Specifications

Engineering Standard –NSW
Signalling SMS 02
Cerberus Level Crossing Monitor Equipment
March 2005 Version 1.2 © Australian Rail Track Corporation Page 92 of 118
This document is uncontrolled when printed.
Commissioning and are checked by the Control Centre during either a
Status check, or a Battery test.
These settings can be inspected using the Get information and status,
Get serial port configuration, Get Lamp offsets commands.
Level Crossing Name 39 characters which identify the Level Crossing.
Normally Placename, Streetname St.
Date & Time The current date and time.
Number Monitor Dials 19 characters which give the normal phone
number in Hayes AT command format, that the monitor dials to report a
status change. These are the digits 0 to 9, and dial modifiers ‘,’ for a
pause, ‘P’ for pulse dialling, and ‘T’ for tone dialling. It is recommended
to always start the number with a pause.
Alternate number19 characters which give the alternative phone number
in Hayes AT command format, that the monitor dials to report a status
change. These are the digits 0 to 9, and dial modifiers ‘,’ for a pause, ‘P’
for pulse dialling, and ‘T’ for tone dialling. It is recommended to always
start the number with a pause.
Report Changes PortA Either ENABLED or DISABLED. If ENABLED the
monitor reports any changes of state via serial port A. It is cancelled by
loss of Carrier Detect (CD), or the abort command.
Report Changes PortB Either ENABLED or DISABLED. If ENABLED the
monitor reports any changes of state via serial port B. It is cancelled by
loss of Carrier Detect (CD), or the abort command.
Dial on fault PortA Either ENABLED or DISABLED. If ENABLED the
monitor report any changes of status to either the normal or alternate
phone numbers via the modem connected to serial port A.
Maintenance Disable Either ENABLED or DISABLED. If ENABLED the
maintainer can temporarily disable the Dial of Fault via a 5 second press
of the Reset Fault and Warning button while maintenance is carried out.
Battery offset An offset in the range of 0.0 to 0.5 volts to correct the
battery voltage read by the monitor. Nominally 0.16. The value displayed
may not be the same as the value entered due a conversion in the
monitor software for the A to D. If the value is changed it will be lost
when the monitor restarts and the original fixed value is read from
EPROM.
Modem initialisation string This holds the configuration string for the
particular modem. It may be up to 49 characters long. Refer section 3.8
for details of typical modem initialisation strings.
Operations pin number 5 characters. Normally digits. It is used to protect
certain functions.