Index: Components/PN_Stack/PN_Device/Sources/PNIOCMDEV_ownsm.c
===================================================================
--- Components/PN_Stack/PN_Device/Sources/PNIOCMDEV_ownsm.c	(revision 120286)
+++ Components/PN_Stack/PN_Device/Sources/PNIOCMDEV_ownsm.c	(working copy)
@@ -195,8 +195,10 @@
     return NULL;
   }
 
-  /* check if plug state machine ready */
-  if(PNS_PLUGSM_STATE_IDLE != Pns_PLUGSM_GetState(&(ptAR->tPLUG)))
+  /* check if plug state machine ready :
+     -# Plug State machine ready to process a new Plug 
+     -# Alarm channel is not blocked by CMSRL state machine (by missing Primary AR) */
+  if(!Pns_PLUGSM_isReady(ptAR))
   {
     DBGLOG_INFO("Pns: AR[%hhu]: Deferring plug due plugsm state %hhu",
         ptAR->uARIndex, Pns_PLUGSM_GetState(&(ptAR->tPLUG)));
Index: Components/PN_Stack/PN_Device/Sources/PNIOCMDEV_plugsm.c
===================================================================
--- Components/PN_Stack/PN_Device/Sources/PNIOCMDEV_plugsm.c	(revision 120286)
+++ Components/PN_Stack/PN_Device/Sources/PNIOCMDEV_plugsm.c	(working copy)
@@ -269,12 +269,9 @@
 }
 
 /**
- * @brief Handles CPMs NewData indication for a submodule
+ * @brief Handles CPMs NewData indication for plugged submodule
  *
- * @param [in] ptRsc pointer to task resources.
- * @param [in] ptRequestAr pointer to the AR that issued the WriteRequest.
- *
- * @return Result of operation.
+ * @param [in] ptAR pointer to task resources.
  */
 void
 Pns_PLUGSM_NewData_Ind(PNS_AR_T *ptAR)
@@ -288,6 +285,27 @@
 }
 
 /**
+ * @brief This function checks whether a plug alarm might be issued.
+ *
+ * @param [in] ptAR pointer to releated AR.
+ *
+ * @return True if Plug Alarm may be reported to the IOC.
+ */
+bool
+Pns_PLUGSM_isReady(PNS_AR_T *ptAR)
+{
+  /* check if plug state machine ready */
+  if(PNS_PLUGSM_STATE_IDLE != Pns_PLUGSM_GetState(&(ptAR->tPLUG)))
+    return false;
+
+  /* Check that alarm channel is not blocked */
+  if(!Pns_CMSRL_CanTransmitAlarm(ptAR))
+    return false;
+
+  return true;
+}
+
+/**
  * @}
  */