Lenze PROFINET 9400 - Parameter Data Transfer; The Acyclic Channel (PROFIdrive Profile)

9 Parameter data transfer
9.1 The acyclic channel (PROFIdrive profile)
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Lenze · E94AYCER communication module (PROFINET®) · Communication Manual · DMS 11.0 EN · 04/2016 · TD17
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9 Parameter data transfer
9.1 The acyclic channel (PROFIdrive profile)
An optional service extension is the acyclic parameter data transfer.
Cyclic and acyclic PROFINET services can be operated simultaneously in the network.
Product features
• There is always only one parameter request in process (no pipelining).
• No spontaneous messages are transferred.
• There are only acyclic parameter requests.
• Profile-specific parameters can be read independently of the I/O device state.
9.1.1 Connection establishment of an IO Controller to an IO device
An I/O controller can always be used to request parameters from an I/O device if the I/O device is in
the "Data_Exchange" state.
[9-1] Data communication via the acyclic channel
E94YCER010
Acyclic channel
Read
Write
IO
controller
IO device