En lish RC-Link
4. Operatin mode of the RC-Link
Trans erring RailCom messages to the PC
The RC-Link transfers the feedback si nals from a maximum of 24 local
RailCom detectors (e. . RCD-1, RCD-2 or RCD-8) to the PC. These
RailCom messa es refer clearly to a particular detector (or track
section) as the detectors are identified by addresses.
Most PC pro rams for model railroadin support feedback by RailCom.
Dependin on the features the PC software is providin the incomin
messa es are displayed on the PC monitor or are used as a basis for
the automatic control of operatin schedules, for example.
Trans erring busy signals to the PC
Many RailCom detectors are desi ned to detect loads in the supervised
rail section not sendin a RailCom si nal, as well. The RC-Link also
transfers these pure busy si nals to the PC.
Per ormance at a breakdown o the track voltage
When a breakdown of the track volta e occurs (e. . after an automatic
cut-off of the track volta e after a short circuit), the detectors cannot
read out and transfer RailCom messa es or busy si nals to the RC-Link.
If the RC-Link would transfer the messa e "track section is disen a ed"
to the PC in this case, failures in operational procedures and accidents
could occur.
In order to meet with this problem, the RC-Link checks via a port for
the connection to the rails if a track volta e is applied. Only when a
track volta e is applied, current disen a ed reports are transferred to
the PC. In case the track volta e breaks down, the (in most cases) false
disen a ed reports are suppressed and the RailCom messa es last
received before the volta e breakdown are saved.
Pa e 8