Omron NT20M - Manual (Page 53)

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2. Specify the number to be used in the table. The numbers in this table
are not the touch switch numbers. A display will appear to draw the
touch switch.
3. Specify the starting and ending points (diagonally opposed corners) of
the rectangle. A display will appear to specify the bit that is to control the
touch switch.
4. Input the address of the PC bit that is to control the touch switch. Timer/
counter numbers cannot be specified. DM word address can also be
specified, followed by the bit number within the word.
5. Input a comment if desired. The comment is for user use only.
6. Specify the function of the touch switch. The display that appears next
will depend on the setting made here. The three possible settings are as
follows:
Notify :
Sends a signal to the PC when the switch is pressed, i.e.,
turns the specified bit ON while the switch is pressed.
SwScreen: Switches to a specified screen when the switch is pressed.
This setting is used for stand-alone operation.
Keypad: Creates a key for numeral editing.
7. Notify: Specify the address of the PC bit to be controlled by the touch
switch. Timer/counter numbers cannot be specified. A DM word address
can be specified followed by the bit number. A user comment can also
be input if desired.
SwScreen: Specify the number of the screen to be switched to when
the touch switch is pressed. The screen number set here will be set in
the PT status notify area in the direct connection information.
Keypad: Specify the touch switch number to be used for numeral edit-
ing.
Caution If a DM area word address and bit number are specified for notification of
touch switch status, the status of the specified bit will vary with the status of
the touch switch, but all other bits in the specified word will be turned OFF.
Timing must be precisely controlled if more than one bit in the same DM word
is used for notification to ensure accuracy in reading the status.
Touch Switches Section 2-5