Omron NT-series Programmable Terminal V022-E3-1 - Manual (Page 183)

Reference

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Section 5-2

Displaying the numeral memory table
Numerals can be displayed in three different ways according to the contents of
the numeral memory table, as mentioned below.
The most significant digit (digit 4 of a single word or digit 8 of a double word) is
processed in different ways.
Hexadecimal display: All digits are handled as stored in the allocated
words.
Decimal display without signs: If the most significant digit is “F”, it is handled
as “0”, and the most significant digit other than
“F” and other digits are handled as stored in the
allocated words.
Decimal display with signs: If the most significant digit is “F”, it is handled
as “--” (minus sign), and the most significant
digit other than “F” and other digits are handled
as stored in the allocated words.
[Numeral memory table display examples]
 When the data are numeral data (0 to 9)
Start
Start + 1
Decimal without sign 123456
Decimal with sign --123456
Hexadecimal F0123456
3 4 5 6
F 0 1 2

When the data contain characters (A to F)
Start
Start + 1
Decimal without sign 123B56
Decimal with sign --123B56
Hexadecimal F0123B56
3 B 5 6
F 0 1 2
If the hexadecimal data (A to F) are stored when the decimal display has been set,
the alphabets are displayed.
 If the number of display digits has been set to be smaller than the maximum
number of digits of the registration words (4 digits for 1 word; 8 digits for 2
words), the contents of the allocated words are not displayed and “

” symbols
will be displayed at all digits.
 If the most significant digit is “F” when “decimal with signs” has been set, the
numeral is handled as a negative number. The maximum number of digits of the
negative number becomes smaller than that of the positive number by 1 digit.

The actual display will vary according to the “zero suppress” setting and decimal
fraction setting as well as the contents mentioned above. Refer to the “NT-se-
ries Support Tool Operation Manual” (V028-E1-01).