Compax3 Misc - TwinCat Setting - Change Sync Shift Time from Default
It's recommended to change the Sync Shift Time from default of 30% of cycle time to 10-20%. From I/O Devices > Device > EtherCAT > Advanced:
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Distributed Clocks > SYNC Shift Time:
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This prevents an issue where there's a lag in the cycle which affects positioning:
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Note this is using C3_EtherCAT_full_2ms_V204.xml
This file is available on the Compax3 DVD that ships with the products.
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7/16/13 jh