IPE300 series engineering VFD Communication protocol
-282-
T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)
MSB of data writing address
LSB of data writing address
MSB of data to be written to 0004H
LSB of data to be written to 0004H
MSB of data to be written to 0005H
LSB of data to be written to 0005H
T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)
RTU slave response (from the VFD to the master)
T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)
MSB of data writing address
LSB of data writing address
T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)
9.4.5 Data address definition
This section describes the address definition of communication data. The addresses are used for
controlling the running, obtaining the state information, and setting related function parameters of the
VFD.
9.4.5.1 Function code address format rules
The address of a function code consists of two bytes, with the MSB on the left and LSB on the right.
The MSB ranges from 00 to ffH, and the LSB also ranges from 00 to ffH. The MSB is the hexadecimal
form of the group number before the dot mark, and LSB is that of the number behind the dot mark.
Take P05.06 as an example: The group number is 05, that is, the MSB of the parameter address is
the hexadecimal form of 05; and the number behind the dot mark is 06, that is, the LSB is the
hexadecimal form of 05. Therefore, the function code address is 0506H in the hexadecimal form. For
P10.01, the parameter address is 0A01H.
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