User Guide

Command Syntax
Siemens Building Technologies, Inc. 3-87
PDLMTR (PDL, meter monitor)
Unitary pre-APOGEE APOGEE BACnet
  
Syntax
PDLMTR(area,hist,calc,window,plot,warning,mt1, def1,...,mt5,def5)
area Meter area.
• In order for the program to operate correctly, the
same numeric value must be used for the meter area
parameter in the PDLDPG, PDLMTR, and PDLSET
statements.
• This parameter can be an integer (1 to 32,767), a
point name, or a local variable.
hist Historical forecast weighting factor (in percent) for the sliding
window predictions.
• This parameter can be a decimal or integer.
• The weighting factor should be less than 50% to
anticipate demand.
• The recommended value is 30%.
calc Interval (in minutes) for how often demand predictions are
calculated.
• This parameter is usually a decimal or integer, but
can be a point name or a local variable.
• The minimum time allowed is one minute.
window Predictions on the width of the sliding window interval (in
minutes).
• This parameter is usually a decimal or integer, but
can be a point name or a local variable.
• Up to 30 samples can be stored per window.
plot Maximum value for the Time versus Demand plot section of
the PDL Activity Report.
• This parameter can be a decimal, integer, point
name, or a local variable.
• This value should be greater than the highest
setpoint used in PDLSET.
APOGEE PPCL User’s Manual
3-88 Siemens Building Technologies, Inc.
warning Determines if warning messages are issued as predicted
demand nears or exceeds the setpoint.
• Valid values are 0 and 1.
0 = Warning messages disabled
1 = Warning messages enabled
mt1
through
mt5
Logical point names for demand consumption meters.
• This parameter can be an LPACI or analog point.
 When an LPACI points is used, the engineering
units are kWH.
 When an analog point is used, the engineering
units are kW.
def1
through
def5
The default values are used instead of the meter values (mt1
through mt5) when communication is lost or the meters
cannot be read.
• This parameter can be a decimal, integer, point
name, or local variable.
 For historical (latest, best) reading, enter -1
(default value), or enter a constant or a fixed
default value.
 Default values are expressed in kilowatts
(demand) for both analog and pulse inputs.
Use
The PDLMTR command is responsible for the following actions:
• Defining meters by point name.
• Monitoring meters.
• Making demand predictions that are used by the PDLDPG
command.
• Updating report information pertaining to demand and
consumption.
• Deciding when warning messages should be issued.
• Initializing a meter area.
• Defining default meter values.