diff -r 8b3faaf3715e -r 2390b409eb93 runtime/plc_Linux_main.c
--- a/runtime/plc_Linux_main.c	Fri Jun 27 09:38:16 2008 +0200
+++ b/runtime/plc_Linux_main.c	Fri Jun 27 16:21:22 2008 +0200
@@ -2,14 +2,46 @@
 #include <string.h>
 #include <time.h>
 #include <signal.h>
+#include <stdlib.h>
 
+void PLC_GetTime(IEC_TIME *CURRENT_TIME)
+{
+    clock_gettime(CLOCK_REALTIME, CURRENT_TIME);
+}
 
 void PLC_timer_notify(sigval_t val)
 {
-    clock_gettime(CLOCK_REALTIME, &__CURRENT_TIME);
+    PLC_GetTime(&__CURRENT_TIME);
     __run();
 }
 
+timer_t PLC_timer;
+
+void PLC_SetTimer(long long next, long long period)
+{
+    struct itimerspec timerValues;
+	/*
+	printf("SetTimer(%lld,%lld)\n",next, period);
+	*/
+    memset (&timerValues, 0, sizeof (struct itimerspec));
+	{
+#ifdef __lldiv_t_defined
+		lldiv_t nxt_div = lldiv(next, 1000000000);
+		lldiv_t period_div = lldiv(period, 1000000000);
+	    timerValues.it_value.tv_sec = nxt_div.quot;
+	    timerValues.it_value.tv_nsec = nxt_div.rem;
+	    timerValues.it_interval.tv_sec = period_div.quot;
+	    timerValues.it_interval.tv_nsec = period_div.rem;
+#else
+	    timerValues.it_value.tv_sec = next / 1000000000;
+	    timerValues.it_value.tv_nsec = next % 1000000000;
+	    timerValues.it_interval.tv_sec = period / 1000000000;
+	    timerValues.it_interval.tv_nsec = period % 1000000000;
+#endif
+	}	
+    timer_settime (PLC_timer, 0, &timerValues, NULL);
+}
+
 void catch_signal(int sig)
 {
   signal(SIGTERM, catch_signal);
@@ -19,36 +51,30 @@
 
 int main(int argc,char **argv)
 {
-    timer_t timer;
     struct sigevent sigev;
-    long tv_nsec = 1000000 * (maxval(common_ticktime__,1)%1000);
-    time_t tv_sec = common_ticktime__/1000;
-    struct itimerspec timerValues;
+    /* Translate PLC's microseconds to Ttick nanoseconds */
+    Ttick = 1000000 * maxval(common_ticktime__,1);
     
     memset (&sigev, 0, sizeof (struct sigevent));
-    memset (&timerValues, 0, sizeof (struct itimerspec));
     sigev.sigev_value.sival_int = 0;
     sigev.sigev_notify = SIGEV_THREAD;
     sigev.sigev_notify_attributes = NULL;
     sigev.sigev_notify_function = PLC_timer_notify;
-    timerValues.it_value.tv_sec = tv_sec;
-    timerValues.it_value.tv_nsec = tv_nsec;
-    timerValues.it_interval.tv_sec = tv_sec;
-    timerValues.it_interval.tv_nsec = tv_nsec;
 
+    timer_create (CLOCK_REALTIME, &sigev, &PLC_timer);
     if(  __init(argc,argv) == 0 ){
-        timer_create (CLOCK_REALTIME, &sigev, &timer);
-        timer_settime (timer, 0, &timerValues, NULL);
+        PLC_SetTimer(Ttick,Ttick);
         
         /* install signal handler for manual break */
         signal(SIGTERM, catch_signal);
         signal(SIGINT, catch_signal);
-        
+        /* Wait some signal */
         pause();
-        
-        timer_delete (timer);
+        /* Stop the PLC */
+        PLC_SetTimer(0,0);
     }
     __cleanup();
+    timer_delete (PLC_timer);
     
     return 0;
 }