8 process data transfer, Process data transfer – Lenze E84DGFCT User Manual
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EDS84DMOTECAT EN 2.1 - 11/2012
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Communication manual 8400 motec EtherCAT®
Process data transfer
8
Process data transfer
Process data are transmitted by means of so-called EtherCAT datagrams
via the
process data channel.
The Inverter Drive 8400 motec is controlled by means of the process data.
Transferring process data is time-critical.
Process data are cyclically transferred between the host (master) and the controllers
(slaves) (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 stored in the I/O area.
A maximum of 10 process data words (max. 20 bytes) can be sent to the master.
A maximum of 8 process data words (max. 16 bytes) can be sent by the master.
Process data are not saved to the Inverter Drive 8400 motec.
Process data are for instance setpoints, actual values, control words, and status words.