ES910.3-A - User’s Guide 36
ETAS Functional Description
4.11.5 Overload for Rapid Prototyping Applications
If the ES930.1 is operated in event mode for the Rapid Prototyping applications,
it is possible in the case of events with very quick succession and frequent occur-
rence that the ES910.3-A can no longer process the data of the ES930.1. The
ES910.3-A discards data of the ES930.1 or data of other ETAS daisy chain mod-
ules that are present at its IO interface. The IO interface of the ES910.3-A to
which the ES930.1 is connected is overloaded.
If the ES910.3-A detects the described overload case, an error bit is set.
To avoid additional overload cases, a new configuration of the ES930.1 is
required which either generates fewer data or increases the time intervals
between the transfer of data. This can also be done, for example, with events
that follow in succession that are not too short or through fewer events.
Short-term Overload
For short-term overload cases, the configuration can be transferred to the
ES930.1 and, with according configuration, the overload situation can be ended.
Permanent overload
If the RP model has ended on the ES910.3-A, the ES930.1 continues to generate
high data volumes due to the configuration that leads to a permanent overload.
For this reason, the XCP connection between the IO interface of the ES910.3-A
and the daisy chain connection of the ES930.1 remains at a constant overload.
Ending the permanent Overload
To end the overload, a change of the configuration of ES930.1 is required. This
cannot be easily accomplished during a permanently lasting overload situation:
• An adjusted RP model containing a new configuration of the ES930.1,
cannot transfer this configuration over the overloaded XCP connection to
the ES930.1.
• The ES930.1 connected to the overloaded IO interface of the ES910.3-A
can neither be accessed from the PC with the configuration program nor
is it possible to perform a "Search for Hardware" with HSP.
The described permanent overload event can only be terminated,
• if the ES930.1 is disconnected from the IO interface of the ES910.3-A,
connected directly with the PC and reconfigured, or
• if the source of the overload at the ES930.1, which generates the events
at the digital input, is switched off or removed from the digital inputs and
the module is reconfigured.
An overload event is possible only if the ES930.1 is operated in event mode for
Rapid Prototyping applications.
The overload case described at the IO interface does not impact either the
function or the performance at the other interfaces of ES910.3-A.
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