Siemens Climatix Series Basis Document page 105

Access level
Parameter
Parameter
BACnet present
Value
Value selector
Value HW
Value comm
Reliability HW
Reliability comm
Disable OffNormal
ToOffNormal
ToFault
ToNormal
Siemens
Building Technologies
6.5.3 Special information
• Read: Levels 6, 4 and 2.
• Write: Read only.
Range
Depends on hardware.
– Hardware
– Comm
– Average
– Minimum
– Maximum.
– PreferedHW
– PrefComm
Depends on hardware.
Depends on hardware.
Depends on hardware.
Depends on hardware.
– Passive
– Active
Day of week, dd.mm.yyyy
hh:mm:ss
Day of week, dd.mm.yyyy
hh:mm:ss
Day of week, dd.mm.yyyy
hh:mm:ss
Basis Document Siemens Climatix Control System
Standard application AHU
BDCX.100820.01GB
Detail pages: Inputs and outputs
Function
Present value on BACnet. Value is frozen for an
alarm.
Displays valid input value for the application:
– Value on hardware input.
– Value from communications.
– Average from values on the hardware input and
communications. An alarm is triggered when one of
the two values are invalid (if enabled).
– Lowest value from the values on hardware input
and from communications. Alarm triggers (if en-
abled), if one of the two values is invalid.
– Highest value from the values on hardware input
and from communications. Alarm triggers (if en-
abled), if one of the two values is invalid.
– Value on hardware input has priority. The value
from communications assumed if invalid. Alarm
triggers (if enabled), if both values are invalid.
– Value from communications has priority. The value
from hardware input assumed if invalid. Alarm trig-
gers (if enabled), if both values are invalid.
Present value for hardware.
Present value from communications.
Present reliability of hardware value.
Present reliability of value from communications.
The OffNormal alarm is disabled. Example: A value
greater than the high limit does not trigger an alarm:
– Alarm is triggered.
– Alarm is not triggered.
Date and time the last off normal alarm occurred.
Data and time last fault alarm (Reliability <> 0) oc-
curred.
Date and time last alarm was reset.
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