Omron NT631 Series Reference Manual page 330

Input of Numeric Values and Character Strings
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the input. When the input is confirmed, the input numeric value is written to the
numeral memory table and the occurrence of a change in the contents of the
numeral memory table is notified to the PT status notify area (page 55).
The ENT key and the key differ from each other in the following respects.
• ENT key
When more than one numeric key type numeral setting input field exits on the
screen, the input objective shifts to the next input field when the input is con-
firmed. The input objective shifts in the order specified by the Support Tool.
•
key
Even when more than one numeric key type numeral setting input field exits on
the screen, the input objective does not shift after the confirmation of the input.
Upper and Lower Limit Checks
The PT checks whether inputs are within the specified range to prevent the sys-
tem from being adversely affected by the input of incorrect values. When a nu-
meric value has been input in a numeral input field, the PC checks it against the
upper and lower limit values when the value is confirmed.
Initial Operation of Input Keys
How the sign () key, the decimal point (.) key, and alphabetic letter (A to F) keys
operate in the initial input (the first input after the screen is displayed or after the
confirmation of the previous input) is described below.
• Sign () key:
The display is cleared to 0.
• Decimal point (.) key:
The display is cleared to 0 and the input starts in the decimal fraction part. If the
number of digits of the decimal fraction part is 0, numeric input is not the input
for the decimal fraction part.
• Alphabetic letter (A to F) key:
In decimal input: The input is disregarded, and the buzzer sounds
three times.
In hexadecimal input: The input alphabetic letter is displayed.
Input Example
In actual numeric input, the input numeric value changes as shown below.
Input example 1)
Decimal display, signed, 4 digits in integer part, 3 digits in decimal fraction part
Displayed
Order Key numeric
value
Initial value
0000.000
1 0001.000
1
2 0015.000
5
3 0152.000
2
4 0152.000
B
±
5 –0152.000
6 –1524.000
4
Input example 2)
Decimal display, unsigned, 4 digits in integer part, 3 digits in decimal fraction part
Displayed
Order Key numeric Order
value
7 A –1524.000
8 –1524.000
.
9 –1524.100
1
10 –1524.150
5
11 –1524.152
2
12 –1524.527
7
13 –1524.527
Section 3-7
Displayed
Key numeric
value
14 0000.000
.
15 0000.700
7
16 0000.720
2
17 0000.720
±
18 0000.000
19 0001.000
1
±
20 –0001.000
321