2-12SectionInputting Numeric Values
198
For a numeric key type numeral setting input field, the check is executed when
an attempt is made to confirm a numeric value. If the value is higher than the
upper limit or lower than the lower limit, the buzzer sounds three times and the
input value is cleared (the status returns to that before input was attempted).
Note To ensure greater safety for numeric inputs, use the upper/lower limit setting
function. Otherwise the system may operate unpredictably.
Reference:  Since values input at the PT are handled as signed binary data, be sure to ob-
serve the following upper/lower limit settings at the Support Tool when num-
bers are being input in hexadecimal with its unlimited input range.
• The following values are recognized internally in the PT.
1 word: 8000
H
↔ 0000
H
↔ 7FFF
H
(–32,768 ↔ 0 ↔ 32,767 decimal)
2 words: 8000 0000
H
↔ 0000 0000
H
↔ 7FFF FFFF
H
(–2,147,483,648 ↔ 0 ↔ 2,147,483,647 decimal)
• In the Support Tool, the upper/lower limits are set in decimal. (The $ prefix
can be added to input hexadecimal values.
Using the figures above, the following table shows the upper/lower limits to
be set at the Support Tool.
Desired input
range
Lower limit to set Upper limit to set
0 to FFFF
H
–32,768 ($8000) 32,767 ($7FFF)
0 to FFFFFFFF
H
–2,147,483,648
($8000 0000)
2,147,483,647
($7FFF FFFF)
 When inputting a number with a decimal fraction for the upper limit or lower
limit, such as 0.1234, 1.234, or 123.4, input only the 4-digit integer value.
Interlock Function
A numeral input can be controlled (enabled/disabled) from the PC by setting the
interlock function for the numeral input and allocating an interlock bit in a PC data
area. The status of the allocated interlock bit is read and its status determines
whether the input is enabled or disabled.
The following table shows how the PT operates when the interlock function is
used or not used.
Interlock
function
Operation
Used Numerical values can be input only while the interlock bit is ON.
If you attempt to input a value while the interlock bit is OFF, the buzzer
will sound and the input field will not change. When an input is made
from a temporary input field to the interlocked numeral input while the
interlock bit is OFF, the buzzer will sound when the value in the
temporary input field is confirmed and the destination numeral input
field will not change.
Not used Values can be input and confirmed at any time.
The PT continuously reads the status of the corresponding interlock bit while a
numeral input field that uses the interlock function is being displayed on the
screen. if the interlock bit’s status changes, the numeral input field is disabled or
enabled according to the interlock bit’s status.
Reference: If the touch switch input sound has been turned OFF with the PT’s memory
switch setting, the buzzer won’t sound when you attempt to input a value in an
interlocked input field.
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