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Siemens  Standard application AHU  CE1P3977en_02 
Building Technologies  Communication  01.02.2010 
Parameter  Range  Function 
 
−  Off 
−  On 
Economy. 
−  Reset locked.  
−  Reset enabled. 
Back2Auto Cmf-Off   
 
 
−  Off 
−  On 
Reset setpoint adjustment and presence for 
change in time switch command from Comfort > 
Off. 
−  Reset locked.  
−  Reset enabled. 
Time format  −  24 h 
–  12 h 
Time format 24 hour or 12 hour clock. 
Room zone  0…..127  Room zone address. This value may only be 
changed if multiple controllers are operated on 
one bus with the room units. 
The value must always be the same as room unit 
parameter 5 (see as well Sec. 4.5 ..please add 
link here). 
Device1 BSP version    Room unit 1 firmware version. 
Device1 comm alarm  −  passive 
−  active 
Present alarm state of communication to room 
unit 1. 
Device2 BSP version    Room unit 2 firmware version. 
Device2 comm alarm  −  passive 
–  active 
Present alarm state of communication to room 
unit 2. 
Process bus    Goes to page with all settings relevant to param-
eterizing the process bus. 
Settings are only required on this page if the 
controller is integrated on the process bus sys-
tem. 
 
 
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 133