F0001234
H
2
words
F0001234
* The figures in parentheses are the values immediately after input. When data is
read from the host after input, it is converted to a 32-bit negative number and the
value in the numeral memory table entry changes.
Reference: When the Storage Type is BCD, the numeral memory table entry’s signed binary
data is converted to data for storage in the host word (BCD data) and written to
the host. If the value is negative the most significant digit in the word is set as F.
This means that the maximum number of digits for a negative number (integer
part + decimal fraction part) is seven.
When the Storage Type is Binary, the contents of the numeral memory table
entry are written without alteration to the host word.
However, when a negative number is written to a numeral memory table entry
whose number of allocated words at the host is one, it is stored immediately after
input as a 16-bit negative number.
The data is stored in the numeral memory table entry as a 32-bit negative num-
ber in this case as well.
Upper/Lower (Max./Min.) Limit Check
The PT has a function to check the correctness of an input numeric value to pre-
vent a numeric value outside the allowable range from being input so that the
input of an illegal value will not adversely affect the system.
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