The MXL-IQ Control Panel from Siemens
Industry, Inc., is an advanced fire protec-
tion and alarm control panel that provides
superior fire protection and multiplexed alarm
reporting.
The MXL-IQ Control Panel can monitor up
to 4 analog loops, each containing up to 60
SIEMENS intelligent devices.
The MXL-IQ Control Panel can control a
wide variety of System outputs, such as:
• Conventional Form C relay contacts
• Solid State outputs
• Supervised outputs to control Alarm
Notification Appliances
• Municipal Tie outputs
• Leased Line outputs
The MXL-IQ Control Panel can process
logical decisions based on the status of
initiating devices. The System can respond
with customer-specified sequences of
output circuit operation.
The System continuously checks all
software and hardware for proper opera-
tion. It continuously checks all System
memory components, control panel
electronic hardware, and the System
program. A hardwire watchdog circuit is
provided to ensure that System programs
are functioning properly. If a problem
develops with the program or processor,
the watchdog circuit places the System into
a trouble condition and resets it.
To ensure reliable operation, the MXL-IQ
System is composed of independent
modules, each with its own microprocessor.
If the main panel’s central processing unit
stops, these modules, operating in default,
still annunciate any alarm or trouble
through common lines called Any Alarm
and Any Trouble. All of the modules
communicate with the MXL-IQ Panel
through a serial communications System.
All modules are continuously supervised
for their presence and for proper operation.
Problems are shown on the display to aid
in servicing and troubleshooting (See Using
the Menu in the OPERATIONS section).
The MXL-IQ System is designed so that
fire alarm operation has first priority over all
other modes of operation. If the System
loses battery and commercial power, it
automatically goes through an initialization
routine when power returns.
The MXL-IQ software was written in a high-
level language for ease of maintenance.
The software incorporates a multitasking
operating system that allows the micropro-
cessor to handle many tasks almost
simultaneously. This enables the MXL-IQ
System to handle communications to all
initiating and output option boards and to
the annunciator. This also enables the
MXL-IQ System to check that everything is
running.
Chapter
11
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INTRODUCTION
SOFTWARE
1-1
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