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Func Block files can call C language library function in form of floating, arithmetic like sin,
cos, tan.
XC series PLC only support local variable, while XD/XL series PLC support both local and
global variable. This makes C language Block more flexible and convenient.
XDPPro software v3.3 and later version keep C function library:
In this function block, user can call the C function directly:
For example: click TEL10, the function name will show on the project bar:
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