Lenze E84DGFCA User Manual download pdf (Page 38)

Process data transfer

38 Lenze · Decentralised frequency inverter 8400 motec (AS-Interface option) · EDS84DMOTASI EN 4.0 - 09/2013

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8 Process data transfer

• Process data are transmitted via the process data channel.

• The process data serve to control the inverter.

• The transmission of process data is time-critical.

• Process data are cyclically transferred between the master and the slaves participating in the

fieldbus (continuous exchange of current input and output data).

• The master can directly access the process data. In the PLC, for instance, the data are directly

assigned to the I/O area.

• Process data are not saved in the inverter.

• Process data are e.g. setpoints, actual values, control words, and status words.

 Note!

Observe the direction of the information flow.

• Process input data (Rx data):

Process data from the inverter (slave) to the host (master)

• Process output data (Tx data):

Process data from the host (master) to the inverter (slave)

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Lenze E84DGFCA User Manual Page 38