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Siemens  Standard application AHU  CE1P3977en_02 
Building Technologies  Detail pages: Inputs and outputs  01.02.2010 
6.6.2  Special settings 
 
–  Read: Levels 4 and 2. 
–  Write: Levels 4 and 2. 
 
 
Parameter  Range  Function 
Out of service   
 
 
 
 
−  Passive 
−  Active 
Take input offline to manually enter a value, e.g. a 
temperature. Manual operation is not automatically 
reset. An alarm can be triggered after a set period 
when the manual alarm function is enabled. 
−  The input is in Auto mode. 
−  Input is out of service: The present value for the 
hardware has not influence on the input. 
Present value  Depends on hardware.  Present value. You can enter a value for out of ser-
vice = active. 
Alarm config   
 
−  enblHighLimit 
−  enblLowLimit 
−  enblOffNormal 
 
−  enblFault 
−  self Release 
 
−  type Alarm 
−  evtOffNormal  
−  evtFault 
−  evtNormal 
−  Done 
Alarm response: Definition of a trigger for an alarm 
event. 
−  Not implemented. 
−  Not implemented. 
−  OffNormal Alarm (alarm, e.g. for logical 1 on in-
put) is enabled. 
−  Fault alarms (Reliability <> 0) are enabled. 
−  Automatic reset of fault and off normal alarms. 
−  Not used. 
−  Not used. 
−  Not used. 
−  Not used. 
−  Assumes changed parameters. See AI ! 
Msg class OffNormal   
 
−  Danger (A) 
−  High (A) 
−  Low (B) 
 
−  Warning (C) 
−  No Alarm 
Defines message class for OffNormal alarms (miss-
ing feedback): 
−  Plant goes to stop. 
−  Plant shuts down. 
−  The impacted plant portion switches off (e.g. the 
heat pump). 
−  Message only. 
−  No alarm. 
Note: This switch must be on No Alarm for all inputs 
not intended to trigger an alarm (e.g. plant switch). 
Msg class fault   
 
−  Danger (A) 
−  High (A) 
−  Low (B) 
 
−  Warning (C) 
−  No Alarm 
Defines message class for fault alarms (reliability <> 
0, value = invalid): 
−  Plant goes to stop. 
−  Plant shuts down. 
−  The impacted plant portion switches off (e.g. the 
heat pump). 
−  Message only. 
−  No alarm. 
Access level 
Parameter 
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 107