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Siemens PXM20 / PXM20-E operator unit CM110754en_02
Building Technologies Display and control elements 17 Dec 2009
2 Display and control
elements
2.1 Housing
00262
PXM20
1
3
4
756
2
ESCOK
?
+
–
Figure 2-1 Housing
Key:
1. Display panel (Section 2.2)
2. Direct access keys (Section 2.1.3.1)
3. Alarm LED (Section 2.1.1)
4. Page Up & Page Down keys (Section 2.1.3.2)
5. OK key, <+> and <–> editing keys (Section 2.1.3.3)
6. ESC key (Section 2.1.3.4)
7. <?> key (Section 2.1.3.5)
2.1.1 Alarm LED
When an alarm is tripped in the system, the alarm LED lights up or
flashes, provided a user is logged in. As soon as all alarms have
been acknowledged, the LED stops flashing and remains on
continuously. For further information on alarm signals refer to
Section 7.
When the view restriction option is On, the red Alarm LED lights up
in the event of an alarm even if you are not logged in.
The LED does not flash in response to an event.
Exception
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