Do not log disconnected PVs

NON-APPROVED/COMMON/DEVICES/vacuum/COMMON/pressure.py

@@ -3,6 +3,12 @@ from org.csstudio.display.builder.runtime.script import ScriptUtil
 
 tooltip  = "N/A"
 
+# Compatibility with 4.6.3
+try:
+    PVUtil.PVHasNoValueException
+except:
+    setattr(PVUtil, 'PVHasNoValueException', Exception)
+
 try:
     pvStat   = PVUtil.getString(pvs[0]).upper()
     pvPrsStr = PVUtil.getString(pvs[2])
@@ -37,6 +43,8 @@ try:
             tooltip = pressure
     else:
         tooltip = pvPrsStr
+except PVUtil.PVHasNoValueException:
+    pass
 except Exception as e:
     ScriptUtil.getLogger().severe(str(e))
 

NON-APPROVED/COMMON/DEVICES/vacuum/vpi/pressure.py

@@ -3,6 +3,12 @@ from org.csstudio.display.builder.runtime.script import ScriptUtil
 
 tooltip  = "N/A"
 
+# Compatibility with 4.6.3
+try:
+    PVUtil.PVHasNoValueException
+except:
+    setattr(PVUtil, 'PVHasNoValueException', Exception)
+
 try:
     pvStat   = PVUtil.getString(pvs[0]).upper()
 #    pvPrsStr = PVUtil.getString(pvs[2])
@@ -39,6 +45,8 @@ try:
 #            tooltip = pressure
 #    else:
 #        tooltip = pvPrsStr
+except PVUtil.PVHasNoValueException:
+    pass
 except Exception as e:
     ScriptUtil.getLogger().severe(str(e))