Difference between revisions of "2-2b. CCTV with relay - Event Handler (practice)"
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=== Exercise === | === Exercise === | ||
− | ''' | + | '''Call buttons''': |
* Pressing the call button at the Entrance or in the Elevator should generate a call in private ringing mode to the Main Guard. | * Pressing the call button at the Entrance or in the Elevator should generate a call in private ringing mode to the Main Guard. | ||
+ | |||
+ | '''Relay control''': | ||
* A relay output to the CCTV system should be activated when the private ringing starts. There is one relay for each substation. Use the outputs 5 and 6. | * A relay output to the CCTV system should be activated when the private ringing starts. There is one relay for each substation. Use the outputs 5 and 6. | ||
* 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 16:11, 27 February 2013
Exercise
Call buttons:
- Pressing the call button at the Entrance or in the Elevator should generate a call in private ringing mode to the Main Guard.
Relay control:
- A relay output to the CCTV system should be activated when the private ringing starts. There is one relay for each substation. Use the outputs 5 and 6.
- 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).