Specifications

Engineering Standard –NSW
Signalling SMS 02
Cerberus Level Crossing Monitor Equipment
March 2005 Version 1.2 © Australian Rail Track Corporation Page 81 of 118
This document is uncontrolled when printed.
7. Data Configuration
7.1 Configuration Data Description
7.1.1 Scope of data
Configurable items that need to be defined are:
 Name and date of the permanent configuration data.
 For each digital input, its name.
 For each digital output, and intermediate state, their name and
controlling Boolean expression.
 For each Timer its name, controlling Boolean expression, and
duration in hours, minutes, and seconds.
 For the battery analogue input, its name, fail voltage, and bus
voltage correction.
 For each lamp analogue input, its name, analogue channel
number, number of lamps expected on flasher up, number of
lamps expected on flasher down, flasher input, and a
intermediate state that identifies when the lamps should be on.
 For the battery test current analogue input, its name, analogue
channel number, on current in amperes, off current in amperes.
 Crossing Identification number
 Input/Output configuration. Note that this is not normally changed.
7.1.2 Permanent Configuration data syntax
The configuration data is detailed in three separate text files which
have a common file name and one of the following extensions.
The I/O listing file has the extension ".io". The Configuration file has
the extension ".cfg". The expression file has the extension ".exp".
7.1.2.1 Comments
Anything following a ";" character on a line of text is treated as a
comment and is ignored. Note that a line of text is terminated by a
return.
7.1.2.2 Variable names
Valid characters for variable names
are: upper and lower case letters,
numbers,
and the following characters ( ) . _ - / *