2-12SectionInputting Numeric Values
208
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 from a thumbwheel switch 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 thumbwheel switch is enabled or dis-
abled.
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 changed by pressing the increment and
decrement touch switches only while the interlock bit is ON.
If you attempt to change a value while the interlock bit is OFF, the
buzzer will sound and the value will not change.
Not used Values can be changed with the increment and decrement touch
switches at any time.
The PT continuously reads the status of the corresponding interlock bit while a
thumbwheel switch’s numeral input field that uses the interlock function is being
displayed on the screen. if the interlock bit’s status changes, the thumbwheel
switch 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 even though you attempt to change an
interlocked thumbwheel switch’s value.
Interlock Bit Allocation
Interlock bits can be allocated in the following host (PC) areas.
Symbol C-series PCs Allocation CV-series PCs Allocation CS/CJ-series PCs Allocation
None IR Area OK CIO Area OK CIO Area OK
H HR Area OK --- --- HR Area
Not with
Host Link
A AR Area OK Auxiliary Area No AR Area OK
L LR Area OK --- --- LR Area
*1
Not with
Host Link
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