NORD Drivesystems BU0550 - Manual (Page 28)

PLC logic for NORD SK 54xE frequency inverters
28 BU 0550 GB-0813
3.2.2.9 MUL and MUL(
Multiplication of the accumulator with one or more variables or constants.
For bracket multiplication, the accumulator is multiplied by the result of the expression in brackets. Up to 6
bracket levels are possible.
Both values must belong to the same type of variable.
BOOL BYTE INT DINT
Possible data types X X X
Commands Explanation
LD 25 Load the multiplier
MUL Var1, Var2 25 * Var1 * Var2
ST Var2 Save the result
LD 25 Load the multiplier
MUL( Var1 Result = 25*(Var1 + Var2)
ADD Var2
)
ST Var3 Save the result as Var3
Table 19 MUL and MUL(
3.2.2.10 SUB and SUB(
Subtracts the accumulator from one or more variables or constants.
For bracket subtraction, the accumulator is subtracted from the result of the expression in brackets. Up to 6
bracket levels are possible.
The values to be subtracted must belong to the same type of variable.
BOOL BYTE INT DINT
Possible data types X X X
Commands Explanation
LD 10
SUB Value1 Result = 10 - Value1
ST Value1
LD 20
SUB Value1,Value2,30 Result = 20 - Value1 - Value2 - 30
ST Value1
LD 20
SUB( 6 Subtract 20 from the contents of the bracket
AND 2
) Result = 20 - (6 AND 2)
ST Value1 Save the result 18 in Var1
Table 20 SUB and SUB(