Numeral Display - Omron NT631 Series Reference Manual

Numeral Display

2-8

Numeral Display

Function Outline
Restrictions
Common Attributes
130
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The contents of numeral memory tables are displayed as numeric values.
The values can be displayed either in decimal or hexadecimal notation.
There are two methods for referencing a numeral memory table whose contents
are to be displayed, as follows.
• Direct reference (reference of the number of the relevant numeral memory
table)
PT
0 0 6 2
Direct
reference
• Indirect reference (reference of the numeral memory table that stores the num-
ber of the relevant numeral memory table)
PT
7 7 7 7
Indirect
reference
• A maximum of 256 numeral displays can be registered for one screen. (Same
for window screen.) For an overlapping screen comprising 8 child screens, the
maximum is 1024.
There is no restriction on the number of numeral displays that can be regis-
tered for one screen data file: any number can be registered as long as the
data file capacity is not exceeded. However, if a large number of elements
are registered, check that the restrictions on element display are complied
with by referring to Display Restrictions (page 425).
• The maximum number of numeral display which can be displayed using indi-
rect reference is 100 per screen combined with the number of character string
display which is displayed using indirect reference. (Same restriction applies
to overlapping screens or when displaying window screens.)
• The range of numeric values that can be displayed depends on the Storage
Type (BCD or Binary), Display Type (Decimal or Hexadecimal), and Display
Sign settings made for the numeral memory table. For details, refer to 2-3 Nu -
meral Memory Tables (page 64).
The relationship between the properties of a numeral display and the displayed
numeric value is indicated below.
PC
Allocated word
Numeral memory
(numeral memory table No. 18)
table No. 18
DM0100
0 0 6 2 0 0 6 2
PC
Allocated word
(numeral memory table No. 18)
Numeral memory
table No. 18
DM0100
0 0 6 2
0 0 6 2
DM0200
7 7 7 7
7 7 7 7
Numeral memory Allocated word
table No. 62 (numeral memory table No. 62)
Section 2-8