Synchronicity mode
The terminal can be operated in three different operation modes. Depending on the operation mode, the process data are synchronized by the terminal at different times and made available to the EtherCAT frame. For further information, please refer to the EtherCAT system documentation chapter Distributed Clocks -> Basic priciples.
The following operating modes are available for selection in the "DC" tab:
Operation mode | Description |
|---|---|
FreeRun / SM Synchron | Cyclic, frame-triggered exchange of process data. An Ethernet frame triggers the process data provision for the next retrieving frame. |
DC Synchronous | Cyclically constant determination of the counter value by the integrated distributed clocks unit. The configuration corresponds to an output module. The local SYNC event is triggered shortly after the passage of the EtherCAT frame. This means that the output data just delivered is output immediately. |
DC-Synchron (input based) | Cyclically constant determination of the counter value by the integrated distributed clocks unit. The configuration corresponds to an input module. The local SYNC event is triggered before the EtherCAT frame. This makes current input data available for onward transport. |