Touch Switch Status; Notifying The Pc That A Switch Has Been Pressed - Omron NT30 Operation Manual

Lamps and Touch Switches

5-3-4 Touch Switch Status

Procedure 1. Use the NT-series Support Tool to allocate the touch switch lamp bits to the

5-3-5 Notifying the PC that a Switch Has Been Pressed

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This section describes how to change the statuses of allocated bits and thereby
the statuses of the touch switches displayed by the NT30/30C.
The statuses of touch switches displayed by the NT30/30C are changed by
switching the control bits allocated in the PC memory ON and OFF.
NT30/30C
Lit
Touch switch 1
The status of the lamp bit reflects the touch switch status, as follows:
0 (OFF): Unlit
1 (ON): Lit (inverse display) or flashing
PC memory.
2. When creating the screen data using the NT-series Support Tool, register the
touch switch for a screen.
3. Program the PC to switch the lamp bit of the touch switch ON and OFF.
Set whether a touch switch will be continuously lit or blink when its bit has
been turned ON by setting the NT-series Support Tool touch switch display
attributes.
This section describes how the status of a touch switch (whether it has been
pressed or not) is accessed.
With the NT30/30C, when a touch switch is pressed, the notify bit allocated to
that touch switch in the PC memory is automatically notified.
Touch switch 1
NT30/30C
Depending on the set operation type, the status of the allocated bit for touch
switch status notification will be controlled in tone of the following ways:
Momentary: 0 (OFF)
1 (ON)
Alternate: The allocated bit is switches to 1 (ON) if currently 0, and to 0
(OFF) if currently 1.
Set: The allocated notify bit is switched to 1 (ON).
Reset: The allocated notify bit is switched to 0 (OFF).
Allocated notify bit (touch switch No. 1)
1
. . Not pressed
. . . Pressed
Section 5-3
PC
Allocated bit (touch switch No. 1)
1 1 (ON)
PC