User Manual

Process data transfer 8

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EDSMF2192IB EN 3.1

8 Process data transfer

ƒ The process data are transmitted by means of "EtherCAT datagrams" ( 39) via the

CoE process data channel.

ƒ By means of the process data the controller is operated.

ƒ The transmission of process data is time−critical.

ƒ Process data are transmitted cyclically between the host system (master) and the

controllers (slaves) (permanent exchange of current input and output data).

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

directly stored in the I/O area.

ƒ Process data are not stored in the controller.

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

words.