7EN02-0390-03

Disabling serial communications using the meter webpages

You can disable serial communications ports (COM1 or COM4) through the meter webpages.

Disabling unused ports is considered a cybersecurity best practice to help minimize unauthorized access to your meter.

  1. Open a web browser and enter your meter’s IP address in the address box. The webpage login prompt is displayed.
  2. Enter your login credentials.
  3. Navigate to Setup > Serial Port and expand the Basic Settings section.
  4. Choose COM1/ RS485#1 - Protocol or COM4/ RS485#2 - Protocol from the drop-down list box and select None to disable the port.
  5. Click Apply. When prompted, click Yes to save the changes.
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