Panasonic FP Series Programming Manual page 436

F288_DBAND
The function compares the input value at input s3 with a deadband whose lower limit is specified at
Description
input s1 and whose upper limit is specified at s2. The result of the function is returned at output d
as follows:
 If the input value at input s3 < s1, the lower limit at input s1 is subtracted from
the input value at s3, and the result is stored as the output value at d.
 If the input value at input s3 > s2, the upper limit at input s2 is subtracted from
the input value at s3, and the result is stored as the output value at d.
If the input value at s2  s3  s1, 0 is returned as the output value at d.

Lower limit of
deadband s1
In this range, zero is output
This instruction also exists as a P instruction (for FP2/2SH, FP3/5, FP10/10SH PLC types), which
is only executed at the rising edge of the EN trigger. Select [Insert P instruction] from the
"Instructions" pane if you require a P instruction. To facilitate reuse, the instruction then appears
under "Recently used" in the pop-up menu. Press <Ctrl>+<Shift>+<v> within the programming
area to open the list of recently used elements.
Availability of F288_DBAND (see page 1323)
PLC types
Data types
Variable Data type
s1
s2
ANY32
s3
d
Operands
For
s1, s2, s3
d
32-bit data deadband control
Output value d
Input value s3
0
Upper limit of deadband s2
Function
the area where the lower limit is stored or the lower limit data
the area where the upper limit is stored or the upper limit
data
the area where the input value is stored or the input value
data
the area where the output value data is stored
Relay
DWX DWY DWR DWL DSV
- DWY DWR DWL DSV
T/C Register
DEV DDT DLD DFL
DEV DDT DLD DFL
Arithmetic instructions
Constant
dec. or hex.
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