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139

Numeral Setting

Section 4-8

4-7-3 System Key Functions

The NT20S allows the allocation of “system key” functions to touch switches. The

system key functions can then be used during operation by pressing the touch

switches to which they have been allocated.

For example, if, when a screen for which buzzer sounding has been set is dis-

played, a touch switch is also displayed, the buzzer can be stopped by press-

ing this touch switch.

To set a system key function for a touch switch, use “Touch SW”, “Bit specification”

and “Numeric key” of the support tool.

Allocation of System Key Functions

The system key functions are allocated to touch switch numbers 227 to 230 and

255, as shown below. When a touch switch with one of these numbers is displayed

on the screen, it has the same function as the corresponding system key.

System Key Key Symbol Touch Switch No.

System menu display

227

228

229

[Buzzer stop] 230

[ENT] 255

' When a touch switch to which a system key function has been allocated is

pressed, the touch switch bit information is not notified to the PC.

The , , and keys are not displayed among the system numeric keys. Ac-

cordingly, when using the system numeric keys, create the , , and keys.

Alternatively, create user numeric keys.

Omron NT20S User Manual

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