Baumer AMG11 N29 Handmatig - Pagina 15

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4.4.2.2.

Synchronization Setup

Go to the Step7 HW-Config window and click on the encoder symbol on the bus rail to select it. Bottom left in

the module window the various encoder modules are shown. Enter the interface properties with a double click

on the „Interface" module.

The „Synchronization"-Tab shows the assignment to a certain sync domain. Realtime (RT) Class1 Mode is

„not synchronized". Set the synchronization role accordingly.

In „RT class", choose between „RT" or „IRT". When „IRT" is selected, the „IRT option" offers „High Flexibility"

(IRT Class2) or „High Performance" (IRT Class3). Settings have to comply with those taken for the controller.

Properties Tab „IO Cycle", area „Update Time" offers settings for the requested Update Time. In relation to

the send clock a reduction ratio „Factor" applies. In case of a reduction ratio the encoder will not update and

send its position value each send clock cycle, but only every 2nd, 4th or 8th cycle. Not every application

needs being updated at the high send clock rate. At a high bus load this reduction may save bandwidth.

Applicable factors may vary with the real time class and send clock and are offered in the drop down area.

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