User Guide
Table Of Contents
- Table of Contents
- How to Use This Manual
- Chapter 1–Program Methodology
- Overview
- Introduction to PPCL
- PPCL Rules
- PPCL Program Design Guidelines
- Relational Operators
- Logical Operators
- Arithmetic Operators
- Arithmetic Functions
- Special Functions
- Order of Precedence
- Resident Points
- Local Variables
- Point Priority Overview
- At (@) Priority Status Indicators
- Point Status Indicators
- Converting a Sequence of Operation intoProgram Code
- Chapter 2–Control OptionComparisons
- Chapter 3–Command Syntax
- Overview
- ACT (Activate lines)
- ADAPTM (Adaptive control, multiple)
- ADAPTS (Adaptive control, single)
- ALARM (Alarm state)
- AUTO (Auto status)
- DAY (Day mode)
- DBSWIT (Dead band switch)
- DC (Duty cycle)
- DCR (Duty cycle routine)
- DEACT (Deactivate lines)
- DEFINE (Define abbreviation)
- DISABL (Disable lines)
- DISALM (Disable alarm)
- DISCOV (Disable COV)
- DPHONE (Disable phone)
- EMAUTO (Emergency, Auto status)
- EMFAST (Emergency, Fast status)
- EMOFF (Emergency, Off status)
- EMON (Emergency, On status)
- EMSET (Emergency, set value)
- EMSLOW (Emergency, Slow status)
- ENABLE (Enable lines)
- ENALM (Enable alarm)
- ENCOV (Enable COV)
- EPHONE (Enable phone)
- FAST (Fast status)
- GOSUB (Go to subroutine)
- GOTO (Go to line)
- HLIMIT (High limit)
- HOLIDA (Holiday)
- IF/THEN and IF/THEN/ELSE (Conditional control)
- INITTO (Initialize totalized value)
- LLIMIT (Low limit)
- LOCAL (Local variable)
- LOOP (Loop control)
- MAX (Maximum value)
- MIN (Minimum value)
- NIGHT (Night mode)
- NORMAL (Normal operating mode)
- OFF (Off status)
- OIP (Operator interface program)
- ON (On status)
- ONPWRT (On after power return)
- PDL (Peak demand limiting)
- PDLDAT (PDL, define load attributes)
- PDLDPG (PDL, digital point group)
- PDLMTR (PDL, meter monitor)
- PDLSET (PDL, setpoints)
- RELEAS (Release)
- RETURN (Return/end subroutine)
- SAMPLE (Sample a statement)
- SET (Set point value)
- SLOW (Slow status)
- SSTO (Start/stop time optimization)
- SSTOCO (SSTO coefficients)
- STATE (State text command)
- TABLE (Table of coordinates)
- TIMAVG (Average over time)
- TOD (Time of day, digital points)
- TODMOD (TOD modes)
- TODSET (Time of day, analog points)
- WAIT (Wait time)
- Overview
- Glossary
- Appendix A—PPCL Reserved WordList
- Index
Command Syntax
Siemens Building Technologies, Inc. 3-103
ccoef3 Cooling transfer coefficient. The time, in hours, required to
lower the zone temperature one degree with outside air
dampers closed and the outside temperature 10 degrees
higher than the desired zone temperature for the cooling
season.
• This value must be entered in fractions of an hour.
ccoef4 Cooling auto-tune coefficient. The time, in hours, added to or
subtracted from the adjusted time (ast or asp) in the SSTO
command as part of the self-tuning feature.
• This value must be entered in fractions of an hour.
htemp Desired zone temperature for heating season.
• This parameter can be a floating point (decimal)
number, an integer, a point name, or a local variable.
hcoef1 Heating coefficient. The time, in hours, required to raise the
zone temperature one degree while ignoring external load
factors.
• This value must be entered in fractions of an hour.
hcoef2 Heating retention coefficient. The time, in hours, required to
lower the zone temperature one degree with the heating
equipment off, outside air dampers open, and the outside
temperature 25 degrees lower than the desired zone
temperature for the heating season.
• This value must be entered in fractions of an hour.
hcoef3 Heating transfer coefficient. The time, in hours, required to
raise the zone temperature one degree with outside air
dampers closed and the outside temperature 25 degrees
lower than the desired zone temperature for the heating
season.
• This value must be entered in fractions of an hour.
hcoef4 Heating auto-tune coefficient. The time, in hours, added to or
subtracted from the adjusted time (ast or asp) in the SSTO
command as part of the self-tuning feature.
• This value must be entered in fractions of an hour.
Use
This command defines the thermal characteristics of a zone based
on the season, indoor temperature, outdoor temperature, and a
variety of heating and/or cooling coefficients that are necessary to
calculate optimal start and stop times.
APOGEE PPCL User’s Manual
3-104 Siemens Building Technologies, Inc.
Example
100 SSTOCO(1,1,ROOM10,OATEMP,75.0, 0.01,0.3,
0.05,0.083,72.0,0.1,0.1,0.2,0.083)
See also
SSTO, TOD, TODMOD