Commissioning
If slaves are added manually to the configuration at a later stage, slaves created in the manner described
above are indicated by an arrow, see Fig. “Arrow indicates ESI recorded from OnlineDescription”, EL2521.
Fig.48: Arrow indicates ESI recorded from OnlineDescription
If such ESI files are used and the manufacturer's files become available later, the file OnlineDescription.xml
should be deleted as follows:
• close all System Manager windows
• restart TwinCAT in Config mode
• delete "OnlineDescription0000...xml"
• restart TwinCAt System Manager
This file should not be visible after this procedure, if necessary press <F5> to update
Note
OnlineDescription for TwinCAT 3.x
In addition to the file described above "OnlineDescription0000...xml" , a so called EtherCAT
cache with new discovered devices is created by TwinCAT 3.x (e.g. under Windows 7)C:
\User\[USERNAME]\AppData\Roaming\Beckhoff\TwinCAT3\Components\Base\EtherCAT-
Cache.xml (Please note the language settings of the OS!)You have to delete this file, too.
Faulty ESI file
If an ESI file is faulty and the System Manager is unable to read it, the System Manager brings up an
information window.
Fig.49: Information window for faulty ESI file
Reasons may include:
EL72x1-001050 Version: 2.0
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