Lenze E84AYCER - Manual (Page 49)

EDS84AYCER EN 2.0 - 11/2010
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49
E84AYCER communication manual (PROFINET)
Parameter data transfer
The acyclic channel (PROFIdrive profile)
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 IO device.
 "Write.res" confirms the receipt of the message by the IO controller.
 The IO controller requests the response of the IO device with "Read.req".
 The IO 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 IO 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)