Mitsubishi Electric MELSEC-Q/L - BIN 16-Bit Dead Band Controls, bin 32-Bit Dead Band Controls

7 APPLICATION INSTRUCTIONS
7.13 Data Control Instructions
665
7
BIN 16-bit dead band controls, BIN 32-bit dead band controls
BAND(P), DBAND(P)
Processing details
■BAND
• Controls the output value to be stored at the device designated by (D) by checking whether the input value (BIN 16 bits)
designated by (S3) is within the range of dead band upper and lower limit values specified by (S1) and (S2) or not. Output
value is controlled in the way shown below:
• The values that can be designated by (S1), (S2), and (S3) are in the range of from -32768 to 32767.
• The output value stored at (D) is a signed 16-bit BIN value. Therefore, if the operation results exceed the range of from -
32768 to 32767, the following will take place:
Ex.
When the dead band lower limit value (S1) is 10 and the input value (S3) is -32768:
-32768 - 10 = 8000H - AH = 7FF6H = 32758
(S1): Lower limit value of dead band (no output band) (BIN 16/32 bits)
(S2): Upper limit value of dead band (no output band) (BIN 16/32 bits)
(S3): Input value to be controlled by a dead band control (BIN 16/32 bits)
(D): Head number of the devices where the output value controlled by the dead band control will be stored (BIN 16/32 bits)
Setting
data
Internal device R, ZR J\ U\G Zn Constant
K, H
Others
Bit Word Bit Word
(S1)  
(S2)  
(S3)  
(D)  
Condition Result
Lower limit value (S1) > Input value (S3) Input value (S3) - Lower limit value (S1)  Output value (D)
Upper limit value (S2) < Input value (S3) Input value (S3) - Upper limit value (S2)  Output value (D)
Lower limit value (S1)  Input value (S3)  Upper limit value (S2) 0  Output value (D)
Basic
Process
High
performance
Redundant Universal LCPU
BAND, DBAND
BANDP, DBANDP
D
S1 S2
Command
Command
P
S3
D
S1 S2 S3
indicates an instruction symbol of BAND/DBAND.
D
Output value ( )
S3
Dead band upper
limit value ( )
S1
Dead band
lower limit value ( )
S2
Input value ( )
0