FleX Controller – User Manual 3
Version 1.0
The interface for the user is an LCD with backlight and a 28-keys keypad to enter/retrieve all information
about the status of the controller’s or traffic application.
ACTIVE LED shows the status of the controller’s traffic application.
A rocker switch is used for turning ON and OFF the controller and AC line fuse holder for a 2A fuse with
front access.
The functionality of the several modules/sub-assemblies which conform the controller unit is described in
the below sections.
2.2 Controller Operating System
The Operating system is Linux with kernel version 2.6.39.4 or newest with the /atc directory mounted into
a NAND memory.
After boot-up the ATC Linux OS is available to run applications and for accessing to the low level drivers
(block, character and network) provided by the kernel. The OS is stored into a FLASH memory; this can
be updated by using the Linux console or Ethernet Ports. A Linux console is configured at power up to a
speed of 115.2Kbps, no parity, 8 bits and one stop bit.
2.3 Enclosure
The FleX Controller is divided in two model lines according of the mounting style (shelf and rack
mounting); both model lines have the same electronics characteristics but different physical dimensions.
The FleX Controller has a modular design composed by a front module, back module, bottom module and
a top cover; the rack version of the FleX Controller also includes two brackets in order to install the
controller onto a rack.
The top cover of the FleX controller is closed and free of any vent or openings to avoid dirt, dust, water or
other debris entering from the top of the unit. Ventilation holes are provided on the sides of the unit in
order to cool the electronics; the design is such that foreign debris and water cannot easily enter case
under normal operation and handling.
The controller is constructed so that it can be shipped easily via common carrier, such as the postal
service, UPS, or Federal Express, without damage and without disassemble or removal of internal
components or sub-assemblies.
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