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29 Applied Instructions (Data Table Operation)
29.2 BAND / Dead Band Control
684
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
Function and operation explanation
1. 16-bit operation (BAND/BANDP)
Depending on how the input value (16-bit binary value) of the device specified by compares to the upper
and lower limit dead band range between the devices specified by and , the output value to be
stored in the device specified by is controlled.
The output value is controlled as shown below.
2. 32-bit operation (DBAND/DBANDP)
Depending on how the input value (32-bit binary value) specified by compares to the upper and lower
limit dead band range between the devices specified by and , the output value to be stored in the
device specified by is controlled.
The output value is controlled as shown below.
Output
Upper limit value of dead band( )
Input value( )
Output
)
Input
value
Output value
Lower limit value
of dead band
Output
value=0
s2
Output value( )
d
s1
(
s3
BAND
EN ENO
d
s1
s2
s3
Command
input
Lower limit value of dead band
Upper limit value of dead band
Input value controlled by the dead band
Device storing the output value controlled by the dead band.
ds1 s1
1)
In the case of " > " ................................ -
→
lower limit
value
lower limit
value
input
value
output
value
s3
s2 s2 d
2)
In the case of " < " ................................ -
→
upper limit
value
upper limit
value
input
value
output
value
s3 s3
s3
s1
lower limit
value
s2
upper limit
value
3)
In the case of " ≤ ≤ " ......................................................... 0
→
input
value
d
output
value
s3
input
value
input
value
Input value
Output
Upper limit value of dead band
Output
Input
value
Output value
Output
value=0
Output value( )
d
s2
s3
)(
)(
)
Lower limit value
of dead band
s1
(
DBAND
EN ENO
d
s1
s2
s3
Command
input
Lower limit value of the dead band
Upper limit value of the dead band
Input value controlled by the dead band
Device storing the output value controlled by the dead band.
In the case of " > "............................. - →
In the case of " < "............................. - →
In the case of " ≤ ≤ ".....................................................0 →
1)
output value
d
lower limit value
s1
upper limit value
s2
input value
s3
lower limit value
s1
input value
s3
input value
s3
lower limit value
s1
upper limit value
s2
input value
s3
input value
s3
upper limit value
s2
output value
d
output value
d
2)
3)