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Chapter 10. openETCS Model
Initialise Variables for MA Evaluation
Variables
Initialised
Check MA Sections
End of MA
Figure 10.10.: Moving Authority evaluation in Unfitted as gEmbeddedStateMachine graph
acknowledge the transition in this time, the service brake is applied until it is acknowledged.
After the acknowledgement, the oVariableStorage objects used for Mode transitions and Level
switches are set to true and the transition order evaluation terminates.
Since in Unfitted a received MA is only used to ensure a safe transition to the Mode Full
Supervision, the MA evaluation only checks if a received MA still is valid 2 . The result of this
evaluation is stored as Boolean in the oVariableStorage object “MA Valid”.
10.2.4. Staff Responsible Mode
The Staff Responsible Mode corresponds more or less to Unfitted in Subsection 10.2.3, but is
only available in ETCS Application Level 1. The train is mainly moved under the responsibility
of the driver and only few ATP functionality is available. Figure 10.11 represents the model of
the main functionality. Compared to Unfitted, the following additional sub-functionality is
provided:
Distance Supervision
Monitoring of National Values
Ensures that a certain distance 3 is not overpassed in this
Mode. Otherwise, any brake system is activated and oModeGuard
“c42” is set to true. See Figure 10.12.
Monitors any incoming balise telegram for new national
values by using the “New National Values received” oVariableStorage
object. See Figure 10.13.
Balise Linking Supervision Supervises the consistency of the linking of balise groups [89,
p. 10ff]. If an error is detected, the oModeGuard “c36” is
activated via the “Balise Link Error” oVariableStorage object.
See Figure 10.14.
2 by the submitted section length [85, p. 11]
3 normally defined by a national value [85]
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