Microlok II System Startup, Troubleshooting, and Maintenance UNION SWITCH & SIGNAL
SM-6800C Rev. 2.5 September 2000 3-3
The Microlok II CPU continues to execute all non-vital processes including non-vital I/O and
track circuit monitoring. You can tell when the system is in this mode by looking at the
VCOR LED on the power supply front panel. This LED goes out when the power supply
board drops the VCOR relay.
• The system assumes the configuration mode whenever a laptop PC is connected to the
Microlok II CPU board diagnostic port and the configuration section of the Microlok II
Maintenance Tools program (see chapter 4) is accessed. This mode enables startup personnel
to configure various system-level and printed circuit board parameters. While the system is
in the configuration mode, no logic is being processed and all control functions cease.
• The primary purpose of the reset mode is to reset the VCOR relay and the Microlok II system
software following the occurrence of a CPS trip. This mode also provides access to the event
and error logs and some hardware configuration functions. The reset mode must be manually
selected using the CPU board front panel controls. When the CPU board is in the reset mode,
the RESET LED on the CPU board front panel is illuminated.
The on-line mode and the reset mode are supported by unique menu structures (accessed using
the CPU board front panel controls) that provide a number of functions pertinent to the selected
mode.
3.2 NAVIGATING THE RESET AND ON-LINE MENUS
The reset and on-line menus are shown in Figures 3-2 and 3-3 respectively. As seen in these
figures, the reset and on-line menus are similar in structure. Each menu has a main display
message that is the top-most level of the menu. Below the main display message, each menu has
a number of level 1 options. Each level 1 option provides access to other related
options/functions on subsequent levels in the menu.
Navigating through the menus and using the related functions is quite simple. Four 3-position
toggle switches and two 4-character displays, located on the CPU board front panel, are used for
these purposes. Refer to Figure 3-1 for the layout of the CPU board front panel.
The
MENU L-R and MENU UP-DOWN toggle switches are used to move from one menu option to
another:
• To move laterally from one option to another within a level, use the
MENU L-R toggle switch.
Toggling the switch to the R position moves you to the right in the menu; toggling the switch
to the
L position moves you to the left. For example, to move from the VIEW SysLOG option
to the VIEW ERRlog option in the reset menu, toggle the MENU L-R switch to the R position.
• To move from one level to another within a menu, use the
MENU UP-DOWN toggle switch.
Toggling the switch to the DOWN position moves you from a higher level in the menu to the
next lower level; toggling the switch to the up position moves you up one level in the menu.
For example, to move from the VIEW SysLOG option (level 1) to the SysLOG NUM option in
the reset menu, toggle the MENU UP-DOWN switch to the DOWN position.
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