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
Program Methodology—Point Priority Overview
Siemens Building Technologies, Inc. 1-65
Table 1-6. APOGEE and pre-APOGEE Point Priorities.
Command Description
OPER
(Operator)
The highest priority level. OPER priority
indicates the PPCL program is overridden
and an operator is responsible for
commanding the point. A point in OPER
must be changed to a lower priority before
PPCL can resume control of the point. This
change in priority is called releasing the
point.
SMOKE
A program that monitors smoke alarms is
commanding the point. Points in SMOKE
priority can be commanded by operations
with OPER or SMOKE priority.
EMER
(Emergency)
A program that controls the point during
emergencies is commanding the point.
Points in EMER priority can be commanded
by operations with OPER, SMOKE, or
EMER priority.
Highest
Priority
PDL
(Peak
Demand
Limiting)
A Peak Demand Limiting (PDL) program
commands the point. Points in PDL priority
can be commanded by operations with
OPER, SMOKE, EMER, or PDL priority.
Lowest
Priority
NONE
The lowest priority level. Any PPCL program
or application can command the point.
Table 1-6 explains the BACnet command priorities and shows how
they relate to the APOGEE point priority levels.
APOGEE PPCL User’s Manual
1-66 Siemens Building Technologies, Inc.
BACnet Priority Array
APOGEE BACnet firmware uses the Priority Array to determine the
command order for a point. The array contains sixteen slots plus a
Relinquish Default slot. BN01 is the highest position in the array, and
Relinquish Default is the lowest.
Any level in the priority can be commanded at any time. If the
Present Value of the point is at a higher priority slot, the command
will not be executed. Unlike the APOGEE Point Priority, the Priority
Array retains all commands made at lower priority slot levels. When
the Present Value drops to that slot level, the stored point command
is executed.
NOTE: The Insight workstation does not save or restore the
Priority Array. After a download from the Insight
workstation, all points are at their Relinquish Default
value.
For more information on BACnet point priorities, see the APOGEE
Field Panel User’s Manual (125-3000).
Table 1-7 explains the BACnet command priorities and shows how
they relate to the APOGEE point priority levels.