Goodrive30 Series VFD Communication protocol
-131-
RTU master command (sent from the
master to the VFD)
RTU slave response (sent from the VFD to
the master)
High-order bit of data
writing address
High-order bit of data
writing address
Low-order bit of data
writing address
Low-order bit of data
writing address
Data content
high-order bit
Data content
high-order bit
Data content
low-order bit
Data content
low-order bit
Note: Sections 7.2 and 7.3 mainly describe the command formats.
7.3.3 Command code 08H, diagnosis
Sub-function code description:
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 formats are described in the following
tables.
Sub-function code
high-order bit
Sub-function
code high-order
bit
Sub-function code
low-order bit
Sub-function
code low-order bit
Data content
high-order bit
Data content
high-order bit
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