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Siemens  Standard application AHU  CE1P3977en_02 
Building Technologies  Hardware overview  01.02.2010 
4.5.4  Edit room unit parameters (diagnostic mode) 
 
Room unit parameters for the room unit are edited in diagnostic mode. They impact 
only the room unit where the setting is entered and saved. The following descrip-
tions are therefore directed exclusively toward service personnel.  
 
Use the mode button 
 
to confirm an entry.  
 
Use the On/Off button   to cancel or generally go back to the previous page. 
 
The room unit returns to normal if no entry is made for longer than 1 minute. 
 
The following local parameters can be viewed/edited in diagnostics mode.  
 
1.  Simultaneously press 
 on/off,   minus,   plus and   mode. 
The display goes to the first diagnostic pages; the following is displayed  
•  Software version (3 digit) and  
•  Build number (4 digit).  
 
2.  Press 
 mode. 
The display goes to the parameter 1 KNX connectivity (RO)  
(parameter overview: see following table) 
This parameter cannot be changed (display only). 
 
3.  Select additional parameters (0…9) with 
 minus or   plus. 
Proceed as follows to change a parameter: 
•  Select parameter (
 minus or   plus, parameter flashes). 
•  Press 
 mode (parameter value flashes). 
•  Enter new parameter value with 
 minus or   plus. 
•  Press 
 mode (parameter flashes). 
 
4.  As soon as all parameters are (re-)set: Press 
 on/off until the main page 
appears. 
 
The individual addresses of multiple HMI devices connected to a network can-
not be the same! 
 
No  Room unit parameter/description 
 
001 
 
connectivity (RO) 
The KNX connectivity page displays 
•  OK to indicate that the process bus is active 
This is the cases if any data frames are received over the past 70 sec-
onds.  
•  NG if the process bus is not active. 
 
 
002 
 
individual addresses – Line address (RW) - (X.1.1). 
Address range: 0...15 (is generated automatically, see parameter 9). 
 
 
003 
 
individual addresses – address range (RW) - (1.X.1). 
Address range: 0...15 (is generated automatically, see parameter 9). 
 
 
004 
 
individual addresses – device range (RW) - (1.1.X). 
Address range: 1...252 (is generated automatically, see parameter 9). 
 
 
005 
 
geographic address apartment (RW) - (X.1.1).  
Numbering range for apartment: 1...126. 
Default value set to 5 (only requires change if multiple controllers are oper-
ated with room devices on one bus) see as well Main Index > Integrations > 
Room units Settings > Room zone. 
Diagnostic mode 
 
 
Room device parame-
ters 
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 31