Omron NT-series Programmable Terminal V022-E3-1 - Manual (Page 201)


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Section 5-3

Important Points
Type of Notification
Operation
When Using Host Link or
NT Link with DM Area
When Using C200H Direct
Communication or NT Link with
other than DM Area
Momentary
(1)Notification in word units
(other bits go OFF)
(3)Notification in bit units
Alternate
Set
Reset
(2)Notification in word units
(however, the word contents
are read on display and noti-
fication is based on this
reading)
(4)Notification in bit units
When using touch switch input notification, note the following points:
- In the case of (1), the other bits in the same word as the notification bit are turned
OFF by the notification operation.
Bits other than notify
bits are set to 0 (OFF).
0 1 0 1 0 0 0 1
15 14 0 1 15 14 0 1 Bit Bit
Press the
touch switch
Touch switch
notify bit
- In the case of (2), notification is executed on the basis of the contents of the word
before display, which means that the other bits are not rewritten. However, if the
word contents are changed at the PC side, they will be rewritten based on the
contents before display.
- If the screen is switched while a momentary key is being pressed, the touch
switch itself disappears, so the status “OFF” is notified. In the case of (1) this
means that the other bits in the word will also be turned OFF.
- When using the host link, or NT link with the DM area, do not allocate momentary
touch switches and other types of touch switch to the same word, since the notifi-
cation operations are different.
In the case of (3) and (4), the notification operation has no influence on the other
bits in the word.
Application This example uses the touch switches as normal switches (bits) in order to use the
NT600S as an operating panel.

Support Tool Settings
Make the following settings using the support tool.
Touch switch #10:
Function “Notify Bit”
Display attribute “Light”
Control bit CH05000 (Run flag) ... Guide message: “RUN”
Notify bit CH 06000