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EDS84DMOTPNET EN 2.0 - 11/2011 L 45

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

controller

IO device

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Lenze E84DGFCR Bedienungsanleitung Seite 45