User Manual

48
Fire & Security Products
Siemens Building Technologies Group
1964_a_en_--.doc
07.2001
5.8 Hierarchical level: ELEMENT (controls)
Control devices receive control commands from higher ranking instances and transmit
these to the physical devices.
5.8.1 Structure 1551: Output element without feedback
Abstract representation of a digital output. Activation of the peripheral devices is not
monitored.
1551: Addressing
Sector: PLANT MONITORING
ADF1/2: Based on sequence number
1551: Valid states
State Description Valid commands
INACTIVE
The element is in the ON state (connected into the circuit). The
affiliated digital output is in the quiescent state.
ACTIVE
OFF
ACTIVE
The affiliated digital output is in the active state. INACTIVE
OFF
OFF
The affiliated digital output is in the quiescent state. Incoming
control commands are not processed.
ON
FAULTY
Correct functioning of the element is not assured. The affiliated
digital output is in the quiescent state.
ACKNOWLEDGE
OFF
1551: State transition diagram
To
From
ACTIVE OFF FAULTY INACTIVE
ACTIVE
---
 Off
--------------
Q 68 56
 Active &
Faulty
--------------
U 68 46
 Inactive
--------------
N 68 4D
OFF
--- ---
 On &
Faulty
--------------
U 68 46
 On
--------------
N 68 4D
FAULTY
---
 Off
--------------
Q 68 56
---
 Faulty
-------------
N 68 4D
INACTIVE  Active
--------------
Q 68 4F
 Off
--------------
Q 68 56
 Faulty
--------------
U 68 46
---
1551: Telegram repertoire MESSAGES
Sector DMS Adr ADF1/2 Sep Data A Data B Priority Text A Text B
P <CCaddr> <adf12> U/Q 68 46 FAULT Control device Faulty
P <CCaddr> <adf12> N 68 4D NORMAL Control device Inactive
P <CCaddr> <adf12> Q 68 4F ANOMALY Control device Active
P <CCaddr> <adf12> Q 68 56 ANOMALY Control device Off
1551: Telegram repertoire COMMANDS
Sector DMS Adr ADF1/2 Sep Data A Data B Text A Text B
P <CCaddr> <adf12> R 68 4D Control device Inactive
P <CCaddr> <adf12> R 68 4F Control device Active
P <CCaddr> <adf12> R 68 55 Control device On
P <CCaddr> <adf12> R 68 56 Control device Off
P <CCaddr> <adf12> R 68 86 Control device Acknowledgment (fault)