Omron NT20S, Operation Manual

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Memory Tables and Bar Graphs Section 5-2
5-2-5 Upgrading Bar Graphs
(Changing the Contents of Allocated Words)
The following describes the procedure to upgrade the bar graph display on the
NT20S by changing the contents of the allocated words.
To change the bar graph display on the NT20S, change the contents of the PC
words to which the numeral memory tables have been allocated.
The bar graph display cannot use hexadecimal numbers. If hexadecimal numbers
are set, the bar graph will not be displayed.
By writing a negative number (whose most significant digit is “F”) to the allocated
word of a graph set as “Sign display “No””, the graph display will become 0 % and
the % display will show “
%”.
For the procedure to write numeral values to the allocated words of the numeral
memory tables, refer to “Displaying the Contents of Allocated Words of Memory
Tables” (page 167).
For the procedure to change the contents of the numeral memory table (PC
words), refer to “Changing Displayed Numerals or Character Strings (Changing
the Contents of Allocated Words)” (page 169).
S
Available allocation words
The numeral memory tables can be allocated to the following PC areas:
Symbol C Series PCs Allocated CVM1/CV Series PCs Allocated
DM Data Memory
f
Data Memory
f
CH Internal/Special Relay
f
Internal/Special Relay
f
TIM Timer Timer
CNT Counter Counter
HR Holding Relay
f
–
AR Auxiliary Relay
f
Auxiliary Relay
LR Link Relay
f
–
f
: OK : 1 word only : NG
Since the special auxiliary relays of the CVM1/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).