Ordering 
 
Mechanical design 
The compact construction enables the devices to be mounted on a standard 
mounting rail. 
 
 
 
Front cover  
PXM40-RS... option module  
Plug-in screw terminal block (operating voltage) 
Plug-in screw terminal block (LONWORKS bus, PXC001.D only) 
Network interface RJ45 (BACnet / IP, PXC001-E.D only) 
LED indicators for communication 
LED indicators for device and system status 
Service pin (Network identification) 
RJ45 Interface for operator unit and tool (RJ45, PXC001.D only) 
Plug-in screw terminal block (RS485) 
Plug-in screw terminal block (KNX) 
RJ45 interface (ETS tool for service use) 
RJ45 interface for operator unit or PX KNX tool 
Slider for mounting on DIN rail 
 
PXA40-RS... 
 
RX TX
SERVICE
RX TX
RS232/RS485
KNX
SERVICE
INFO
COMM
LOW BATT
FAULT
RUN
HMI/TOOL
HMI
5
4
CLB
CLA
1 2
3
6
7
8
RS485
RS232
9 10
CE -
SERVICE
KNX
TOOL
CE +
System controllers ( BACnet/LonTalk) 
System controllers (BACnet/IP) 
 
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Siemens  PXC001   System controllers  CM1N9223en_01 
Building Technologies    2014-04-04