Operating Instructions
Table Of Contents
- Cyber security disclaimer
- How to Use This Manual
- Chapter 1—Introduction
- Chapter 2—Hardware Features
- TC Modular Product Diagram
- Expansion Module Product Diagram
- Modular Series Backup Batteries
- Memory
- Communication Connections
- Modular Series Specifications
- Modular Series Smoke Control Application Requirements
- PXM10S/T Product Overview and Description
- 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
588-781
Building Technologies
2018-10-01
Accessories
Product Number
Description
TXA1.K12 One set of address keys, numbers 1-12.
TXA1.K24 One set of address keys, numbers 1-24.
TXA1.K-48 One set of address keys, numbers 25-48.
TXA1.K-72 One set of address keys, numbers 49-72.
TXA1.LLT-P100 Labels for TX-I/O, 100 sheets/pack, letter format.
TXA1.LH Replacement label holders.
Principles of Field Panel Operation
The TC Modular Series gathers information about the environment of your facility, as
well as the equipment it monitors and controls. The TC Modular receives updated
information, stores information, executes control programs, handles operator
commands and requests, and makes control management decisions. At the same
time, the TC Modular 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 TC Modular.
Gathering and Processing Field Inputs
The TC Modular 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 TC Modular
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.
Executing Control Programs
The TC Modular continuously executes a user-defined set of instructions called the
control program. This program uses the most recent point values and the most recent
clock time. The control program does the following:
● Evaluates control strategies.
● Uses an internal calendar and time clock for time-based functions.
● Updates point values and commands field points according to the program results.
● Sends messages or reports to proper terminal locations as needed.
Example
During occupied hours (7:00 A.M. through 5:00 P.M.) a fan:
● Turns ON if the room temperature rises above 80°F (27°C).
● Turns OFF when the temperature drops below 73°F (23°C).
Between 5:00 P.M. and 7:00 A.M. the fan turns OFF regardless of the room
temperature.