Service manual

118 Encore — Installation and Service Manual
Appendix B — Encore System Interface Guide
Encore to Horizon Protects and Unprotects
Encore control of Horizon only supports All Level Protects and Unprotects.
It does not support soft Locks, hard Locks, force Unlocks, or Lock/Protect
Override.
An Encore issued Protect to a Horizon router is removable using the force
Unprotect feature.
Horizon enforces a time-to-live on all destination protects. Horizon uses an
8-bit protocol and does not utilize text strings for identifying a protecting
device. Also, Horizon cannot query for which device has protected a given
destination (however the Encore Router Control Engine (RCE) does have
this knowledge base).The Horizon system associates a device ID for a
protect that cannot be externally accessed.
The Horizon recognizes the RS-422 (XY) port connection as a single device.
Therefore, a protect issued from the Encore RCE interface will always be
identified as a single issuing device from within the Horizon system; how
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ever, the RCE has knowledge of which device has protected a Horizon Des-
tination.
An Encore issued protect cannot be unlocked or overridden by any
Horizon device. An Encore issued protect must be removed by the Encore
issuing device or Encore control system.
Protects sent from Encore panels/OUI to Horizon will not be retained after
the Encore SCB is power cycled.
After a SCB power cycle, only protects done from the Horizon panel will be
read back and shown on the Encore Panels/OUI/VSD.
If an Encore panel attempts to unprotect a destination protected by a
Horizon panel, the error message will read as “MatrixLibrary error: Miscel
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laneous error, src '<Undef>' dest <dest name> on level(s):<levels>. Here
the “<Undef>” is only part of the error message text. There is no change on
the OUI status screen and the source name on the OUI/Panels remains cor
-
rect.
Horizon to Encore Protects and Unprotects
A Horizon issued protect cannot be unlocked or overridden by any Encore
device. A Horizon issued protect must be removed by the Horizon issuing
device. If the Horizon router is rebooted or loses connection with the
Encore control system then all protects are lost.
The Horizon does not broadcast Tally status. It must be queried Destination
by Destination in order to receive Tally status information (polling).