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Siemens Building Technologies
RXZ90.1 – Receiver with PPS2 interface
CA2N1644en
Building Automation
07.2001
Connection terminals
Connecting a commissioning and service tool or service terminal to the tool socket
on the receiver provides access to the connected room controllers.
The bus cable is looped through to the tool socket for this purpose. The bus cable is
not affected by the receiver.
The PPS2 interface is also routed to the tool socket, enabling a service terminal to
be connected.
8
7
6
5
4
3
2
1
C–
C+
CP–
CP+
80085
PPS2 interface, power supply
CP+
1
Device power supply, PPS2 data (positive)
CP–
2
Device power supply, PPS2 data (negative)
Bus connection (looped to tool socket)
C+
3
with LON bus (DESIGO RXC): CLA
C–
4
with LON bus (DESIGO RXC): CLB
5...8
Not used
Tool socket
Standard RJ45 tool socket
Communication
Diagnostic plug
1
3206Z01
2 3 4 5 6 7 8
1 with LON bus (DESIGO RXC): CLA
2 with LON bus (DESIGO RXC): CLB
3
4
5
6
7
CP+
PPS2 data
8
CP–
PPS2 data
Button for installation
Button for installation
Red LED +
Red LED –
Green LED +
Green LED –
Connection diagrams
Connecting the receiver to a DESIGO RXC room controller:
00476
PPS2
Tool
A
R1
B
4
3 1 2
4 3 2
1
C–
C+
CP–
CP+
N1
CP+
CP
–
CLA
CLB
LON-Bus
PPS2
7
8
6 5
C
Twisted pair
R1 RXZ90.1 receiver
N1 RXC… room controller
A Connection for RXT10.1 commissioning and service tool
B Connection for RXT20.1 service terminal with PPS2 interface
C Connection for diagnostic plug
