//读取CPU系统时间

FUNCTION FC20 : VOID

TITLE = 'Block Title'

//

// Block Comment...

//

VERSION: '1.0'

AUTHOR: baikai

NAME: Sys_time

FAMILY: baikai

KNOW_HOW_PROTECT

VAR_OUTPUT

    // Output Parameters

year:INT;

month:INT;

day:INT;

hour:INT;

mins:INT;

second:INT;

week:INT;

END_VAR

VAR_TEMP

    // Temporary Variables

temp11:INT;

temp10:INT;

temp12:DT;

date_time:ARRAY[0..8] OF BYTE;

TS:WORD;

week_no:INT;

END_VAR

temp11:=READ_CLK(CDT := temp12   // OUT: DATE_AND_TIME

         ); // INT       

temp10:=BLKMOV(SRCBLK :=temp12  // IN: ANY

       ,DSTBLK :=date_time // OUT: ANY

       ); // INT

year:=BCD_TO_INT(date_time[0])+2000;

month:=BCD_TO_INT(date_time[1]);

day:=BCD_TO_INT(date_time[2]);

hour:=BCD_TO_INT(date_time[3]);

mins:=BCD_TO_INT(date_time[4]);

second:=BCD_TO_INT(date_time[5]);

TS:=BYTE_TO_WORD(date_time[7]);

week_no:=WORD_TO_INT(ts AND W#16#F) -1;

IF week_no = 0 THEN

    week:= 7;

ELSE

    week:=week_no;

END_IF;

END_FUNCTION

自己做的，已经测试过