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Siemens Building Technologies Basic Documentation RVA63.242, RVA53.242 CE1P2373E
Landis & Staefa Division Description of heating engineer settings 26.03.2001
4.72 Display of PPS communication (A6)
Checking the communication with the connected room unit.
The display provides information about the communication status and the type of room
unit connected. Prerequisite is that signal transmission is correct. Also refer to "input
A…" in Index.
Display Unit
- - - No communication
0...255 Device identification
0 0 0 Communication line with a short-circuit
The status of the PPS communication will automatically be displayed on this line. If
communication is error-free, the controller identifies the unit connected by displaying
the identification number.
The connected device displays the identification. The list below shows the various digits
with the associated types of units.
Only digital peripheral devices can be connected to the controller.
82 Digital room unit QAA50
83 Digital room unit QAA70
90 Digital room sensor QAA10
102 BMU (only with A6)
2373Z23
b)
a) Device identification (see list)
b) Selected setting line
• As soon as a device identification appears (digit), the communication is error-free
• If the digit displayed is not one of those listed above, the connected room unit is
incompatible
Within the PPS, a fixed address is assigned to some types of devices:
Room unit 1
BMU 4 (only with A6)
These peripheral devices can only be operated under the respective PPS address.
When connecting a room unit type QAA10, the right polarity of the terminals must be
observed.
Benefit
Description
Setting
Effect
Displays
Identification codes
Example
Notes
PPS address
Important
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