CoDeSys get system time

codesys Get system time

1. Add get time library Add library input caa dtutil Search the library , Select double click Add

2. Define function blocks , Read time

PROGRAM PLC_PRG
VAR
 // Define the function block to read the current time 
 ReadCurrentTime:dtu.GetDateAndTime;
 // Current system time , Note that the time at this time is world time, not local time 
 dtTime:DT;
 // Update time changes 
 RTC_BLOCK:RTC;
 dtTime2:DT; 
END_VAR
ReadCurrentTime(
 xExecute:= TRUE, 
 xDone=> , 
 xBusy=> , 
 xError=> , 
 eError=> , 
 dtDateAndTime=>dtTime , 
 ePeriode=> );
RTC_BLOCK(EN:= ReadCurrentTime.xDone, PDT:= dtTime, Q=> , CDT=> dtTime2);

3. function Codesys SoftMotion Win Download run , The effect is as follows ：

4. Note that the time read at this time is world time and needs to be converted to Beijing time

PROGRAM PLC_PRG
VAR
 // Define the function block to read the current time 
 ReadCurrentTime:dtu.GetDateAndTime;
 // Current system time , Note that the time at this time is world time, not local time 
 dtTime:DT;
 // Update time changes 
 RTC_BLOCK:RTC;
 dtTime2:DT;
 // Total seconds of time 
 w_TotalSeconds :LINT;
 // Total seconds of local time 
 l_TotalSeconds:LINT;
 
 sysCurrentTime:DT;
END_VAR
ReadCurrentTime(
 xExecute:= TRUE, 
 xDone=> , 
 xBusy=> , 
 xError=> , 
 eError=> , 
 dtDateAndTime=>dtTime , 
 ePeriode=> );
 
RTC_BLOCK(EN:= ReadCurrentTime.xDone, PDT:= dtTime, Q=> , CDT=> dtTime2);
// Get the total seconds of time 
w_TotalSeconds:=DT_TO_LINT(dtTime2);
// It should be the difference between Beijing time and world time 8 Hours 
l_TotalSeconds:=w_TotalSeconds + 8 * 60 * 60;
// Convert to time format 
sysCurrentTime:=LINT_TO_DT(l_TotalSeconds);

5. You can get the local time by downloading and running again

Source download