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What do the 3 LED flashing mean on the ATV312?

What do the 3 LED flashing mean on the ATV312?
Issue: 
What do the 3 LED flashing mean on the ATV312?
 
Product Line:
Altivar 312
 
Environment:
All serial numbers
 
Cause:
N/A
 
Resolution:
When the ATV312 is in local mode by pressing and holding the “MODE” button for 3 seconds, the three LEDs (REF, MON and CONF) are strolling.   In order to make parameter changes while in local mode, you have to press and hold the esc key for 2 seconds, the three LEDs (REF, MON and CONF) flash together, meaning the drive is in programming MODE,  while in local mode.  
 
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