GPIB or Serial Ports Showing as Unknown or Not Present in MAX

Updated Aug 16, 2018

Reported In

Software

  • Measurement & Automation Explorer (MAX)

Driver

  • NI-488.2
  • NI-VISA

Issue Details

I am seeing GPIB interfaces in MAX as Not Present and the serial interfaces as Unknown.

For example:

ASRL1::INSTR “COM1”     Status: Unknown 
ASRLT10::INSTR “LPT1”   Status: Unknown 
GPIB0::1:INSTR          Status: Not Present 

Solution

The following steps may clear the error, attempt steps until issue is resolved.
  1. Clear MAX database
  2. Force reinstall NI-488.2 or NI-Serial driver
  3. Force reinstall NI-VISA
  4. Force reinstall PXI Platform Services (if applicable).

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