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4.6.8
Convert REAL to LREAL
When REAL_TO_LREAL receives power flow, it converts the 32-bit single precision
floating point REAL data to the equivalent 64-bit double-precision floating point
data. REAL_TO_LREAL does not change the original REAL data.
Operands
Parameter Description
IN
The REAL value to convert to LREAL.
Q
The LREAL equivalent value of the original REAL value. All except S, SA, SB, and SC
Example
The REAL value of the square root of 2 is converted to the LREAL data type and placed in R00200.
Because the actual precision of the data in Result_Real is seven decimal places, the additional
decimal places in the data in R00200 are not valid.
4.6.9
Convert DINT to LREAL
GFK-2950C
When DINT_TO_LREAL receives power flow, it converts the double-precision
input data to 64-bit double-precision floating point data.
February 2018
Chapter 4. Ladder Diagram (LD) Programming
Allowed Operands
All except S, SA, SB, and SC
Optional
No
No
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