Panasonic FP Series Programming Manual page 438

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F348_FBAND
The function compares the input value at input s3_In with a deadband whose lower limit is
Description
specified at input s1_Min and whose upper limit is specified at s2_Max. The result of the function
is returned at output d as follows:
Lower limit of
deadband s1
In this range, zero is output
Comparison
between s1 and s2
s1 < s2
s1  s3 and s2  s1
s3 < s1
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 F348_FBAND (see page 1324)
PLC types
Data types
Variable
Data type
REAL
s1_Min
REAL
s2_Max
REAL
s3_In
REAL
d
Operands
For
DWX DWY DWR
s1_Min,
s2_Max,
s3_In
Floating point data deadband control
Output value d
Input value s3
0
Upper limit of deadband s2
Flag
R900A
R900B
(> flag)
(= flag)
off
off
off
on
on
off
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
DWL
DSV
R900C
(< flag)
on
off
off
T/C
Register
DEV
DDT
DLD
DFL
Arithmetic instructions
Constant
dec. or hex.
437

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