Difference between revisions of "2-2b. CCTV with relay - Event Handler (solution)"
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− | '' | + | * ''Pressing the call button at the Entrance or in the Elevator should generate a call in private ringing mode to the Main Guard.'' |
− | * A relay output to the CCTV system should be activated when the private ringing starts. There is one relay for each substation. | + | * ''A relay output to the CCTV system should be activated when the private ringing starts. There is one relay for each substation.'' |
− | * The relay should stay activate until the call is accepted and the conversation is cancelled. (If the call is not answered, the relay must drop when the ringing times out).'' | + | * ''The relay should stay activate until the call is accepted and the conversation is cancelled. (If the call is not answered, the relay must drop when the ringing times out).'' |
Revision as of 14:42, 27 February 2013
Solution
CCTV Control:
- Pressing the call button at the Entrance or in the Elevator should generate a call in private ringing mode to the Main Guard.
- A relay output to the CCTV system should be activated when the private ringing starts. There is one relay for each substation.
- The relay should stay activate until the call is accepted and the conversation is cancelled. (If the call is not answered, the relay must drop when the ringing times out).