Specifications

Engineering Standard –NSW
Signalling SMS 02
Cerberus Level Crossing Monitor Equipment
March 2005 Version 1.2 © Australian Rail Track Corporation Page 109 of 118
This document is uncontrolled when printed.
File _____GENERIC.exp
000 Generic, Generic Rd 000.00 07/09/94
; GENERIC.EXP Level Crossing expressions
; The 000 in the top line is the level crossing ID number
; each level crossing must be allocated a different ID number ;
; To print this file use courier fonts, do not use TABS when editing
; Modification History
; 17 JUN 94 PJM modified for R3.2 and later code ;
03 JUL 94 added disable for boom switches ; 08
JUL 94 allowed self clearing of no_test ; 07 SEP
94 altered too_long timer
; 18 MAY 95 altered maintenance disable timer ;
; Syntax Description
;
=T
Timer time out timer in ###h ##
m ##s expression is true.(max 255hrs)
;
=L
Lamp channel, number of lamps flasher up, down, flasher i/p.
; =B Battery configuration.
;
=
Steady output.
Output is on when expression is true.
; + Logical OR
;
&
Logical AND
;
!
Logical NOT
;
[]
Grouping
;
*
Identifies an intermediate term ( a result that is not an output)
; ; The rest of the line is a comment and ignored by system.
; Note: Expressions are evaluated in the order that they appear in this file
;**************** WARNING ! WARNING ! WARNING ! *************** ;* This file
should not be altered or modified by un-authorised *
;* personnel. Any modifications to these expressions must be *
;* fully tested before placed in to use!!!!!! *
;****************************************************************
;BEGINNING OF EXPRESSIONS
;**************************************************************** ;
Timer and battery test expressions. DO NOT ALTER.
*TIMER_SHORT =T 4m 30s TIMER_TEST_OP ; minimum timing period for NV timer
*TIMER_LONG =T 5m 30s TIMER_TEST_OP ; maximum timing period for NV timer
*BATT_TEST_TIMER =T 4m 0s TIMER_TEST_OP & BATT_TEST_OP ; battery test timer
*BATT_TEST_FAULT =T 7s TIMER_TEST_OP & BATT_TEST_OP & !*TEST_CURRENT_HIGH
*BATT _RELAY _FAULT=T 3s [!TIMER _TEST _OP +!BATT _TEST _OP] &!BATT _TEST _IN
;****************************************************************
; Reset of LX_fault or LX_warning
; This expression combines the front panel PB with the remote terminal reset
*RESET = LOCAL_PB_RESET + *REMOTE_RESET
; Temporary Maintenance disable of reporting status if allowed.
*MAINT_ON =T 5s LOCAL_PB_RESET ; Requires long button press
*MAINT_TIMEOUT =T 45m 0s *MAINT_DISABLE ; disable reporting of changes
*MAINT_DISABLE = !*MAINT_TIMEOUT & [*MAINT_DISABLE & !LOCAL_PB_RESET +
*MAINT_ON]
;Site specific expressions which may need alteration to suit the LX
installation
; For CTC areas where the XZR relay is controlling a remote XR the following ;
equation is required to give the equivalent TEST_ZK input to the monitor