User Manual

18
Fire & Security Products
Siemens Building Technologies Group
1964_a_en_--.doc
07.2001
Datapoint: ALARM RT DELAY (ARD)
This datapoint represents the state of the “Alarm Remote Transmission Delay” within
the area. If the Alarm Remote Transmission Delay is switched off while an alarm event
with RT requirements is pending, the current monitoring times are bypassed and the
remote transmission is activated immediately.
1801/ARD: Addressing
Sector: FIRE
ADF1/2: aaCC (aa = “A” + <area number>,
example: A3CC = Alarm RT delay in area 3)
1801/ARD: Valid states
State Description Valid commands
ON The alarm remote transmission delay of the area is switched on
(normal position).
OFF
OFF The alarm remote transmission of the area is switched off. Cause:
- During an alarm event the “Alarm delay off” button was pressed
on the CT 11. The current RT delays are bypassed and the re-
mote transmission initiated immediately.
- Same as above, but instead of the CT-11 the “R 20 56” telegram
was received from a management system.
---
1801/ARD: State transition diagram
To
From
OFF ON
OFF
---
Alarm
--------------
N 20 55
ON  Off
--------------
Q 20 56
---
1801/ARD: Telegram repertoire MESSAGES
Sector DMS Adr ADF1/2 Sep Data A Data B Priority Text A Text B
W <CCaddr> <adf12> Q 20 56 ANOMALY RT delay alarm Off
W <CCaddr> <adf12> N 20 55 NORMAL RT delay alarm On
1801/ARD: Telegram repertoire COMMANDS
Sector DMS Adr ADF1/2 Sep Data A Data B Text A Text B
W <CCaddr> <adf12> R 20 56 Alarm RT delay Off