IAI America PSEL - Manual (Page 71)

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Part 1 Installation
(10) When the software reset [Confirmation] dialog box appears, click the [Yes (Y)] button to restart the
controller.
(Note) After an absolute reset, be sure to perform a software reset.
(11) As long as no error is present after the restart, the 7-segment LED should show “rdy” if the panel unit
is connected.
(12) This completes the absolute reset.