Panasonic FP Series User Manual

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

Panasonic FP Series Specifications

General

Mounting	DIN rail
Type	PLC
Communication Interface	RS-232, RS-485, Ethernet (depending on model)
Input Voltage	100-240V AC or 24V DC (depending on model)
Output Type	Relay, Transistor
I/O Points	Varies by model
Operating Temperature	0°C to 55°C
Dimensions	Varies by model
Weight	Varies by model