Mitsubishi Electronics QCPU Welding System User Manual


  Open as PDF
of 1204
 
7-325
BAND(P),DBAND(P)
1
2
3
4
6
6
7
8
7.13 Data Control Instructions
7.13.2 BIN 16-bit and 32-bit dead band controls (BAND(P),DBAND(P))
(3) The output value stored at 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:
Output value 32768 10 8000
H
A
H
7FF6
H
32758
DBAND
(1) Controls the output value to be stored at the device designated by by checking whether
the input value (BIN 32 bits) designated by ( , +1) is within the range of dead band upper
and lower limit values specified by ( , +1) and ( , +1) or not.
Output value is controlled in the way shown below:
(2) The values designated by ( , +1), ( , +1), or ( , +1) are within the range of from
2147483648 to 2147483647.
(3) The output value stored at , +1 is a signed 32-bit BIN value. Therefore, if the operation
results exceed the range of from 2147483648 to 2147483647, the following takes place:
Output value 2147483648 1000 80000000
H
000003E8
H
7FFFFC18
H
2147482648
Operation Error
(1) In the following case, an operation error occurs, the error flag (SM0) turns ON, and an error
code is stored into SD0.
The lower limit value designated by is greater than the upper limit value designated by
. (Error code: 4100)
When :
Dead band lower limit value .................10
Input value ............................................ 32768
When :
Dead band lower limit value ( , +1).....1000
Input value ( , +1) ............................... 2147483648
D
S1
S3
D
S3 S3
S1 S1
S2 S2
+1
+1
+1
S2
S3
S2
S1
S3
S1
+1
S1 S1
+1
S3 S3
+1
S3 S3
Input value
Lower limit value
Upper limit value
Input value
Lower limit value
Input value
Upper limit value
Output value
Output value
Output value
0
Input value
Input value
Lower limit value
Upper limit value
+1
D D
+1
D D
+1
D D
+1
S1 S1
+1
S3 S3
+1
S3 S3
+1
S2
S2
+1
S2 S2
When
When
When
0
D
Output value ( +1, )
D
S1
Dead band lower
limit value ( , +1)
S1
S3
Input value ( , +1)
S3
S2
Dead band upper
limit value ( , +1)
S2
S1 S1
S2 S2
S3 S3
D D
S1 S1
S3 S3
S1
S2