- Removed SCStart/EndBuffering as far as possible and fixed an issue with

the capture command in that it not put resluts into the Tcl interpreter.
  This broke scriptcontext scripts in complicated situations.
- Resolved some issues with the TAS calculation and negative scattering sense.
- Fixed a bug which did not reset the state to idle after checking
  reachability in confvirtualmot.c

eigera2.c

@@ -24,6 +24,7 @@
 #define RUNNING   1
 #define WAITSTOP  2
 #define WAITSLIT  3
+#define WAITIDLE  4
 /* ---------------------------- motor names --------------------*/
 #define A2 "a2rot"
 #define A2R "d2r"
@@ -153,8 +154,11 @@ static long eigera2SetValue(void *data, SConnection *pCon, float val){
     self = (eigera2)data;
 
     if(self->state != IDLE){
-    	SCWrite(pCon,"ERROR: Eiger A2 still busy...", eLogError);
-    	return HWFault;
+    	SCWrite(pCon,"WARNING: stopping busy A2", eLogError);
+	self->a2Target = val;
+	eigera2Halt(data);
+	self->state = WAITIDLE;
+    	return OKOK;
     }
     self->a2Target = val;
     setNewMotorTarget(self->motorList,A2,self->a2Target);
@@ -204,6 +208,15 @@ static int eigera2CheckStatus(void *data, SConnection *pCon){
     self = (eigera2)data;
 
     switch(self->state){
+    case WAITIDLE:
+    	status = self->listDriv->CheckStatus(&self->motorList,pCon);
+    	if(status == HWFault || status == HWIdle){
+    		self->state = IDLE;
+		eigera2SetValue(data,pCon, self->a2Target);
+    	} else {
+	  return status;
+	}
+	break;
     case RUNNING:
     case WAITSLIT:
     	status = self->listDriv->CheckStatus(&self->motorList,pCon);