Memory Tables; Numeral Memory Tables - Omron NT631 Series Reference Manual

Memory Tables

2-3

Memory Tables

2-3-1 Numeral Memory Tables

Function Outline
Restrictions
Common Attributes
64
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The PT has the following three types of memory area that can be written to freely
from the host.
• Numeral memory tables for numeric value data Page 64
• 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
individual memory tables at the Support Tool, and set in table editing.
Reference: In addition to the memory tables listed above, there is a mathematical table in
which a calculation formulas can be registered. For details, refer to 2-18 Mathe -
matical Function (page 269).
Numeral memory tables are internal memories of the PT for recording 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 PT via numeral memory tables.
Numeral memory tables are assigned numeral memory table numbers so that
they can be managed and designated individually.
1 2 3 4
9 9 9 9
• 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 fol-
lowing by setting at the Support Tool.
1 word (2 bytes)/2 words (4 bytes)
• 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 PT is turned ON, when the PT is reset, and on transition from the
System Menu to the RUN mode, regardless of the setting made for the resume
function.
• Numeral memory table numbers 247 to 255 are used with the clock function of
the PT. These tables cannot be used for other applications. For details on the
clock function, refer to 2-16-6 Clock Function (page 242).
Numeral memory tables have the following properties.
PT
Display
Numeral memory table No. 1
Display
Numeral memory table No. 5
Section 2-3
Page 71
Page 75
PC
Allocated word