Omron NT-series Programmable Terminal V022-E3-1 - Manual (Page 219)

Note



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Section 6-1
7-1-3 Notification and Control of Touch Switches
If a touch switch is pressed, the corresponding touch switch number or bit informa-
tion is sent to the Host. Conversely, to turn ON a touch switch or cause it to flash,
the touch switch number or bit information is sent from the Host.
The type of data relating to the touch switch notification is specified with the “bit
input attribute” in the screen attributes when creating the screen data with the sup-
port tool. It is not permissible to use both notification and control by a touch switch
number and notification and control by bit information on the same screen.
Press
Lit
Touch switch number or
bit information
Lighting command
START
abcde
NT600S HOST

Bit touch switch method (bit input permitted setting)
If a touch switch is pressed, bit information is sent in accordance with the posi-
tion of the touch switch. When this method is used, if more than one touch switch
is pressed at the same time, the information of all the pressed touch switches (0
to 63) is reported to the Host.

Touch switch number method (bit input not-permitted setting)
If the touch switch status is changed, the touch switch number set when the
touch switch is created is sent as a 3-digit hexadecimal number.
If the touch switches are set in the following positions using the support tool while
the setting is “bit input permitted”, the following operations will occur due to the
configuration of the touch switches.
Take this into consideration when setting touch switch areas.
Example 1:
Touch switches are set at positions A, B, C, and D using the minimum switch set-
ting unit.

If switches A, B, and C are turned ON at the
same time, switch D is also set ON.
 Similarly, if switches A, B, and D are turned ON
at the same time, switch C is also set ON.
Example 2:
Touch switch areas E, F, and G are set.
 If switches E and F are turned ON at the same
time, switch G is also set ON.
A C
D B
E F
G