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Section 3 Using PTs
NS Series Programming Manual
3-3 Screen Display and Notification
This section describes how to switch screens displayed on NS-series PTs and how to check the screen
number for the displayed screen.
3-3-1
Switching Screens
Screens can be switched using the following methods.
• Manipulating system memory.
• Pressing a Command Button or Multifunction Object with the Switch screen function.
• Using the alarm/event switch screen function.
• Using the macro function SHOWPAGE or SHOWPAGEBCD.
Manipulating System Memory to Switch Screens
System memory area $SW has words for switching screens.
If a screen number is written to $SW0, the display will switch to that screen.
Screen page numbers 0 to 3,999 are set to $SW0 in BCD (0 to F9F in binary).
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Pop-up screens set to $SW0 will be ignored.
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Non-existent screen numbers set to $SW0 will be ignored.
Manipulating System Memory to Switch Pop-up Screens
Pop-up screens can be switched from the system memory using the following method.
Store the desired pop-up screen page numbers to words $SW1, $SW4, and $SW7.
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Normal screens set to $SW1, $SW4, and $SW7 will be ignored.
3-3 Screen Display and Notification
3-5
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