Omron NT20S Operation Manual page 180

Overview of Direct Connection Operations
Procedure 1. Use the support tool to allocate the PT status notify area (PT to PC) to the PC
Reference: The contents of the "currently displayed screen word" are updated also by switch-
S Available allocation words
The PT status notify area (PT to PC) can be allocated to the following PC areas.
Symbol C Series PCs
DM Data Memory
CH Internal/Special Relay
TIM Timer
CNT Counter
HR Holding Relay
AR Auxiliary Relay
LR Link Relay
Since the special auxiliary relays of the CV series PCs are allocated to the system,
they cannot be used for purposes other than the system use.
The range of respective area varies with the type of PC. Refer to Appendix L PC
Memory Map (page 278).
memory.
2. Create a PC program to read the "currently displayed screen word" in the in the
PT status notify area when the "screen switch strobe flag" in the PT status
notify area has turned ON.
ing the screen by pressing a touch switch on the NT20S.
For this function (standalone function or screen switch function), refer to the "Stan-
dalone Function" (page 138).
S Continuous screens and overlapping screens
When a continuous or overlapping screen is displayed, the number of the parent
screen is written to the "currently displayed screen word".
For the continuous and overlapping screens, refer to the "Classification of
Screens" (page 122).
Allocated CVM1/CV Series PCs
f
Data Memory
f
Internal/Special Relay
Timer
Counter
f
–
f
Auxiliary Relay
f
–
Section 5-1
Allocated
f
f
f: OK
: NG
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