When you use GP-Viewer EX to change the
display unit to a higher security level screen, before terminating
the GP-Viewer connection you should return the display unit to a
screen with a security level that allows operations by the current
panel operator.
When you use GP-Viewer EX to temporarily change to a higher
security level, the panel operator on the display unit logged in at
a lower security level may not be able to run any operations.
If you exit GP-Viewer EX with the display unit at a high security
level, reconnect to the display unit using GP-Viewer EX then change
to a lower security level screen.