HMI Overview

Main Unit Functions

The main unit features a 3-line LCD, 16 characters per line. Each line displays different information:

• Line 1: Current page name and units

• Line 2: Actual measured data

• Line 3: Available key functions for the current screen

Button Functions

The main unit has 4 buttons. The bottom line of the LCD (Line 3) shows the function of each button. Typically, the buttons are defined as follows:

Button Functions (Click to Expand)

The main unit has four buttons. The bottom line (Line 3) of the LCD displays the current function of each button. Under normal operation, the button functions are as follows:

• Blue Button - Leftmost button: Return, exit, or save settings.

Gray Arrow Buttons:

• Left Gray Button: Page up, increase value, or select item

• Right Gray Button: Page down, decrease value, or select item

• Orange Button: Rightmost button: Enter settings, edit, or confirm selection

Do not hold buttons for extended periods to avoid damage.

Button functions may change depending on the operation context to improve usability or prevent accidental presses.

LCD Three-Color Backlight Function

The system provides a three-color backlight display. The red backlight is only activated when the alarm setting is “On”; if set to “DND (Do Not Disturb)” or “Off”, the backlight will remain off. The meanings of each color are as follows:

1

Green Backlight

• System operating normally

• Displaying real-time information

• All data within normal range

2

Flashing Red Backlight

• Major abnormality (Alarm A) detected

• Refer to the Warning Details page for more information

3

Red Backlight

• Alarm B: User-defined alert condition triggered

• Alarm C: Maintenance reminder condition reached

• Refer to the Warning Details page for more information

4

Orange Backlight

• System operating normally

• Display currently on Settings page, not real-time information

DND (Do Not Disturb) Mode

• System detects abnormalities, but red backlight remains off.

• Example: Alarm-A “4 Off Pipe” triggers no backlight.

• Abnormalities still appear on the Abnormalities page.

• RS485 connection still sends alarm signals.

• OCT output continues to signal alarms if configured.