enhance simulation

python/MXMotion.py

@@ -114,7 +114,8 @@ Coord[1].Q[0]=-3 //motion program started and waits. Arm(-2) is done in triggerS
       self.sync_prg = prg
       #download and start triggerSync code
       comm=self.comm
-      if comm is None: return
+      if comm is None:
+        _log.info('simulated');return
 
       mode=0 #mode to pass to triggerSync program
       if sync_mode==2:mode+=1  #synchronize