• If switches A, B, and C come ON at the same time,
touch switch D will also come ON due to the touch
switch mechanism.
• If switches A, B, and D come ON at the same time,
touch switch C will also come ON due to the touch
switch mechanism.
A C
BD
Smallest touch switch frame
2-7SectionTouch Switches
120
Reference: Caution on pressing three touch switches
When multiple touch switches are arranged as shown in the example below and
the three are pressed at the same time, a malfunction will occur due to a pecu-
liarity of the touch switch mechanism.
Be careful how you arrange touch switches.
Example: When touch switches are created at positions A and B and at one of
the points of intersection C or D
Functions That Can Be Set for Touch Switches
Any of the following functions can be set for touch switches. For details, refer to
Processing Functions (page 128).
Host Notification Function
When a touch switch is pressed, the status of a bit for notification purposes at the
host (the notify bit) changes.
It may change in any of the four following ways.
Momentary
The notify bit is set to 1 (ON) only while the touch switch is pressed, and returns
to 0 (OFF) when the touch switch is released.
Alternate
Each time the touch switch is pressed, the notify bit is switched to 1 (ON) if cur-
rently set to 0 (OFF), and to 0 (OFF) if currently set to 1 (ON).
Set
When the touch switch is pressed the notify bit is set to 1 (ON).
Reset
When the touch switch is pressed the notify bit is set to 0 (OFF).
PC
1
1(ON)
PT
Bit allocated for notification
(touch switch 1)
Touch switch 1
Screen Switching Function
When a touch switch is pressed, the display switches to the set screen.
Screen number 5 is set for touch switch 1.
To next screen When touch switch 1
is pressed
Screen number 5
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