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Commissioning/configuration of IO-Link master/device
EPI3xxx, ERI3xxx
38
Version: 1.2
Device selection based on revision, compatibility
The ESI description also defines the process image, the communication type between master and
slave/device and the device functions, if applicable. The physical device (firmware, if available) has
to support the communication queries/settings of the master. This is backward compatible, i.e.
newer devices (higher revision) should be supported if the EtherCAT master addresses them as an
older revision. The following compatibility rule of thumb is to be assumed for Beckhoff EtherCAT
Terminals/Boxes:
device revision in the system >= device revision in the configuration
This also enables subsequent replacement of devices without changing the configuration (different
specifications are possible for drives). Example: If an EL2521-0025-
1018
is specified in the configu-
ration, an EL2521-0025-
1019
or higher (-
1020
, -
1021
) can be used in practice.
If current ESI descriptions are available in the TwinCAT system, the last revision offered in the se-
lection dialog matches the Beckhoff state of production. It is recommended to use the last device re-
vision when creating a new configuration, if current Beckhoff devices are used in the real applica-
tion. Older revisions should only be used if older devices from stock are to be used in the applica-
tion.
Fig. 39: correction dialog with modifications
Once all modifications have been saved or accepted, click “OK” to transfer them to the real *.tsm
configuration.
5.1.3
Configuration via TwinCAT - explanation tabs
In the left-hand window of the TwinCAT System Manager, click on the IO-Link Box branch you wish to
configure.
Summary of Contents for EPI3 Series
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