Lenze E84DGFCR - Manual (Page 46)

Communication manual 8400 motec PROFINET
Parameter data transfer
The acyclic channel (PROFIdrive profile)
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EDS84DMOTPNET EN 2.0 - 11/2011
9.1.2 Acyclic data transmission process
[9-2] Data communication via the acyclic channel
 A "Write.req" is used to transmit the data set (DB47) in the form of a parameter request
to the I/O device.
 "Write.res" confirms the receipt of the message by the I/O controller.
 The I/O controller requests the response of the I/O device with "Read.req".
 The I/O device responds with a "Read.res (-)" if processing is not yet completed.
 After parameter processing, the parameter request is completed by transmitting the
parameter response in the form of a "Read.res (+)" to the I/O controller.
E94YCER011
Write.res
with data (parameter request)
with data (parameter response)
without data
without data
without data
without data
Read.req
Read.res (-)
Read.req
Read.res (+) Parameter response
Parameter request Parameter request
Parameter
processing
Parameter response
IO controller IO device
Write.req (DB47)