NORD Drivesystems BU0550 - Manual (Page 24)

PLC logic for NORD SK 54xE frequency inverters
24 BU 0550 GB-0813
3.2.2 Arithmetical operators
Operator Explanation
ABS Absolute value
ADD Addition
DIV Division
LIMIT Limiter
MAX Determines the larger of two numbers
MIN Determines the lesser of two numbers
MUX Multiplexer
MOD Modulus operation
MUL Multiplication
SUB Subtraction
Table 10 Overview of arithmetical operators
NOTE
Some of the following operators may also contain further commands. These must be placed in
brackets behind the operator
It must be noted that a space must be included behind the opened bracket. The closing bracket
must be placed on a separate line of the program.
LD Var1
ADD( Var2
SUB Var3
)
3.2.2.1 ABS
Forms the absolute value from the Accumulator.
BOOL BYTE INT DINT
Possible data types X X
Commands Explanation
LD -10 Loads the value -10
ABS Accu = 10
ST Value2 Saves the value 10 in Value1
Table 11 ABS