Communication
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Example 7: Configuring the process data read from the drive
PROFIBUS Parameter 916 can be used to define which data is
read cyclically from the drive as application-specific process data.
In the example below, drive parameter 1.04 (01h.04h) is selected
to be transmitted by the drive as PZD3. The selection is in force
until it is superseded by another selection.
Subindex (IND) defines which process data word the required
data is transmitted in, and Parameter Value defines which drive
parameter is mapped to that word.
Subsequent response frames:
Req
DP
header
73 94 03 00 00 00 01 04 04 7F 34 15 00 00 00 00 00 00 00 00
DP
trailer
Resp 43 94 03 00 00 00 01 04 03 37 34 15 00 00 00 00 00 00 00 00
Resp
DP
header
xx xx xx xx xx xx xx xx xx xx xx xx 00 0B xx xx xx xx xx xx
DP
trailer
Parameter Value
Parameter Number (916 decimal)
Request (Change parameter value [array])
Subindex (03 = PZD3)*
CW REF
PZD3 PZD4 PZD5 PZD6
*2nd byte reserved
Parameter Value
Parameter Number (916 decimal)
Response (Transfer parameter value [array])
Subindex (03 = PZD3)*
SW ACT PZD3 PZD4 PZD5 PZD6
PZD3 (Value of drive parameter 1.04)
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