diff --git a/counter.c b/counter.c
index e37447f1..a5201971 100644
--- a/counter.c
+++ b/counter.c
@@ -392,10 +392,10 @@ int DoCount(pCounter self, float fPreset, SConnection * pCon, int iBlock)
   /* set Preset */
   SetCounterPreset(self, fPreset);
 
-  if(iBlock){
-	  level = RUNDRIVE;
+  if (iBlock == 0) {
+    level = RUNRUN;
   } else {
-	  level = RUNRUN;
+    level = RUNDRIVE;
   }
   iRet = StartDevice(GetExecutor(), self->name, self->pDes, self, pCon,
                      level, fPreset);
@@ -405,8 +405,8 @@ int DoCount(pCounter self, float fPreset, SConnection * pCon, int iBlock)
     return 0;
   }
 
-  /* continue only if in blocking mode */
-  if (!iBlock) {
+  /* continue only if in blocking mode, or from tas scan (iBlock == 2) */
+  if (iBlock != 1) {
     return 1;
   }