On ATV320 drive, what would cause register 5202 reading logic input status LI6 not to turn on?

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On a ATV320 drive, what would cause register 5202, reading logic input status LI6, not to turn on?

Issue:
Register 5202, reading logic input status LI6, is not to turning on when the input is energized.

Product Line:
ATV320 drive

Environment:
All

Cause:
LI6 status is not showing up on register 5202 logic input status.

Resolution:
Reading address 5202 over Canopen or modbus and bit 5 for LI6 is not turning on.

When inputs are wired for SOURCE;
Verify the SW1 switch is in SOURCE position.
Verify the input by measuring LI6 - COM for 24Vdc.
Verify the SW2 switch is in DI6 position.