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Siemens
PXM20 / PXM20-E operator unit
CM110754en_02
Building Technologies
About this manual
17 Dec 2009
1
About this manual
1.1
Target readers
This user guide is intended for those responsible for the HVAC plant
in a building, and for other qualified staff, including service
engineers. It is assumed that the users of the manual will have all
the knowledge and skills needed to carry out the required tasks.
1.2
Contents
The manual starts with a description of the display and control panel
of the PXM20 (BACnet/LonTalk) and PXM20-E (BACnet/Ethernet/IP)
operator unit and presents the procedures for navigation and for
editing values, which are always the same. The second part of the
manual leads you step by step through the various activities involved
in commissioning and maintaining the plant.
As there may be significant differences between one plant and
another, and between the read and write access of one user and
another, it follows that it is not possible to provide a description
which is generally applicable to every individual case.
"Favorite" objects, for example, are special objects containing
important values, which can be accessed with a short-cut operation.
The question of exactly which objects and which values these are, is
determined in the engineering phase according to the individual
needs of the plant operator.
Important
For this reason, the descriptions in this manual are intended as
examples, designed to clarify the basic operating principles of the
PXM20 operator unit.