Lenze I/O system 1000 - 7.2 Transmitting process data

Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17 326
7 EtherCAT communication
7.2 Transmitting process data
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7.2 Transmitting process data
EtherCAT transfers parameter data and process data between the master and the slaves, which,
depending on their time-critical behaviour, are divided into corresponding communication
channels.
The process data are transmitted by means of "datagrams" via the process data channel.
• The process data controls the I/O channels.
• The transmission of the process data is time-critical.
• Process data are transmitted cyclically between the host system and the I/O system (permanent
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.
• Process data are not stored in the I/O system.
• Process data are e.g. input and output data of the I/O system.
 Note!
The process data size of the I/O area is described by XML device description files.
Import the following two files via an EtherCAT configurator for this purpose:
• EtherCAT bus coupler module: Lenze_IOSystem1000_EPM_S130.xml
• I/O compound module: Lenze_IOSystem1000_EPM_S130_Modules.xml