diff --git a/malcolm/modules/pva/controllers/pvaservercomms.py b/malcolm/modules/pva/controllers/pvaservercomms.py
index <HASH>..<HASH> 100644
--- a/malcolm/modules/pva/controllers/pvaservercomms.py
+++ b/malcolm/modules/pva/controllers/pvaservercomms.py
@@ -119,6 +119,8 @@ class PvaImplementation(Loggable):
         self._controller = controller
         self._field = field
         self._request = pv_request
+        self.log.debug(
+            "Mri %r field %r got request %s", mri, field, pv_request.toDict())
 
     def _dict_to_path_value(self, pv_request):
         value = pv_request.toDict()
Add logging message for every pva request