Omron NT-series Programmable Terminal V022-E3-1 - Manual (Page 154)


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Section 4-7

Functions of touch switches
Touch switches can have the following functions:
- PC notification function
Direct connection (page 181)
RS-232C communication (page 205)
- Screen switch (standalone) function (page 141)
- System key function (page 142)
- Numeral setting function (page 146)
Direct connection (page 189)
RS-232C communication (page 205)
Touch Switch Attributes The following attributes can be set for touch switches.

Display frame
The area that will respond as a touch switch is displayed in the form of a frame,
as shown in the table below. One of three types of frame - standard, 3-D, and
none - can be selected.
Type of Display
Frame
Switch OFF Switch ON
Standard
3-D
None
If “none” is selected, only the touch switch’s guide display message (or nothing, if
there is none) are displayed until a “light” or “flash” designation is sent from the
PC/Host or the touch switch is pressed.

Inverse display on input
It is possible to set a touch switch so that its display will be inverted when it is
pressed.
 Lighting and flashing
When using host link/NT link/C200H direct communication, it is possible to spec-
ify whether a touch switch will be lit continuously or flash when the bit allocated to
it is turned ON by an instruction from the PC.
When using RS-232C, it is possible to specify whether a touch switch will be lit
continuously or flash in response to an instruction from the Host.
 Presence/absence of a guide display
A guide display message can be displayed at a touch switch location.