Siemens QMX2.P33 Manual page 11

To locate the KNX PL-Link plug, see Mechanical design [➙ 3]
Note: Users can select either pair of pins for connection.
NOTICE
Wires are not interchangeable!
The device is protected against faulty wiring, but communications does not work on
interchanged wires. Do not connect the KNX / KNX PL-Link bus to the tool plug, only the
tool.
Tool plug
Connector
RJ45 plug of the tool cable
Connector
Connection diagrams
Operation
R1
N1
Siemens
Pin Description
+ KNX PL-Link (positive)
- KNX PL-Link (negative)
Pin
1
2
3
4
The device - room operator unit
The controller - room automation station
Twisted pair
Description Pin Description
CE+, KNX 5 Voltage 16 V
CE-, KNX 6 Unused
Unused 7 Identification pin
Unused 8 Ground
11
A6V10733768_en--_a
2017-07-28