Subtraction - Mitsubishi Electric MELSEC Q Series Programming Manual

6 IEC FUNCTIONS

6.5.3 Subtraction

Subtraction is performed between the specified data.
Function definition
6 - 33
SUB_E
BOOL SUB_E( BOOL EN, ANY_NUM S1, ANY_NUM S2, ANY_NUM D1 );
Argument
Argument Name IN/OUT
EN IN
S1 IN
S2 IN
D1 OUT
Return value
Return Value
BOOL Execution condition (bit data)
Example of use
Argument Type
REAL b_result := SUB_E( b_select,
r_data1, r_data2, r_data3 );
INT b_result := SUB_E( b_select,
32767, D100, i_data1 );
DINT b_result := SUB_E( b_select,
di_data1,
di_data2, di_data3 );
Execution condition (Function is executed only when the result is TRUE)
Minuend data
Subtrahend data
Subtraction operation result
ST Program Conversion Result
LD
E-
LD
OUT
LD
-
LD
OUT
LD
D-
LD
OUT
For the usable data type, refer to "3.2.2 About ANY type".
Description
Description
Used Instruction
b_select LD, E-, OUT
r_data1
r_data2
r_data3
b_select
b_result
b_select LD, -, OUT
K32767 D100
i_data1
b_select
b_result
b_select LD, D-, OUT
di_data1
di_data2
di_data3
b_select
b_result
6 - 33