Omron NT21 Series, Reference Manual

Page: 80 / 466

2-3 Section Memory Tables
71
•
When an analogue meter is used, the contents of a numeral memory table can
be displayed in real time in the form of quarter, semi-circle or circle-shaped
graph.
•
When a broken line graph is used, the contents of multiple, consecutive nu-
meral memory tables can be displayed in real time in the form of a broken line
graph (page 154).
•
When a trend graph is used, changes over time in the contents of a numeral
memory table can be displayed in the form of a broken line graph (page 162).
•
When a lamp’s guide character is made into a numeral display, the contents of
a numeral memory table can be displayed numerically in real-time (page 103).
•
When a touch switch’s guide character is made into a numeral display, the con-
tents of a numeral memory table can be displayed numerically in real-time
(page 110).
•
When a numeral setting is used, numeric values can be input into the numeral
memory table from the screen of the PT (page 183).
•
When a thumbwheel switch is used, numerical values can be input into the nu-
meral memory table from the screen of the PT (page 191).
•
When the touch switch copy setting function is used, the contents of a numeral
memory table can be copied, and constants can be input to the numeral
memory table (page 126).
•
By operation of the PT status control area. data can be copied between
memory tables from the host (page 46).
•
If the contents of numeral memory tables are changed by operation at the PT,
the change is notified to the PT status notify area (page 55).
•
A numeral memory table can be specified as the location of operands used by
the mathematical function or the destination of calculation results (page 269).
2-3-2 Character String Memory Tables
Character string memory tables are internal memories of the PT for recording
character string data.
Since they can be allocated to words at the host, the contents of words at the
host can be displayed as character strings at the PT via character string memory
tables.
Character string memory tables are assigned character string memory table
numbers so that they can be managed and designated individually.
a b c d e
ABCDE
Display
Display
Allocated word
PC
PT
Character string memory table No. 8
Character string memory table No. 12
Read
Restrictions
•
The number of character string memory tables can be set as one of the follow-
ing at the Support Tool.
•
256 (character string memory table numbers 0 to 255)
•
1000 (character string memory table numbers 0 to 999)
•
2000 (character string memory table numbers 0 to 1999)
Since the character string memory tables share memory area with the
screen data, setting a large number of character string memory tables re-
duces the memory area available for screen data.
•
The data quantity of one character string memory table can be set as follows by
setting at the Support Tool (a setting of 0 indicates no allocation).
Function Outline
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