-T3-T4 (time gap with a min. length of
3.5 bytes)
RTU slave response (sent from the VFD to the master)
T1-T2-T3-T4 (time gap with a min. length of
3.5 bytes)
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