); //Declaration FB1 FUNCTION_BLOCK [...] FUNCTION_BLOCK FB //... FUNCTION_BLOCK FB
//Function block extended by another and [...] : FUNCTION_BLOCK POU
调用的结果也是无关紧要的。 例 2 . 例子 FUNCTION [...] _VAR //Implementation IF py^ >= 0 AND [...] <= 0 AND y <=4 THEN