Lenze E94AYCER - Manual (Page 57)

Lenze · E94AYCER communication module (PROFINET®) · Communication Manual · DMS 9.0 EN · 12/2013 · TD17
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9 Parameter data transfer
9.1 The acyclic channel (PROFIdrive profile)
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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)