5 sync to sm event timing, Sync to sm event timing, Icture – Baumer ATD User Manual

Page 26: 10 s, Ync to, Event sampling diagram, 11 s, Ample jitter for a, Event operating multi turn encoder, 5sync to sm event timing

EtherCAT

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Baumer Thalheim GmbH & Co. KG

2011-10-04/rnik

Eschwege, Germany

Sync to SM event Timing

In the this operating mode the process data will be sampled and copied subsequently into the Sync Manager
buffer every time the data has been read out by the master, this means that the sampled data is synchronous
to the read out events of the master. One disadvantage of this mode is that for large cycle times the data
may be relative old for a RT system; however data is synchronized to the masters readout event.

Frame n

Frame n+1

Data sampling

process at slave

Cylce time

Cyclic read

by master

Sample +

Cal & copy

Min cylce time

Sample +

Cal & copy

SM3 E

vent

1C33:05

1C33:03

Picture 10 Sync to SM event sampling diagram

Picture 11 Sample jitter for a Sync to SM event operating multi turn encoder.

CH3 not_SM event trigger signal
CH1 Sample + Calc & Copy Signal