diff --git a/linux/devices/ploc/PlocSupvHelper.cpp b/linux/devices/ploc/PlocSupvHelper.cpp
index a7245cc1..ac9a3cd3 100644
--- a/linux/devices/ploc/PlocSupvHelper.cpp
+++ b/linux/devices/ploc/PlocSupvHelper.cpp
@@ -33,7 +33,7 @@ PlocSupvHelper::PlocSupvHelper(object_id_t objectId) : SystemObject(objectId), r
   lock = MutexFactory::instance()->createMutex();
 }
 
-PlocSupvHelper::~PlocSupvHelper() {}
+PlocSupvHelper::~PlocSupvHelper() = default;
 
 ReturnValue_t PlocSupvHelper::initialize() {
 #ifdef XIPHOS_Q7S
@@ -47,59 +47,102 @@ ReturnValue_t PlocSupvHelper::initialize() {
 }
 
 ReturnValue_t PlocSupvHelper::performOperation(uint8_t operationCode) {
-  ReturnValue_t result = returnvalue::OK;
-  semaphore->acquire();
+  ReturnValue_t result;
+  lock->lockMutex();
+  internalState = InternalState::IDLE;
+  lock->unlockMutex();
   while (true) {
-    switch (internalState) {
-      case InternalState::IDLE: {
-        semaphore->acquire();
-        break;
-      }
-      case InternalState::UPDATE: {
-        result = executeUpdate();
-        if (result == returnvalue::OK) {
-          triggerEvent(SUPV_UPDATE_SUCCESSFUL, result);
-        } else if (result == PROCESS_TERMINATED) {
-          // Event already triggered
-        } else {
-          triggerEvent(SUPV_UPDATE_FAILED, result);
+    semaphore->acquire();
+    int bytesRead = 0;
+    while (true) {
+      bytesRead = read(serialPort, reinterpret_cast<void*>(recBuf.data()),
+                       static_cast<unsigned int>(recBuf.size()));
+      if (bytesRead == 0) {
+        {
+          MutexGuard mg(lock);
+          if (internalState == InternalState::FINISH) {
+            // Flush received and unread data
+            tcflush(serialPort, TCIOFLUSH);
+            internalState = InternalState::IDLE;
+            break;
+          }
         }
-        internalState = InternalState::IDLE;
+      } else if (bytesRead < 0) {
+        sif::warning << "ScexUartReader::performOperation: read call failed with error [" << errno
+                     << ", " << strerror(errno) << "]" << std::endl;
         break;
-      }
-      case InternalState::CHECK_MEMORY: {
-        executeFullCheckMemoryCommand();
-        internalState = InternalState::IDLE;
-        break;
-      }
-      case InternalState::CONTINUE_UPDATE: {
-        result = continueUpdate();
-        if (result == returnvalue::OK) {
-          triggerEvent(SUPV_CONTINUE_UPDATE_SUCCESSFUL, result);
-        } else if (result == PROCESS_TERMINATED) {
-          // Event already triggered
-        } else {
-          triggerEvent(SUPV_CONTINUE_UPDATE_FAILED, result);
+      } else if (bytesRead >= static_cast<int>(recBuf.size())) {
+        sif::error << "ScexUartReader::performOperation: Receive buffer too small for " << bytesRead
+                   << " bytes" << std::endl;
+      } else if (bytesRead > 0) {
+        if (debugMode) {
+          sif::info << "Received " << bytesRead
+                    << " bytes from the Solar Cell Experiment:" << std::endl;
         }
-        internalState = InternalState::IDLE;
-        break;
+        // insert buffer into ring buffer here
+        // ReturnValue_t result = dleParser.passData(recBuf.data(), bytesRead);
+        // TODO: Parse ring buffer here
       }
-      case InternalState::REQUEST_EVENT_BUFFER: {
-        result = performEventBufferRequest();
-        if (result == returnvalue::OK) {
-          triggerEvent(SUPV_EVENT_BUFFER_REQUEST_SUCCESSFUL, result);
-        } else if (result == PROCESS_TERMINATED) {
