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Design effective operator interfaces following ISA-101 HMI standards. Create intuitive displays with proper navigation, color usage, and alarm integration. What You'll Learn:

  • Design display hierarchy
  • Apply HMI standards
  • Create navigation
  • Build effective layouts

Prerequisites:

  • Completed tag configuration
  • Understanding of process flow

On this page:

Table of Contents
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Step 1: Plan Display Hierarchy

Create four-level hierarchy:

Level 1 - Overview:

  • Plant overview
  • Key performance indicators
  • Major alarms

Level 2 - Area:

  • Process area graphics
  • Area trends
  • Local alarms

Level 3 - Detail:

  • Equipment details
  • Control faceplates
  • Detailed trends

Level 4 - Support:

  • Diagnostics
  • Settings
  • Reports

Step 2: Create Main Overview

  1. Displays → Draw → New
  2. Name: Overview
  3. Size: 1920×1080 (Full HD)

Add elements:

  • Plant layout graphic
  • KPI gauges (OEE, Production Rate)
  • Alarm summary bar
  • Navigation buttons

Step 3: Apply Color Standards

Follow ISA-101 color guidelines:

StateColorRGB
Normal/RunningGray190,190,190
StoppedWhite255,255,255
AlarmRed255,0,0
WarningYellow255,255,0
SelectedCyan0,255,255

Configure theme:

  1. Displays → Themes
  2. Create ISA101 theme
  3. Apply to all displays

Step 4: Build Process Graphic

Create area display:

  1. Import P&ID as background
  2. Add dynamic elements:

Tank:

  • Rectangle with level fill
  • Bind fill % to Tank1_Level
  • Add value display
  • Color by state

Pump:

  • Import pump symbol
  • Rotation animation when running
  • Color: Gray (run) / White (stop)

Valve:

  • Two-state symbol
  • Bind to Valve1_Open
  • Add position feedback

Step 5: Create Control Faceplate

Design popup faceplate:

  1. Size: 400×300
  2. Elements:
    • Tag name and description
    • Current value (large font)
    • Setpoint input
    • Mode selector (Auto/Manual)
    • Trend sparkline
    • Open/Close buttons

Step 6: Add Navigation

Create navigation bar:

  1. Fixed position (top or bottom)
  2. Buttons:
    • Home → Overview
    • Areas → Dropdown menu
    • Alarms → Alarm display
    • Trends → Trending
    • Reports → Reports menu

Navigation script:

csharp

@Display.OpenDisplay("Area1_Detail");
// Or with popup
@Display.OpenPopup("Motor1_Faceplate", 400, 300);

Step 7: Build Alarm Banner

Add persistent alarm bar:

  1. AlarmViewer control
  2. Configure:
    • Show: Highest priority active
    • Height: 100 pixels
    • Columns: Time, Area, Description
    • Click to acknowledge

Step 8: Create Templates

Build reusable templates:

Motor Symbol:

  1. Displays → Symbols
  2. Create motor graphic
  3. Add properties:
    • TagPrefix (e.g., "Motor1")
    • ShowFaceplate
  4. Expressions:
    • Running: @Tag.{TagPrefix}_Running
    • Amps: @Tag.{TagPrefix}_Amps

Step 9: Add Situational Awareness

Implement SA features:

  • Analog values as text (not just graphics)
  • Clear alarm indicators
  • Trend sparklines
  • Deviation indicators
  • Performance metrics

Step 10: Test Usability

Validation checklist:

  • All navigation paths work
  • Information hierarchy clear
  • Response time < 2 seconds
  • Color usage consistent
  • Text readable at distance
  • Critical info always visible

Display Performance Tips

  • Limit points per display (< 200)
  • Optimize graphics (vector over bitmap)
  • Minimize animations
  • Use display caching
  • Preload common popups

Best Practices

  • Follow ISA-101 guidelines
  • Consistent navigation
  • Minimize color use
  • Gray backgrounds
  • High contrast text
  • Progressive disclosure
  • Test with operators

Next Steps

  • [Add Elements to Displays] - Advanced controls
  • [Create Canvas Animations] - Dynamic graphics
  • [Create Dashboards] - KPI displays