Mitsubishi MELSEC-Q/L Programming Manual page 558

BAND, BANDP, DBAND, DBANDP
Function
BAND
(1) Controls the output value to be stored at the device designated by
designated by is within the range of dead band upper and lower limit values specified by
S3
Output value is controlled in the way shown below:
• When Lower limit value
S1
• When Upper limit value
S2
• When Lower limit value
S1
(2) The values that can be designated by
(3) The output value stored at
-32768 to 32767, the following will take place:
When :
Output value -32768-10 8000
DBAND
(1) Controls the output value to be stored at the device designated by
designated by ( , +1) is within the range of dead band upper and lower limit values specified by ( ,
S3 S3
+1) or not.
S2
Output value is controlled in the way shown below:
+1
S1 S1
When Lower limit value
S2 +1 S2
When Upper limit value
S1 +1 S1
When Lower limit value
(2) The values designated by ( ,
556
Input value ..........................
S3
.........................
Input value
S3
Input value
S3 S2
Output value (
Dead band
lower limit value ( )
S1
0
, , and
S1 S2 S3
is a signed 16-bit BIN value. Therefore, if the operation results exceed the range of from
D
Dead band lower limit value
Input value
................................................
S3
- A
H H
+1
+1 S3
S3 S3
Input value Input value
+1
S3
S3 +1 S3
Input value Input value
+1
S3 S3 +1
S2 S2
Input value Upper limit value
Output value ( D
Dead band lower
limit value ( , +1)
S1 S1
0
Dead band upper
limit value (
+1), ( , +1), or ( ,
S1 S1 S2 S2
by checking whether the input value (BIN 16 bits)
D
Input value -
S3 S1
-
Input value
S3 S2
.......0
Upper limit value
D
D )
Input value (
Dead band upper
limit value ( )
S3
are in the range of from -32768 to 32767.
10
..............
S1
-32768
7FF6 32758
H
by checking whether the input value (BIN 32 bits)
D
+1 D
S3 S1 S1
Lower limit value Output value
+1 D
S3 S2 S2
Upper limit value Output value
D
0
Output value
+1, D )
Input value ( ,
S3
, +1)
S2 S2
+1) are within the range of from -2147483648 to 2147483647.
S3 S3
and or not.
S1 S2
Lower limit value Output value
D
Upper limit value
Output value
D
Output value
)
S2
+1) and ( ,
S1 S1
+1 D
+1 D
D
+1
+1)
S3
S2