Omron NT31C Reference Manual page 198

Inputting Numeric Values
The permissible input range is determined as follows depending on these prop-
erties. If input of a value outside this range is attempted, the PT checks and pre-
vents the input.
Storage Display
Words
Type Type
Decimal Decimal
1 1
Hexadecimal
BCD
Decimal Decimal
2 2
Hexadecimal
Decimal Decimal
1
Hexadecimal
Binary Binary
Decimal Decimal
2
Hexadecimal
* Note that the values are different from those of the numeral display range. In
numeral display, since negative numbers are displayed as absolute values when
displaying unsigned decimal values, 32768 and 2147483648, which cannot be
input, may be displayed.
Relationship Between Input Numeric Values and Contents of Host Words
When inputting a numeric value to a numeral memory table allocated to a word
at the host, the value is first converted to signed binary in accordance with the
settings for Display Type and Display Sign settings and stored in the numeral
memory table, and then written to the host word in accordance with the Words
and Storage Type settings for the numeral memory table. Therefore the result
also differs according to the settings made for Words and Storage Type (BCD or
Binary).
Set the data format in which
the values input at the PT will
be stored in the numeral
memory tables.
(Set in the Numeral Input
properties.)
Sign Permissible Input Range
Unsigned
Signed
FC19 to FFFF
–
0 to 270F
Unsigned
Signed –9999999 to 99999999
FF676981 to FFFFFFFF
– (negative numbers)
0 to 5F5E0FF
Unsigned
Signed –32768 to 32767
–
Unsigned 0 to 2147483647
Signed –2147483648 to 2147483647
– 0 to FFFFFFFF
Numeral memory table
8-digit hexadecimal
(Can't be read externally.)
BCD
Decimal
Binary
BCD
Hexadecimal Binary
Set the data format in which the
numeral memory table values
will be stored in the PC.
(Set with the numeral memory
table.)
Section 2-12
0 to 9999
–999 to 9999
(negative numbers)
H
(positive numbers)
H
0 to 99999999
H
(positive numbers)
H
*
0 to 32767
0 to FFFF
H
*
H
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