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(2)-3: The function using the unsupported port (COM2) is set.
COM1 is the only one port that GP-4301TM has. If COM2 is selected for [Port] in the
[Script] setting, the Display Unit cannot be changed.
Click [Project]->[System Settings]->[Script]. Check the displayed port setting of
Script.
(3)-1: [Master] is selected in [Ether Multilink Settings].
GP-4301TM cannot be a master at the time of Ether multilink connection (can be a
slave only.). If [Master] is selected in [Ether Multilink Settings], the Display Unit
cannot be changed.
After disabling the Ether multilink setting, change the Display Unit.
1.
Click [Project]->[System Settings]->[Display Unit].
2.
In [Ether Multilink Settings] in the [Extended Settings] tab, uncheck [Enable
Ether Multilink].
