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Siemens  Standard application AHU  CE1P3977en_02 
Building Technologies  Detail pages: Inputs and outputs  01.02.2010 
Parameter  Range  Function 
Hardware.  
Value comm  Text abhängig von der 
Hardware.  
Present value from communications. 
Reliability (Basis 
Controller) 
−  OK. 
−  Other 
 
−  Process Error 
−  Config Error 
Reliability state for hardware. 
−  Calibration lacking. Controller must be returned 
to the factory. 
−  Internal fault. 
−  Input not configured. 
Reliability (Extension 
Modul POL 955) 
−  OK. 
−  Other 
Reliability state for hardware. 
−  Calibration lacking. Controller must be returned 
to the factory; internal fault or input not config-
ured. 
Reliability comm  −  OK. 
−  Fault 
Present reliability of value from communications. 
Disable OffNormal   
 
 
−  Passive 
−  Active 
The OffNormal alarm is disabled. Example: An 
alarm is not triggered if alarm input true: 
−  Alarm is triggered. 
−  Alarm is not triggered. 
Enable Value   
 
−  Passive 
−  Active 
Displays enable of software input within the appli-
cation: 
−  Input is disabled. 
−  Input is enabled. 
    ToOffNormal  Day of week, dd.mm.yyyy  
hh:mm:ss 
Date and time the last off normal alarm occurred. 
    ToFault  Day of week, dd.mm.yyyy  
hh:mm:ss 
Data and time last fault alarm (Reliability <> 0) oc-
curred. 
    ToNormal  Day of week, dd.mm.yyyy  
hh:mm:ss 
Date and time last alarm was reset. 
Communication infos   
 
−  Comm OK 
−  ???? 
Information on the communication status for ele-
ments. 
−  No error. 
−  Function not yet available. 
 
 
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 109