Difference between revisions of "2-2b. CCTV with relay - Event Handler (practice)"

Revision as of 14:39, 27 February 2013

System configuration

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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 === Exercise ===
-'''Call indication, exercise 1'''
-*When calling G. Galilei a lamp (RCO 4) should be activated when the private ringing starts. (G. Galilei is in “Private” mode).
-*The lamp should be turned off when the private ringing stops.
+'''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).
-'''Call indication, exercise 2'''
-*The customer changes his mind; the lamp should go on when the private ringing starts and stay on also during the conversation. When the conversation ends the lamp should be switched off. If the call is not answered, the relay must drop when the ringing times out. The lamp should not go on when G. Galilei makes a call, only when receiving a call.
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