Chapter 7 Keypad and Related Functions
7-2-10
7.2.7 Display Lock [DISP] Function
 How to prevent the display of keypad from changing by someone?
 When "Display Lock [DISP]" is assigned to any of the "Input terminal function [C001] to [C007]"
and the terminal is turned on, the operator's display becomes the display set in the "Initial
display selection [b038]" and other parameters cannot be displayed.