9 parameter data transfer, 1 the acyclic channel (profidrive profile), Parameter data transfer – Lenze E84DGFCR User Manual
Page 45: The acyclic channel (profidrive profile), Communication manual 8400 motec profinet, 9parameter data transfer
EDS84DMOTPNET EN 2.0 - 11/2011
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Communication manual 8400 motec PROFINET
Parameter data transfer
The acyclic channel (PROFIdrive profile)
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.
Features
There is always only one parameter request in process (no pipelining).
No spontaneous messages are transferred.
Only acyclic parameter requests exist.
Profile-specific parameters can be read independently of the I/O device state.
9.1.1
Connection establishment of an I/O controller to an I/O 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