Memory Tables; Numeral Memory Tables - Omron NT631 Operation Manuals

Memory Tables

7-3 Memory Tables
7-3-1

Numeral Memory Tables

[Function Outline]
[Restrictions]
278
The NT631/NT631C has the following three types of memory area that can be writ-
ten to freely from the host.
- "Numeral memory tables" for numeric value data
- "Character string memory tables" for text data
- "Bit memory tables" for bit data
The contents of numeral/character string memory tables can be displayed for indi-
vidual memory tables at the Support Tool, and set in table editing.
"Numeral memory tables" are internal memories of the NT631/NT631C for record-
ing numeric value data.
Since they can be allocated to words at the host, the contents of host words can be
displayed as numeric values at the NT631/NT631C via numeral memory tables.
Numeral memory tables are assigned numeral memory table numbers so that
they can be managed and designated individually.
NT631/NT631C
1 2 3 4
9 9 9 9
S The number of numeral memory tables can be set as one of the following in the
"System" settings in the PT configuration settings made at the Support Tool.
- 512 (numeral memory table numbers 0 to 511)
- 1000 (numeral memory table numbers 0 to 999)
- 2000 (numeral memory table numbers 0 to 1999)
Since the numeral memory tables share memory area with the screen data, set-
ting a large number of numeral memory tables reduces the memory area avail-
able for screen data.
S The data quantity of one numeral memory table can be set to either of the follow-
ing by setting at the Support Tool.
1 word (2 bytes)/2 words (4 bytes)
S Since numeral memory table numbers 1000 and higher are not backed up by the
battery, they return to the initial values set with the Support Tool when the power
to the NT631/NT631C is turned ON, when the NT631/NT631C is reset, and on
transition from the System Menu to the RUN mode, regardless of the setting
made for the resume function.
S Numeral memory table numbers 247 to 255 are used with the clock function of
the NT631/NT631C. These tables cannot be used for other applications. For
details on the clock function, refer to 7-15-6 "Clock Function" (page 445).
Display
Numeral memory table No. 1
Display
Numeral memory table No. 5
Section 7-3
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PC
Allocated word