Siemens SIMATIC S7-1200

Basic instructions
8.5 Math functions
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
255
Table 8- 41 Data types for the parameters
Parameter
Data type
Description
Operand
Variant
Operand to evaluate for whether it is an array.
8.5
Math functions
8.5.1
CALCULATE (Calculate)
Table 8- 42 CALCULATE instruction
LAD / FBD
SCL
Description
Use the stand-
ard SCL math
expressions to
create the equa-
tion.
The CALCULATE instruction lets you create a math function that oper-
ates on inputs (IN1, IN2, .. INn) and produces the result at OUT, ac-
cording to the equation that you define.
• Select a data type first. All inputs and the output must be the same
data type.
• To add another input, click the icon at the last input.
Table 8- 43 Data types for the parameters
Parameter
Data type
1
IN1, IN2, ..INn
SInt, Int, DInt, USInt, UInt, UDInt, Real, LReal, Byte, Word, DWord
OUT
SInt, Int, DInt, USInt, UInt, UDInt, Real, LReal, Byte, Word, DWord
1
The IN and OUT parameters must be the same data type (with implicit conversions of the input parameters). For exam-
ple: A SINT value for an input would be converted to an INT or a REAL value if OUT is an INT or REAL