• Rough draft

    • Main Display

    Owned by Tim Williams
    Last updated: May 01, 2023
    3 min read

    There are a total of 15 GOTO display buttons on the main page. In addition, there are login, logout, and shutdown buttons as well as a display of the current user (if one is logged in).

    The engineering button will not appear unless you login and have elevated privileges as it contains functions that are restricted to certain personnel.

    Login

    Pressing the Login button will open the Login window. Logging in will allow access for advanced users, such as Engineers and Technicians qualified to work on the GIS. The default user should have all the access needed for operation of the GIS.

    Logout

    Pressing the Logout button will log out the current user. The default user profile will become active.

    Shutdown

    Pressing the Shutdown button will logout the current user and stop the HMI. It will not shut down operation of the GIS.

    Global Interlock Controller

    This GOTO button will open the Global Interlock Control display. This display contains summary information regarding the status of the Global Interlock Controller and Local Interlock Controllers. It shows if the various controllers are on-line, running, safety signed, and/or safety locked. In addition it provides information on the time synchronization, communication, safety instructions, emergency stops, an major permissive signals.

    Controller Status

    This GOTO button will open the Controller Status display. On the Controller Status display you can select which of the controllers information to display.

    Alarm History

    The Alarm History GOTO button will open the GIS Alarm History which display recent alarm messages. Alarm messages do not display for all interlocks as an alarm might only be generated for interlocks that are tripped in specific cases. For example, an alarm is not generated on the removal of trapped key but an alarm is generated on the E-stop button being pressed.

    GIS Permissives

    The GIS Permissives display shows the status of the final control contactor for various devices that are controlled by the GIS. There are two sections to this display that show permissives required for operations and another section for the display of permissives for auxiliary functions.

    Coudé Rotator

    The Coudé Rotator display shows the status of the various signals that control the operation of the Coudé Rotator.

    Telescope Altitude

    The Telescope Altitude display shows the status of the various signals that control the operation of the Telescope Altitude.

    Telescope Azimuth

    The Telescope Azimuth display shows the status of the various signals that control the operation of the Telescope Azimuth.

    Engineering

    This GOTO button will not appear unless you are logged in and have appropriate authorization.

    This will open the engineering screens which contain advanced troubleshooting and over-ride capabilities.

    Enclosure Altitude

    The Enclosure Altitude display shows the status of the various signals that control the operation of the Enclosure Altitude.

    Enclosure Azimuth

    The Enclosure Azimuth display shows the status of the various signals that control the operation of the Enclosure Azimuth.

    Trapped Keys

    The Trapped Key displays shows the status of the trapped key system and the status of the hazardous zones, whether they are locked or not.

    Diagnostics

    The GOTO Diagnostics button opens a screen that allows selection of diagnostic information from the various GuardLogix controllers and the network Stratix Switches. Opening one of the GuardLogix controllers will allow browsing through the various faceplates for Safety Instruction diagnostics. Selection of the network diagnostics will allow browsing of information related to the Stratix Switches.

    Instruments/OSS

    The Instruments/OSS display provides information on the status of safety functions of the Instrument and OSS LICs.

    CIP Sync

    The CIP Sync display provides information on the CIP Sync (PTP) of the various controllers. Information includes grandmaster clock, parent clock, accuracy and offset information.

    Light Path

    The Light Path display provides information on the Light Path safety function. This includes, Aperture Cover, M1 Cover, Safety Shutter, etc. This display also shows pointing information and offset information of the Solar Position Algorithm.