Omron NT11 - 01-2004 User Manual page 105

Areas for Control/Notification
Symbol C-series PLCs
E *2
EM Area ,
current bank
E0_ to ---
EC_
Notifying the Display Elements by Using Allocated Bits and Words
Notifying the NT11 Status by Using Allocated Bits and Words ..... PT Status Notify Area (PT to PLC)
92
Allocation CV-series PLCs
OK EM Area,
current bank
--- ---
*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.
The Auxiliary Area of the CVM1 and CV-series PLCs is allocated to system
functions, and cannot be used for purposes other than system use.
The range of each memory area differs according to the PLC.
The NT11 will operate as follows in the display element notification operation.
[NT11 operation]
The NT11 will write any changes in the contents of the numeral or character-
string memory table entry being displayed or pressing of a system keys to the
bits and words area in the PLC.
[NT11 operation example]
Numeral memory table entry 100 Numeral memory table entry 0
0 4 3 2
Copy
The PT status notify area (PT to PLC) is provided to notify the NT11 status
changes to the PLC. When any NT11 status has changed, such change is
written to this area in the PLC, and the PLC will read the data from this area to
check the NT11 status.
The PT status notify area is configured as three consecutive words as shown
below.
Word 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit
m
0
m+1
PT status
m+2
The first word (word m) of the PT status notify area must be set with the sup-
port tool.
• Currently displayed screen (refer to page 112)
The screen number displayed on the NT11 is written to this word.
Simultaneously, the PT status screen switch strobe flag is set to ON (1).
After this is notified to the PLC, this flag reverts to OFF (0). Checking the
status of this flag will provide a simple method of checking if the NT11 dis-
play has switched.
Allocation CS/CJ-series PLCs
Not for Host EM Area,
Link current bank
--- EM Area,
EM banks 0 to C
NT11 PLC
DM0110:0432
Number of saved words: 1
First word: DM0110
Screen No. (4-digit BCD)
Numeral memory table entry No. (3-digit BCD)
0
Section 4-3
Allocation
Not for Host
Link
Not for Host
Link
Screen being displayed
Content upgrade
memory table entry
0
PT status