
DIAGNOSTIC TERMINAL (DT) SOFTWARE
_________________________________________________________________________________________________________
6-17
SIG-00-07-11 SEPTEMBER 2012 (REVISED OCTOBER 2019)
Version No.: B.2
The setting for each of these configurable parameters falls into one of two categories; numerical
value or an “
On
/
Off
” option. The Set Parameter screens for both parameter types are shown in
Figure 6-22. After entering the number or selecting the option, click the
Update
button to
activate the new setting.
Figure 6-22 Typical Set Parameter Screens
•
VPI Debounce
The VPI Debounce function is a global setting that is applied to all vital inputs serviced by this
internal I/O module. It sets the period of time a level change must be present on an input before
it can be considered a “Change-of-State”.
Valid VPI Debounce range:
20
to
200
ms (default is
20
ms).
•
Flash Detection
The Flash Detection function is used to configure the physical inputs to detect whether a level
that cycles on and off on the input represents a flashing input.
Valid options are:
On
,
Off
(default is
On
).
When flash detection is on, a new energized / de-energized state will not be reported until it has
persisted for 1 second.
•
Flash Detection Count
The Flash Detection Count setting determines how many on/off cycles are required on the input
before the software determines that the level on the input represents a flashing signal.
Valid Flash Detection Count values:
2
to
8
(default is
3
).
•
ACSES Railroad Line Number (LLL)
Not used in VIU-20 MCF.
•
Password Access
The internal I/O module for slot 1 also controls password access for changing VIU parameters.
The Password Access function determines whether or not a password is required.
Password Access options:
ON
= password required.
OFF
= no password required (default is
OFF)
.