Omron NT631 Series Reference Manual page 128

Touch Switches
Processing Functions
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Screen Print Key Function
A hard copy of the currently displayed screen can be printed out at a printer con-
nected to the PT.
For details, see Processing Functions below.
It is possible to sound the key press sound when a touch switch is pressed.
Whether or not the key press sound is sounded can be set at key press sound
with memory switch. (Refer to the Setup Manual for details.)
When a touch switch is pressed, the function set for it is executed.
There are nine functions that can be set for touch switches, as follows.
• Host notification function
• Screen switching function
• Control key function
• Character string input key function
• Window key function
• Copy key function
• Cursor moving key function
• Window move function
• Screen print key function
Host Notification Function
This function notifies the host that a touch switch has been pressed.
When this function is used, a bit for notification (the notify bit) must be set for the
touch switch. The input statuses of the touch switches displayed at the PT are
always reflected by the notify bits. If the notify bit is not set, the touch switch will
not function (it will function as a lamp only).
The properties for input notification are as follows.
Settings
Address
PC Bit Allocated bit for touch switch notification
Address (Allocation of the notify bit, page 121).
I/O Comment that indicates the contents of the allocated bit
Comments
Character string of up to 16 alphanumerics and symbols
Action Type Notification operation when the touch switch is pressed
Momentary, Alternative, Set, Reset
Types of Notification Operation
The following four methods for notification to the host can be selected.
Momentary
While a touch switch is pressed the notify bit is ON; it goes OFF when the switch
is released.
1 (ON)
Notify bit
0 (OFF)
Alternate
Each time the touch switch is pressed, it goes OFF if it is ON, or ON if it is OFF.
The status of the notify bit does not change when the touch switch is released.
1 (ON)
Notify bit
0 (OFF)
Pressed Released Pressed
↓ ↓ ↓
Pressed Released Pressed
↓ ↓ ↓
Section 2-7
Released
↓
Released
↓
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