Siemens 125-2134 Owner's Manual page 46

Differential Pressure Monitor Owner's Manual
Datamate Base Software
Operator interface software used with the Portable Operator's Terminal for the purpose of
communicating with the Differential Pressure Monitor, a Terminal Equipment Controller, or a
field panel.
DDC
Direct Digital Control.
DI
Digital Input. Physical point that accepts a two-state signal, such as, ON/OFF,
OPEN/CLOSED, or YES/NO, etc.
DO
Digital Output. Physical point that generates a two-state signal, such as, ON/OFF,
OPEN/CLOSED, or YES/NO, etc.
DPM
Differential Pressure Monitor.
English Units
Foot-pound-second system of units for weights and measurements.
equipment controller
FLN device which provides additional point capacity to a field panel or provides individual
room or mechanical equipment control. The Room Pressurization Controller and Constant
Volume Controller are equipment controllers.
field panel
Device containing a microprocessor for centralized control of system components and
equipment controllers. A field panel samples and processes field data, initiates control
actions, communicates with its operators, and generates reports, displays, and warnings.
Hz
Hertz. Measurement of frequency of alternating current.
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