User Manual

High−level Instructions
3 − 748
Description
The output value (real number data) stored in the area specified by D is controlled based on whether or not
the input value (real number data) specified by S3 falls within the dead-band bounded by the upper and lower
limits (real number data) set in S1 and S2.
The output value is determined based on the following conditions:
When the lower limit S1+1 and S1 are greater than the input value S3+1 and S3, the input value S3+1 and S3
minus the lower limit value S1+1 and S1 are stored in D+1 and D as the output value.
When the upper limit S2+1 and S2 are less than the input value S3+1 and S3, the input value S3+1 and S3
minus the upper limit value S2+1 and S2 are stored in D+1 and D as the output value.
When Lower limit S1+1 and S1
Input value S3+1 and S3 Upper limit S2+1 and S2, 0.0 is stored in D+1
and D as the output value.
Output value D+1 and D
In this range, zero is output.
Input value S3+1 and S3
Lower limit of deadband
S1+1 and S1
Upper limit of deadband S2+1 and S2
0
Specifying the integer device with [S1], [S2] and [S3], the integer data is internally converted to real numbers
before operations continue.
F348 FBAND, % DT10, % DT20, % DT30, DT40
R0
Specifying the integer device with [D], the real numbers are automatically converted into integer data.
F348 FBAND, DT10, DT20, DT30, % DT40
R0
When the constant K is specified in S1, S2 and S3, the operations are the same as when a integer device is
specified.
Flag conditions
・Error flag (R9007): Turns on and stays on when:
・Error flag (R9008): Turns on for an instant when:
− The area specified using the index modifier exceeds the limit.
− If data other than real number data is specified in “S1+1, S1”, “S2+1, S2”
and “S3+1, S3”.
− “S1+1, S1” > “S2+1, S2”.
− If result of operating is outside integer range when integer device is
specified in “D+1, D”.
・= flag (R900B): Turns on when result of operating is within the range of the upper and lower
limits.
・Carry flag (R9009): Turns on for an instant when the result is overflowed.