Lenze E94AYCET - Manual (Page 39)

Lenze · E94AYCET communication module (EtherCAT®) · Communication Manual · DMS 9.0 EN · 02/2014 · TD17
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6 Commissioning
6.4 Synchronisation with "Distributed Clocks" (DC)
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6.4.4 Process data mode
Code C13892 / C14892 serves to influence the internal PDO processing time of the actual values.
Determinististic mode ( C13892 / C14892 = 1, Lenze setting)
In the deterministic mode, the actual values are copied to the EtherCAT interface with the next
Sync0 event.
Optimised mode ( C13892 / C14892 = 0)
In the optimised mode, the actual values are not copied to the EtherCAT interface with the next
Sync0 event but already 320 μs after the last Sync0 event. Thus, the actual values are provided one
cycle earlier in the EtherCAT interface.
Conditions for the optimised mode:
• The EtherCAT frame generated by the master has a low jitter and is sent within a window of
320 μs after the Sync0 and shortly before the next Sync0 event.
• The EtherCAT cycle time must be 1 ms.
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Note!
• The process data mode is only evaluated with DC synchronisation.
• The setpoints are always processed with the Sync0 event.
• When Lenze EtherCAT controllers are used, we recommend setting the deterministic
mode ( C13892 / C14892 = 1).