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Connection terminals and interfaces
HMI
RJ45 pin assignment
for HMI
8 7 6 5 4 3 2 1
Operating voltage
pin assignment
L
W
pin
ON
ORKS
assignment
MSTP pin assignment
8 / 10
Siemens
Building Technologies
1, 2
3
24 V ~, ⊥,
5
CLA, CLB
+, –,
HMI
USB
Service
Pin
Name
1
CLA
2
CLB
3
AC24V_N
4
AC24V_L
Pin
Name
1
24 V ~
2
⊥
3
Pin
Name
4
CLA
5
CLB
Pin
Name
+
+
–
–
PXG3...
BACnet router for Ethernet - LONWORKS - MS/TP
2 x RJ45 interface for Ethernet
AC / DC 24 V operating voltage
L
W
ON
ORKS
MS/TP interface
RJ45 interface for HMI (PXG3.L only)
USB tool interface
Service button
Description
L
W
A
ON
ORKS
L
W
B
ON
ORKS
AC24V Neutral
AC24V Line max. 500mA
Description
AC 24 V
System neutral
Technical ground
Description
L
W
A
ON
ORKS
L
W
B
ON
ORKS
Description
Data +
Data –
Reference wire
interface (PXG3.L only)
Pin
Name Description
5
nc
Not connected
6
nc
Not connected
7
nc
Not connected
8
nc
Not connected
CM1N9270en_10
2017-10-16
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