Script validator should not connect to the Dingo camera.

site_ansto/instrument/dingo/config/counter/counter.tcl

@@ -60,6 +60,9 @@ proc ::counter::cm_initialize {} {
 publish ::counter::cm_initialize user
 
 proc ::counter::isc_initialize {} {
+  if [SplitReply [counter_simulation]] {
+    return
+  }
   if [catch {
     variable isc_numchannels
     variable isc_monitor_address