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DACA Block Details

DACA Block Documentation

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The DACA block icon is implemented in contexts where a straightforward indication and a cautionary visual representation are required. The block icon image is given below for reference:

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The block icon is dynamic, meaning the color of the icon changes when different alarms are activated:

  1. Low/High Alarm Activation:
    • Upon activation of the low or high alarm, the display color will change.
    • The icon image will start blinking to indicate alert status.
    • After acknowledging the very high or very low alarm, the blinking stops, and the display returns to the standard visual.
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  1. Very Low/Very High Alarm Activation:

    • Upon activation of the very low or very high alarm, the display color will change.
    • The icon image will start blinking to indicate alert status.
    • After acknowledging the high or low alarm, the blinking stops, and the display returns to normal.
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Faceplate Tabs

On clicking the DACA block icon, the DACA faceplate will open.

Only authorized users can access this after logging in.

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Operator Tab – Standard View:

  1. Tag Number: Located in the column highlighted in blue.
  2. Tag Description: A brief description of the tag is shown.
  3. PV (Process Value): Real-time value of the process is displayed.
  4. ACK (Acknowledge Button): Clicking this acknowledges any associated alarms.
  5. Progress Bar: Displays the current PV in a visual format.

On clicking the Adva button, the Adva Tab will open.

Only authorized users can access this after logging in.

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Advance Tab – Standard View:

  1. PV (Process Value): Displays real-time process value.
  2. PV_LO: Lower limit for PV. Editable—click the value, enter a new one, press Enter.
  3. PV_HI: High limit for PV. Editable as above.
  4. PVLL: Very low alarm limit for PV.
  5. PVLO: Low alarm limit for PV.
  6. PVHI: High alarm limit for PV.
  7. PVHH: Very high alarm limit for PV.
  8. Progress Bar: Visual indicator of the PV.

Summary

  • Operators can:

    • View the Oper tab.
    • Acknowledge alarms.
    • Monitor real-time values and progress bar.

  • Engineers can:

    • Access Adva and Diag tabs.
    • Modify PV limits and thresholds.
    • Perform advanced diagnostics and troubleshooting.