Omron NT31 Operation Manuals page 287

Areas for Control/Notification
Allocated Words of the PT Status Notify Area
Symbol C Series PCs
DM Data memory
CH I/O relay
TIM Timer present value
CNT Counter present value
HR Holding relay
AR Auxiliary relay
LR Link relay
EM EM Current Bank
Functions of the PT Status Notify Area
276
The PT status notify area (NT31/NT31C → host) can be allocated to the following
host (PC) areas.
Allocation
3
3
3
3
3
3
*1 *2
*1 : EM (Extended data memory) of C series is available only with C200HX/HG/HE (–Z).
*2 : Only current bank can be allocated for EM (Extended data memory).
Since the special auxiliary relays of the CVM1/CV series PCs are all allocated to
system functions, they cannot be used for purposes other than system use.
The range of each memory area differs according to the PC type. Refer to AP-
PENDIX L "PC Memory Map", page 684.
Note S Set so that there is no overlap between the PT status control area and PT status
notify area.
S When using the NT link (1:N) method, allocate a PT status control area and PT
status notify area — making sure that they do not overlap — for each connected
NT31/NT31C.
S Content update memory table number
When the contents of a numeral/character string memory table have been
changed by operation at the NT31/NT31C, the number of the memory table sub-
ject to the change is written to the "content update memory table number" word
as a 4-digit BCD or hexadecimal value. Whether the value is expressed in BCD
or hexadecimal is determined by the setting for numeral storage type in the PT
configuration settings made with the Support Tool.
12345678
CVM1/CV Series PCs
Data memory
I/O relay
Timer present value
Counter present value
–
Special auxiliary relay
–
*2
EM Current Bank
NT31/NT31C
Numeral memory table 1
12345678
7 8 9
4 5 6
1 2 3
0 .
Allocation CS1 Series PCs
3
Data memory
3
I/O relay
Timer present value
Counter present value
– Holding relay
Special auxiliary relay
– –
n
EM Current Bank
3: OK n: Host link not available
: NG
PC
PT status notify area
Table number Content update memory table
Numeral setting
PT status
strobe flag
Allocated word (numeral memory table 1)
12345678 →
5 6 7 8
1 2 3 4
Section 7-2
Allocation
3
3
–
3
*2
First
First + 1