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
Control Option Comparisons—Time-of-Day (TOD)
Siemens Building Technologies, Inc. 2-25
The following TOD commands are defined in the TOD database:
Monday – Sunday
07:00:00 OFF LITE1
18:00:00 ON FAN1
18:00:00 ON LITE1
19:00:00 OFF FAN1
Holiday
10:30:00 OFF LITE1
17:00:00 ON LITE1
The PPCL HOLIDA command defines the following holidays:
100 HOLIDA(4,1,6,14)
The TOD calendar defines the following holidays:
03-May-1994 Holiday
08-Sep-1994 Holiday
Based on these schedules, the following will occur:
• LITE1 operates according to the holiday schedule on four days:
April 1, May 3, June 14, and September 8.
• This causes a problem if LITE1 should only operate on a holiday
schedule of May 3 and September 8.
APOGEE PPCL User’s Manual
2-26 Siemens Building Technologies, Inc.
IF/THEN/ELSE Time-Of-Day
Although Time-Of-Day uses actual commands dedicated to
performing TOD functions, time scheduling can be accomplished
using the IF/THEN/ELSE command.
Example
The following example illustrates TOD scheduling using the
IF/THEN/ELSE command to control the outdoor parking lights for a
building.
The lights must be ON from 7:00 p.m. until 5:00 A.M. The
IF/THEN/ELSE statement for this schedule might look like the
following:
100 C THIS LINE OF CODE TURNS THE LIGHTS
102 C OFF AT 5:00 AM AND ON AT 7:00 PM.
104 C
110 IF(TIME.GT.5:00.AND.TIME.LT.19:00)THEN
OFF(LITES)ELSE ON(LITES)