![background image](http://html.mh-extra.com/html/omron/nt20/nt20_user-manual_744538218.webp)
197
Lamps, Touch Switches, Numeral Setting
Section 5-3
The range of each memory area differs according to the PLC type.
Note
(1) LR 00000 to LR 00199 are converted to CIO 01000 to CIO 01199.
(2) The EM Area is supported only by the C200HX/HG/HE-(Z)E PLCs.
When making a data memory (DM) specification, specify the bit number (00 to
15) following the word number.
1,2,3...
1.
Use the Support Tool to allocate the touch switch notify bits to the PLC
memory.
2.
When creating the screen data using the Support Tool, register the touch
switch for a screen.
3.
Create a PLC program to determine whether the touch switch notify bit is
ON or OFF.
The touch switch notification operations are as follows:
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.
• 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 re-
written. However, if the word contents are changed at the PLC, 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 indicated. 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 notification operations are different.
In the case of (3) and (4), the notification operation has no influence on the
other bits in the word.
Type of
Notification
Operation
When Using Host Link or
NT Link with DM Area
When Using C200H Direct
Communications 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 con-
tents are read on display
and notification is based
on this reading)
(4) Notification in bit units
0
1
0
1
0
0
0
1
15 14
0
1
15 14
0
1
Bit
Bit
Bits other than notify
bits are set to 0 (OFF).
Press the
touch switch
Touch switch
notify bit
Summary of Contents for NT20
Page 1: ...Programmable Terminal Cat No V091 E1 01 NT20 USER S MANUAL ...
Page 2: ...NT series Programmable Terminal User s Manual Produced March 2007 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 9: ...x TABLE OF CONTENTS ...
Page 15: ...xvi ...
Page 21: ...xxii EC Directives 6 ...
Page 37: ...16 Before Operating Section 1 6 ...
Page 153: ...132 Transferring the Resource Data Section 3 11 ...
Page 185: ...164 Numeral Setting Section 4 8 ...
Page 267: ...246 Key to Programs Section 6 8 ...
Page 281: ...260 Specifications Appendix A ...
Page 285: ...264 Transporting and Storing PTs Appendix C ...
Page 303: ...282 Function Restrictions Depending on the Support Tool Appendix I ...
Page 307: ...286 Index ...
Page 309: ...288 Revision History ...