-          // Event already triggered
+      lock->lockMutex();
+      InternalState currentState = internalState;
+      lock->unlockMutex();
+      switch (currentState) {
+        case InternalState::IDLE: {
           break;
-        } else {
-          triggerEvent(SUPV_EVENT_BUFFER_REQUEST_FAILED, result);
         }
-        internalState = InternalState::IDLE;
-        break;
+        case InternalState::UPDATE: {
+          result = executeUpdate();
+          if (result == returnvalue::OK) {
+            triggerEvent(SUPV_UPDATE_SUCCESSFUL, result);
+          } else if (result == PROCESS_TERMINATED) {
+            // Event already triggered
+          } else {
+            triggerEvent(SUPV_UPDATE_FAILED, result);
+          }
+          MutexGuard mg(lock);
+          internalState = InternalState::IDLE;
+          break;
+        }
+        case InternalState::CHECK_MEMORY: {
+          executeFullCheckMemoryCommand();
+          MutexGuard mg(lock);
+          internalState = InternalState::IDLE;
+          break;
+        }
+        case InternalState::CONTINUE_UPDATE: {
+          result = continueUpdate();
+          if (result == returnvalue::OK) {
+            triggerEvent(SUPV_CONTINUE_UPDATE_SUCCESSFUL, result);
+          } else if (result == PROCESS_TERMINATED) {
+            // Event already triggered
+          } else {
+            triggerEvent(SUPV_CONTINUE_UPDATE_FAILED, result);
+          }
+          MutexGuard mg(lock);
+          internalState = InternalState::IDLE;
+          break;
+        }
+        case InternalState::REQUEST_EVENT_BUFFER: {
+          result = performEventBufferRequest();
+          if (result == returnvalue::OK) {
+            triggerEvent(SUPV_EVENT_BUFFER_REQUEST_SUCCESSFUL, result);
+          } else if (result == PROCESS_TERMINATED) {
+            // Event already triggered
+            break;
+          } else {
+            triggerEvent(SUPV_EVENT_BUFFER_REQUEST_FAILED, result);
+          }
+          MutexGuard mg(lock);
+          internalState = InternalState::IDLE;
+          break;
+        }
+        case InternalState::HANDLER_DRIVEN: {
+          continue;
+        }
+        default:
+          sif::debug << "PlocSupvHelper::performOperation: Invalid state" << std::endl;
+          break;
       }
-      default:
-        sif::debug << "PlocSupvHelper::performOperation: Invalid state" << std::endl;
-        break;
     }
   }
 }
diff --git a/linux/devices/ploc/PlocSupvHelper.h b/linux/devices/ploc/PlocSupvHelper.h
index 809dfd5b..a54b50a6 100644
--- a/linux/devices/ploc/PlocSupvHelper.h
+++ b/linux/devices/ploc/PlocSupvHelper.h
@@ -200,13 +200,22 @@ class PlocSupvHelper : public DeviceCommunicationIF,
 
   EventBufferRequest eventBufferReq;
 
-  enum class InternalState { IDLE, UPDATE, CONTINUE_UPDATE, REQUEST_EVENT_BUFFER, CHECK_MEMORY };
+  enum class InternalState {
+    IDLE,
+    HANDLER_DRIVEN,
+    UPDATE,
+    CONTINUE_UPDATE,
+    REQUEST_EVENT_BUFFER,
+    CHECK_MEMORY,
+    FINISH
+  };
 
   InternalState internalState = InternalState::IDLE;
 
 #ifdef XIPHOS_Q7S
   SdCardManager* sdcMan = nullptr;
 #endif
+  std::array<uint8_t, 2048> recBuf = {};
   uint8_t commandBuffer[supv::MAX_COMMAND_SIZE]{};
   SpacePacketCreator creator;
   ploc::SpTcParams spParams = ploc::SpTcParams(creator);
@@ -214,6 +223,7 @@ class PlocSupvHelper : public DeviceCommunicationIF,
   std::array<uint8_t, supv::MAX_COMMAND_SIZE> tmBuf{};
 
   bool terminate = false;
+  bool debugMode = false;
 
   SimpleRingBuffer ringBuf;
   /**