3-3
Section
Screen Display and Notification
291
Reference:
S
To display overlapping screens, specify the screen number of a parent screen.
S
The screen is not switched if elements have not been registered to the speci-
fied screen number.
Press the touch switch with the screen switching function when the screen is to
be switched.
Reference:
S
When the screen is changed over, the screen switching strobe of the PT status
notify bit changes to 1 (ON), after the new screen number is written to the
screen switching setting area in the PT status control area, so that the event of
screen switching is notified to the host. After that the screen switching strobe
returns to 0 (OFF) automatically. (Refer to page 295.)
S
When NT30/620 compatible mode is being used, the current screen number
occupies the first word of the PT status notify area and the word containing the
PT status notify bits is shifted down one word. (Refer to page 441.)
Example of Use
Screens other than No. 9999
Screen number 5 is set for touch switch 1
To next screen
When touch switch 1 is pressed
Screen number 5
Screen No. 9999
Screen number
9999 is set for
touch switch 1
Menu Screen
Operation 1
Operation 2
Screen switching
@
Instruction from host
@
Screen switchover key
Touch switch 1 pressed
Previous screen
Switching the Screen by Using the Switch Screen Function of the Bit Memory Table
If this method is used, it is possible to switch the screen by bit operation at the
host.
PC
←
1 (ON)
PT
↑
1
0
Display
Screen No. 3
Bit table 1
Screen No. 3
To be set by the
Support Tool
Allocated bit (bit table 1)
After confirming that the screen
has been switched by the data
at the screen switch setting area
in the PT status control area
Allocated bit (bit table 1)
←
0 (OFF)
(On the PT, the screen number
remains at 3.)
When creating a screen with the Support Tool, set the Switch Screen function in
the bit memory table and specify the screen number of the screen to be dis-
played. Allocate the bit memory table to the bit in the host.
Operation
Setting
electronic components distributor
Summary of Contents for NT21 Series
Page 3: ...iv Downloaded from Elcodis com electronic components distributor...
Page 5: ...vi Downloaded from Elcodis com electronic components distributor...
Page 463: ...Downloaded from Elcodis com electronic components distributor...
Page 465: ...Downloaded from Elcodis com electronic components distributor...