Difference between revisions of "2-2b. CCTV with relay - Event Handler (practice)"
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=== Exercise === | === Exercise === | ||
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+ | '''CCTV Control''': | ||
+ | * Pressing the call button at the Entrance or at the Gate 2 should generate a call in private ringing mode to the 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). | ||
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Revision as of 14:39, 27 February 2013
Exercise
CCTV Control:
- Pressing the call button at the Entrance or at the Gate 2 should generate a call in private ringing mode to the 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).