Specifications

RailCorp Engineering Manual — Signals — Equipment Manual
Cerberus Level Crossing Monitor Field Equipment Manual TMG E1261
© RailCorp Page 46 of 89
Issued August 2012 UNCONTROLLED WHEN PRINTED Version 2.1
3.1.4.2 Using the MS-DOS Program LX_MAINT
The dial-up modem is connected to serial channel A. Serial channel B is available for on-
site maintenance staff. The maintainers PC is directly connected to the Level Crossing
Monitor serial channel B via a null modem serial cable. The cable must include loopbacks
on the Level Crossing Monitor end. These are DTR to CD, and RTS to CTS. See section
4.2 for further details of the cable required. Normally the PC end of the cable is plugged
into serial port COM2 of the PC.
The level crossing monitors are normally set-up for:
Serial Channel A Serial Channel B
9600 bps 19200 bps
8 data bits 8 data bits
1 stop bit 1 stop bit
no parity no parity
The functions available to a user are menu driven. Some menu items are protected by a
PIN number.
Method 1
a) Power up the PC and plug the serial cable into serial port A or COM1: on the
PC and channel B on the Level Crossing Monitor.
b) Move to the desired directory and type LX_MAINT and press the <enter> key.
c) Press <enter> to clear startup screen.
d) A menu will appear. Type 1 and press <enter> to select the Connect menu.
e) Type 3 and press <enter> to Establish a connection with the level crossing
monitor.
f) A response will be displayed that shows details of the particular Level Crossing
Monitor with which you have established a connection. If a error message
occurs then try the other method.
g) Type ‘Q’ and press <enter> to return to the main menu.
h) Use the menus to find and perform the required tasks.
Method 2
a) Power up the PC and plug the serial cable into serial port A or COM1: on the
PC and channel B on the Level Crossing Monitor.
b) Move to the desired directory and type LX_MAINT and press the <enter> key.
c) Press <enter> to clear startup screen.
d) A menu will appear. Type 1 and press <enter> to select the Connect menu.
e) Type 1 and press <enter> to Set Serial Port on the PC.
f) Type '1' to select serial port 1 (com1:) on the PC.