Difference between revisions of "2-2b. CCTV with relay - Event Handler (practice)"
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=== Exercise === | === Exercise === | ||
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| + | '''Call buttons''': | ||
| + | * Pressing the call button at the Entrance or at the SOS Point should generate a call in private ringing mode to the Control Room. | ||
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| + | '''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). | ||
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Latest revision as of 14:10, 20 September 2013
Exercise
Call buttons:
- Pressing the call button at the Entrance or at the SOS Point should generate a call in private ringing mode to the Control Room.
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).