Tracking Relay Usage on NI Switch Products

• In MAX
  You can track the relay usage of some switch modules by reading the relay count from the EEPROM of the device.  The simplest way to find the count of a particular relay is through the Switch Soft Front Panel. Right-click on your NI-Switch module in Measurement & Automation Explorer (MAX) and select Test Panels.
  
   

  You can access the relay count by either selecting the Relays tab, or going to File»Relay Maintenance and selecting the relay of interest.
   

  
   

• In the LabVIEW environment
  Use niSwitch Get Relay Count to get the number of times the relay has changed from Closed to Open.
  
   

  Often times niSwitch Wait for Debounce is used before niSwitch Get Relay Count to ensure a more accurate count.

  
   

• In C programming
  You can use the function called niSwitch_GetRelayCount. The C function prototype is as follows:
  
  ​ViStatus niSwitch_GetRelayCount (Vi Session vi, ViConstString relayName, ViInt32* relayCount);

Additional Information