EMTH
(Original Document)
Overview
This section describes the DFBs of the EMTH family (extended math) which contains a library of double-precision math, square root and logarithm calculations and floating point (FP) arithmetic functions.
EMTH control inputs and outputs are function-dependent.
NOTE: Some of the blocks in this part make use of floating point values (which might be also contained inside a structure). You may want to watch this data via an animation table or via the Instruction Editor. In case of an animation table a floating point value located at %MWx can be watched by adding a new row %MFx to the animation table. Please note that %MF addresses are not available on M340 PLCs. In this case an additional REAL variable located at %MWx can help. For additinal informations regarding addressing refer to Language Reference → Data Description → Data Instances → Direct Addressing Data Instances.
What Is in This Part?
This part contains the following chapters: