F25_SUB

Redundant instruction

NOTE

This is a redundant instruction. It is replaced by: SUB

Subtracts the 16-bit equivalent constant or 16-bit area specified by s from the 16-bit area specified by d if the trigger EN is in the ON-state. The result is stored in d (minuend area). All 16-bit values are treated as integer values.

Parameters

Input

s (WORD, INT, UINT): Subtrahend

Output

d (WORD, INT, UINT): Minuend and result

Example

(1) Example value 16
(2) Example value 27
(3) Result value -11 if trigger is ON

Remarks

If the required data type is supported, we recommend using the IEC instruction SUB.
The variables s and d have to be of the same data type.

Error flags

sys_bIsEqual (turns to TRUE for one scan): if the calculated result is 0.
sys_bIsCarry (turns to TRUE for one scan): if the result exceeds the range of 16-bit data (overflow or underflow).