Omron NT30 Operation Manual page 209

Outline of Host Link and NT Link Operations
Sym-
bol
DM DM Area
CH IR Area
TIM Timer Area
CNT Counter Area
HR HR Area
AR AR Area
LR LR Area
Procedure 1. Use the NT-series Support Tool to allocate the PT Status Notify Area (PT to
200
By reading the currently displayed screen word when the screen switch strobe
flag has turned ON, the number of the currently displayed screen on the
NT30/30C is displayed.
NT30/30C
Currently
displayed
screen
Currently Displayed Screen and PT Status in the PT Status Notify Area
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit
Word
Screen number (4-digit BCD)*
m
PT status notify bit
m+2
15 14 13 12 11 10
– 0
* Screen number: 0001 to 2000
Use a 4-digit BCD (binary-coded decimal) value to set a screen number.
The screen switch strobe bit reverts to OFF (0) after this is notified to the PC.
S Allocated Words
The PT Status Notify Area (PT to PC) can be allocated words in the following
PC areas.
Alloca-
C Series PC
tion
f
f
f
f
f
The Auxiliary Area of CV series PC is used exclusively for special applications in
the system, and cannot be used for other application.
The range of respective area varies with the type of PC. Refer Appendix J PC
Memory Map (page 291).
PC) to the PC memory.
2. Program the PC 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.
PC
PT Status Notify Area
Currently displayed screen
Content upgrade memory table entry
PT status
0 0 0 0
9 8
– – – 0 0
Alloca-
CVM1/CV Series PC
tion
DM Area
CIO Area
Timer
Counter Area
–
Auxiliary Area
–
Section
Screen number
Screen switch
strobe flag
Screen switch setting
PT status
7 Bit
–
Screen switch strobe
f
CS1 Series PC
f
DM Area
f
CIO Area
Timer
Counter Area
– HR Area
Auxiliary Area
– –
5-1
: Possible
: Impossible
Alloca-
tion
f
f
–