Omron Programmable Terminals NT631, Operation Manuals

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Screen Display and Notification
Section 8-3
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)
NT631/NT631C
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”.)
[Setting]
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 displayed.
Allocate the bit memory table to the bit in the host.
The screen numbers that can be specified are:
S
0001 to 3999: Screen No. 1 to No. 3999
S
9001: Occurrence history screen
S
9002: Frequency history screen
S
9020: Programming console function screen (expansion function)
S
9999: Return to the previous screen
Reference - To display overlapping screens, specify the screen number of a parent screen.
- The screen is not switched if elements have not been registered to the specified
screen number.
[Operation]
(1) Set the bit in the host to which the bit memory table with the “Switch Screen”
function is allocated to “1” (ON) when switching the screen.
(2) After making sure that the screen has been changed over from the data by
referring to the “screen switch setting” word in the PT status control area or
other data, return the bit in the host to “0” (OFF).
Reference The screen of the NT631/NT631C is switched at the timing the status of the bit to
which the bit memory table is allocated is changed from “0” (OFF) to “1” (ON).
Please note that the screen is not switched if it is changed from “1” (ON) to “0”
(OFF).