Only one of the readers on a 7920 DPU works

[Product_Support]

Issue

Only one of the readers on a 7920 DPU works

Environment

7920 DPU

Cause

If you have defined one door in the DPU 7920, and the door’s Exit Reader parameter is set to anything other than "NO," then the second reader port automatically becomes the exit reader.

Resolution

If you have defined two doors in a DPU 7920, neither door can have an Exit Reader defined.