Omron NT620S Operation Manual page 204

Outline of Host Link/NT Link Operation
Example of Display Screen Switching
5-1-5 Switching the Screen Display
(by Using the Allocated Bit of a Bit Memory Table)
For the continuous and overlapping screens, refer to the "Classification of
screens" (page 129).
This example operates the PC switch (bit) to switch the NT620S/620C display
screen.
S Support tool settings
Make the following settings with the support tool:
PT status control area:
PT status notify area:
Screen number to be created: Screen No. 2 and No. 3
S PC ladder program
Create a PC ladder program as follows:
00002
00003
11212
Screen switch strobe flag
S Program operation
(1) Screen No. 2 is displayed on the NT620S/620C when bit 00002 turns ON.
(2) Screen No. 3 is displayed on the NT620S/620C when bit 00003 turns ON.
(3) When the screen switch strobe flag turns ON, the number of the currently
displayed screen is read and written to the currently displayed screen word
in the PT status notify area. In this case, the NT620S/620C will not write the
same screen twice.
This section describes the actual procedure used to perform screen switching
under the control of the PC by using bit memory tables.
This function continually reads the allocated bits of the screen switching function
regardless of which screen is currently displayed. Consequently, if the number of
screens that could be switched to with this function is large, PT operations (such
as updating of memory tables, touch switch response, lamp response) may be
delayed.
One of two methods can be used to switch the screen display: registering a
screen number for a touch switch and pressing the touch switch during opera-
tion, or writing the screen number into the PT status control area. For details on
these methods, see "Stand Alone Functions" (page 154) or "Switching the
Screen Display (by Using the PT Status Control Area)" (page 191).
CH 0100
CH 0110
@MOV(21)
Screen number
#0002
Screen switch setting word
100
@MOV(21)
Screen number
#0003
Screen switch setting word
100
@MOV(21)
Screen number
110
Screen switch setting word
100
Section 5-1
(1)
(2)
(3)
193