Operating Instructions
Table Of Contents
- Cyber security disclaimer
- How to Use This Manual
- Chapter 1—Introduction
- Chapter 2—Hardware Features
- 16- and 24-Point Compact Series Diagram
- 36-Point Compact Series Product Diagram
- Supported Point Types
- Compact Series Backup Batteries
- Memory
- Communication Connections
- Compact Series Specifications
- BACnet Compact Series Specifications
- Compact Series Smoke Control Application Requirements
- HOA (Hand-Off-Auto) Upgrade Kits
- PXC Compact on P1
- PXM10S/T Product Overview and Description
- Unitary Equipment Controller
- TX-I/O Product Range Overview
- PX Series Enclosures and Service Boxes
- Chapter 3—Applications
- Chapter 4—Troubleshooting
- Glossary
- Index
Chapter 3—Applications
Powers Process Control Language (PPCL) Control Program and Point Database
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Siemens Industry, Inc.
Owner's Manual
553-104
Building Technologies
2018-10-01
Configuration and Customization
● Custom Welcome Page
● User interface translatable to any browser-supported language
● Ability to customize font sizes and display colors
Powers Process Control Language (PPCL) Control
Program and Point Database
The control programs and point database are stored in RAM. This information can also
be saved or loaded into the PXC Compact using APOGEE Datamate software or
Insight software.
Control Programs
The control programs define all user-defined control logic, calculations, applications,
and so on for the PXC Compact. PPCL is written in an English-based programming
language called Powers Process Control Language (PPCL). It is a powerful
programming language developed specifically for controlling Heating, Ventilating, and
Air Conditioning (HVAC) equipment. Multiple PPCL programs can be run
simultaneously to provide instructions for the PXC Compact to operate equipment,
control system loads, and optimize the system operation.
For a complete description of PPCL and how to use it, see the APOGEE Powers
Process Control Language (PPCL) User's Manual (125-1896). This manual is available
from your local Siemens Industry representative.
Point Database
The PXC Compact Series has the basic capabilities required to control and monitor a
facility. However, the operator (or the installer) must program specific instructions into
the PXC Compact and create databases that are customized for your particular facility.
The databases contain information, such as point names, addresses, schedules, and
alarm information for the equipment being supervised by the PXC Compact.
The PXC Compact uses information from the point database to define each point so
that the firmware and the software know how to evaluate or command the point.
Among the items kept in the point database are the following:
● Location, or address of field inputs/outputs
● Logical point names and descriptions of points
● Point type
● Alarm information
● Current value of a point
● Information to convert analog signals to engineering units (slope and intercept
constants)
The point database is described in detail in the APOGEE P2 ALN Field Panel User's
Manual (125-3019) or the APOGEE BACnet ALN Field Panel User's Manual (125-
3020).