User Manual
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Siemens RXL21.1, RXL22.1 Room controllers CM2N3877en_09
Building Technologies 2015-12-23
The RXL2… controllers communicate with other devices via the following interfaces:
• PPS2 interface (proprietary) for the exchange of data with the room units
• Bus (terminals CE+ and CE-) for communication with:
− PX/KNX interface (to Desigo Insight)
− Interface OCI700 (to Synco)
− Other RXL controllers
The tool socket (RJ45) must be connected only by a qualified electrician. The adjacent
terminal may be a live mains voltage conductor.
To facilitate commissioning, the tool Synco ACS can be connected at three different
points (marked (
A) in the diagram) in the plant:
− to the bus cable at any point
− to the RXL2… controller (RJ45 tool socket)
− to the room unit (RJ45 tool socket)
CP–
CP+
Bus
Tool
Bus
Bus
PPS2
RXL2...
Bus
PPS2
CP–
CP+
PPS2
Tool
QAX3...
RXZ90.1
PPS2
PPS2
3877A05 en
Bus
A
A
A
CE–
CE+
CE–
CE+
Bus
USB
ACS
Siemens OCI700
A
C–
C+
B
B
Siemens
connecting cable
Siemens
connecting cable
HandyTool QAX34.3
HandyTool QAX34.3
• The tool socket is a proprietary socket.
A Siemens connecting cable must be used (e.g. PXA-C1).
When connected to Ethernet, the device on the other end may be damaged!
• The ACS tool, even if connected to a tool socket, requires an interface (OCI700).
• The "HandyTool" is connected to the tool socket of the room controller or to the tool
socket of the room unit (QAX3…, RXZ90.1) (
B).
• If you use OCI700 as an interface, it is connected to the service plug of the controller
or of the room unit.
As long as the OCI700 is connected to the service plug, it must be supplied by
the computer via the USB interface. Otherwise the LCD display of the room unit
will turn dark and the controller will switch to addressing mode.
Communication
Connecting the tool
Notes
Caution!