dec

Short summary

Method to decrease __XWORD without overflow

Parameters

Name	Type	Comment	Kind
value	__XWORD	value to decrease	inout

Code

Declaration

METHOD PRIVATE dec
VAR_IN_OUT
	(*value to decrease*)
	value 		:__XWORD;
END_VAR

Implementation

value := SEL(value = 0, value - 1 , 0);