Lenze E84DGFCR Bedienungsanleitung PDF herunterladen (Seite 38)

Communication manual 8400 motec PROFINET

Data transfer

38 L EDS84DMOTPNET EN 2.0 - 11/2011

7 Data transfer

PROFINET transmits parameter data, configuration data, diagnostic data, alarm messages,

and process data between the host (I/O controller) and the controllers that are part of the

fieldbus (I/O devices). Depending on their time-critical behaviour, the data are transmitted

via corresponding communication channels.

Communication channels

 The process data channel transmits process data.

– With the process data the controller is actuated.

– Transferring process data is time-critical.

– Process data are transmitted cyclically between the I/O controller and the I/O

devices that are part of the fieldbus according to the Provider/Consumer model

(continuous exchange of current input and output data).

– The I/O controller can directly access the process data. In the PLC, for instance, the

data are directly assigned to the I/O area.

– The Inverter Drive 8400 motec can exchange a maximum of 8 process data words

(16 bits/word) per direction.

– Process data are not saved in the controller.

– Process data are for instance setpoints, actual values, control words, and status

words.

 Parameter data are transmitted via the acyclic channel.

– In general, the parameter data transfer is not time-critical.

– The access to the parameter data depends on the PROFIdrive profile.

– Examples of parameter data are operating parameters, motor data, and diagnostic

information.

– The acyclic channel provides access to all Lenze codes.

– Parameter changes must be stored via code C00002 of the Inverter Drive 8400

motec.

 Note!

Please observe the direction of the flow of information!

• Process input data (Rx data):

– Process data from the controller (I/O device) to the I/O controller

• Process output data (Tx data):

– Process data from the I/O controller to the controller (I/O device)

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Lenze E84DGFCR Bedienungsanleitung Seite 38