DESIGO building automation system

Operation at the automation level
PXM20 network operator units
The PXM20 and PXM20-E network-compatible operator units allows full operation
of all DESIGO PX automation stations connected to a BACnet network. As a
BACnet client, the PXM20/20-E automatically reads the data from the DESIGO PX
automation stations. It is therefore always up to date and can be replaced while the
system is in operation.
The operator unit has a high-resolution illuminated display for graphics and text,
keys for operation, and a common alarm indicator with an audible signal.
The operator unit can be mounted remotely for compact and modular automation
stations in the control panel door.
The clearly arranged function buttons
and fast access buttons ensure correct
operation, even by inexperienced users.
PXM20 operator unit
Time scheduler
Alarm overview
Online trend
PXM20 / PXM20-E operator functions
• Alarm monitoring with acknowledgement and visual and
audible alarm indication.
• Data point display and operation of all measured values,
setpoints, plant states, operating states and parameters.
• Graphics-based display and operation of time schedules,
exception calendar, online-trend and heating curve.
Graphics-based display of the heating
curve
• User-friendly guidance through
the plant functions.
• Favorites, configurable overview
of main values in the plant.
• Multilevel access protection.
Type summary
PXM20 Operator unit for the automation level. Communication via LonTalk
PXM20-E Operator unit for the automation level. Communication via IP
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Siemens DESIGO Building automation and control system CM110660en_03
Building Technologies
System description