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Interlocking
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BH_LINE_A, BH_CONN, BH_LINE_B
and either
•
AB_TRAFO or
•
ABC_LINE or
•
ABC_BC or
•
A1A2_BS or
•
DB_BUS_A, DB_LINE, DB_BUS_B
and either
•
AB_TRAFO or
•
ABC_LINE or
•
ABC_BC or
•
A1A2_BS
and either
•
AB_TRAFO or
•
ABC_LINE or
•
ABC_BC or
•
A1A2_BS
The selection of the different altarnative above is made during ordering. The selection
of the different standard modules within the control terminal is made by a Function Se-
lector tool included in the CAP configuration tool.
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The interlocking module is implemented per bay, which needs the status indication of
all switching devices of the own bay itself and some switching devices of other bays.
The communication between modules in different bays is performed via the station bus.
For each bay-bay communication direction, there is a need for two communication el-
ements, one for sending and one for receiving. For sending, an Event Function block is
used, and for receiving, a Multiple Command Function block is used.
The command function block supervises the transmission itself. Each communication
error results in a deactivation of the data valid signal in the command function block,
which is used as a condition in the interlocking logic.
The section ³$SSDUDWXV &RQWURO´, describes how the interlocking information is ex-
changed between the bays and also the reservation mechanism.
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&RQWURO
241
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