F290_DZONE

The function adds an offset value to the input value at input s3_In. The offset value for the negative and positive area are entered at inputs s1_NegBias and s2_PosBias.

Parameters

Input

s1_NegBias (DWORD, DINT, UDINT, DATE, TOD, DT)

area where negative bias value is stored or negative bias value data

s2_PosBias (DWORD, DINT, UDINT, DATE, TOD, DT)

area where positive bias value is stored or positive bias value data

s3_In (DWORD, DINT, UDINT, DATE, TOD, DT)

area where input value is stored or input value data

Output

d (DWORD, DINT, UDINT, DATE, TOD, DT)

area where output value is stored

Remarks

Instead of using this F instruction, we recommend using the corresponding FP7 instruction: FP_ZONE

The result of the function is returned at output d as follows:

• If the input value at input s3_In < 0, the negative offset value at input s1_NegBias is added to the input value at s3_In, and the result is stored as the output value at d.

• If the input value at input s3_In = 0, 0 is returned at the output value to output d.

• If the input value at input s3_In > 0, the positive offset value at input s2_PosBias is added to the input value at s3_In, and the result is stored as the output value at d.

1.  (1) Output value d
2.  (2) Positive bias value s2_PosBias
3.  (3) Input value s3_In
4.  (4) Negative bias value s1_NegBias

Error flags

sys_bIsEqual (turns to TRUE for one scan)

if the calculation results in an overflow or an underflow of output d.

sys_bIsCarry (turns to TRUE for one scan)

if the input value s3_In is 0.