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 1—Introduction
Principles of Field Panel Operation
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Siemens Industry, Inc.
Owner's Manual
553-104
Building Technologies
2018-10-01
The default TCP/IP port number for Virtual AEM communications is 3001.
You must specify a UDP port number when using multicast optimization. The default
UDP port number is
8.
Network Bandwidth
BACnet/IP or Ethernet TCP/IP (P2) ALN does not add significantly to your network
overhead. Burst conditions for this product occur during:
● Database downloading after coldstart.
● Database uploading.
● Trend data uploading.
● Burst of alarms or COVs.
Data Exchange
BACnet/IP or Ethernet TCP/IP (P2) ALN sends and receives APOGEE data in TCP/IP
packets.
BACnet/IP or Ethernet TCP/IP (P2) ALN synchronizes global data between all devices.
Each device runs a global data replication engine that communicates with peer devices
to:
● Exchange new and changed global data.
● Resolve conflicts when data does not match.
Device Naming Conventions
Field panel DNS node names are limited to 30 characters and cannot contain spaces.
Network Security
BACnet/IP or Ethernet TCP/IP (P2) ALN uses your intranet security within the firewall
and a username/password combination to restrict access outside the firewall. You can
use VLAN to improve internal security.
Principles of Field Panel Operation
The PXC Compact Series gathers information about the environment of your facility, as
well as the equipment it monitors and controls. The PXC Compact receives updated
information, stores information, executes control programs, handles operator
commands and requests, and makes control management decisions. At the same
time, the PXC Compact also translates decisions into actions and allows the operator
to observe those actions. The operator can also override and modify the decisions
made by the PXC Compact.
Gathering and Processing Field Inputs
The PXC Compact samples the information at all field inputs, or points, approximately
once each second, and stores numerical representations of the sampled values.
Under certain conditions, some points require additional handling. The PXC Compact
initiates required actions after these points are checked against previously-entered
configuration data.
Example
A log entry might be required in a point history file every 20 samples, or notification of
an alarm condition could be sent to the operator as a point crossed the alarm
threshold.