Omron NT631 Series Reference Manual page 130

Touch Switches
Symbol
None IR Area
H HR Area
A AR Area
L LR Area
TC Area,
T
Timer PVs
TU ---
TC Area,
C
Counter PVs
CU ---
W ---
TK ---
D DM Area
EM Area
E
current bank
E0_ to
---
EC_
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• In the case of (2) in the table, since notification is executed on the basis of the
contents of the word before the display, the other bits in the word are not over-
written. However, if the contents of the word are changed at the host during
display, they will be rewritten based on the contents before display.
• If the screen is switched while a momentary touch switch is pressed, the touch
switch itself will disappear and the OFF status will be notified to the host.
Therefore, in the case of (1) in the table, all the bits in the word will be set to the
OFF status.
• When using the host link, since writing in bit units is not possible, the statuses
of bits other than the notify bit in the word allocated to a momentary/set/reset
touch switch are not retained when the screen is switched.
• If the status of a bit allocated to an alternate touch switch is changed other than
by touch switch operation — for example by Programming Console operation
— the correct operation of the alternate touch switch cannot be guaranteed
from that point onward (the ON and OFF states may be transposed).
• In the case of (3) and (4) in the table above, notification has no effect on the
other bits in the word.
Reference: In the case of (1) in the table above, even a bit whose status is retained by the
KEEP instruction for ladder program self latch operation will be turned OFF. In
order to avoid this, allocate bits other than in the DM Area when using the NT link
also.
Allocation of The Notify Bit
The notification bit can be allocated to the following host (PC) areas.
C-series PCs Allocation
f
f
f
f
---
---
---
---
f
*2
,
f
---
*1: Words LR 00000 to LR 00199 are converted to CIO 01000 to CIO 01199.
*2: The EM Area is valid for the C200HX/HG/HE(-Z)E PCs only.
CV-series PCs Allocation
f
CIO Area
--- ---
Auxiliary Area
--- ---
Timer Area,
Timer PVs
--- ---
Counter Area,
Counter PVs
--- ---
--- ---
--- ---
f
DM Area
EM Area,
n
current bank
--- ---
Section
CS1-series PCs
CIO Area
HR Area
AR Area
*1
LR Area
TC Area,
Timer PVs
TC Area,
Timer Completion Flags
TC Area,
Counter PVs
TC Area,
Counter Completion Flags
WR Area
Task Flags
DM Area
*3
EM Area
(Current Bank)
EM Area,
EM banks 0 to C
f: OK : NG n: Host link not available
2-7
Allocation
f
n
f
n
n
n
n
n
f
n
n
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