9
Parameterization via PROFIdrive dataset 47
Structure of the PROFINET parameter channel
Manual – PROFINET IO Interfaces, Field Distributors
111
9.3.1
Parameterization procedure via dataset 47
Parameter access takes place with the combination of the PROFINET services
WRITE RECORD and READ RECORD. The parameterization request is transferred
to the IO device using the WRITE.request. Then it is processed internally.
The master now sends a READ.request to pick up the parameterization response. The
SEW device sends a positive response READ.response The user data now contains
the parameter setting response of the parameter setting request that was previously
sent with Write.request (see following figure). This mechanism applies to a PROFINET
controller.
The following figure shows the telegram sequence for the parameter access via
READ / WRITE RECORD:
Controller
PROFINET
SEW-Drive
WRITE.req DS47
with data (parameter request)
READ.req DS47
without data
WRITE.res
without data
READ.res(+)
with data (parameter response)
Parameter
Request
Parameter
Processing
Parameter
Response
Parameter
Request
Parameter
Response
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