diff --git a/lib/Hoymiles/src/commands/RealTimeRunDataCommand.cpp b/lib/Hoymiles/src/commands/RealTimeRunDataCommand.cpp
index e820375..79c66b9 100644
--- a/lib/Hoymiles/src/commands/RealTimeRunDataCommand.cpp
+++ b/lib/Hoymiles/src/commands/RealTimeRunDataCommand.cpp
@@ -23,6 +23,12 @@ bool RealTimeRunDataCommand::handleResponse(InverterAbstract* inverter, fragment
         inverter->Statistics()->appendFragment(offs, fragment[i].fragment, fragment[i].len);
         offs += (fragment[i].len);
     }
+    inverter->Statistics()->resetRxFailureCount();
     inverter->Statistics()->setLastUpdate(millis());
     return true;
+}
+
+void RealTimeRunDataCommand::gotTimeout(InverterAbstract* inverter)
+{
+    inverter->Statistics()->incrementRxFailureCount();
 }
\ No newline at end of file
diff --git a/lib/Hoymiles/src/commands/RealTimeRunDataCommand.h b/lib/Hoymiles/src/commands/RealTimeRunDataCommand.h
index 0044ab0..ff150cb 100644
--- a/lib/Hoymiles/src/commands/RealTimeRunDataCommand.h
+++ b/lib/Hoymiles/src/commands/RealTimeRunDataCommand.h
@@ -7,4 +7,5 @@ public:
     explicit RealTimeRunDataCommand(uint64_t target_address = 0, uint64_t router_address = 0, time_t time = 0);
 
     virtual bool handleResponse(InverterAbstract* inverter, fragment_t fragment[], uint8_t max_fragment_id);
+    virtual void gotTimeout(InverterAbstract* inverter);
 };
\ No newline at end of file
diff --git a/lib/Hoymiles/src/inverters/InverterAbstract.cpp b/lib/Hoymiles/src/inverters/InverterAbstract.cpp
index 386a4b0..d6c1f01 100644
--- a/lib/Hoymiles/src/inverters/InverterAbstract.cpp
+++ b/lib/Hoymiles/src/inverters/InverterAbstract.cpp
@@ -49,6 +49,11 @@ bool InverterAbstract::isProducing()
     return Statistics()->getChannelFieldValue(CH0, FLD_PAC) > 0;
 }
 
+bool InverterAbstract::isReachable()
+{
+    return Statistics()->getRxFailureCount() <= MAX_ONLINE_FAILURE_COUNT;
+}
+
 AlarmLogParser* InverterAbstract::EventLog()
 {
     return _alarmLogParser.get();
diff --git a/lib/Hoymiles/src/inverters/InverterAbstract.h b/lib/Hoymiles/src/inverters/InverterAbstract.h
index 3738f97..bd53f9e 100644
--- a/lib/Hoymiles/src/inverters/InverterAbstract.h
+++ b/lib/Hoymiles/src/inverters/InverterAbstract.h
@@ -23,6 +23,7 @@ enum {
 #define MAX_RF_FRAGMENT_COUNT 13
 #define MAX_RETRANSMIT_COUNT 5 // Used to send the retransmit package
 #define MAX_RESEND_COUNT 4 // Used if all packages are missing
+#define MAX_ONLINE_FAILURE_COUNT 2
 
 class CommandAbstract;
 
@@ -38,6 +39,7 @@ public:
     virtual const uint8_t getAssignmentCount() = 0;
 
     bool isProducing();
+    bool isReachable();
 
     void clearRxFragmentBuffer();
     void addRxFragment(uint8_t fragment[], uint8_t len);
diff --git a/lib/Hoymiles/src/parser/StatisticsParser.cpp b/lib/Hoymiles/src/parser/StatisticsParser.cpp
index a5dc334..ad02a66 100644
--- a/lib/Hoymiles/src/parser/StatisticsParser.cpp
+++ b/lib/Hoymiles/src/parser/StatisticsParser.cpp
@@ -112,6 +112,21 @@ void StatisticsParser::setChannelMaxPower(uint8_t channel, uint16_t power)
     }
 }
 
+void StatisticsParser::resetRxFailureCount()
+{
+    _rxFailureCount = 0;
+}
+
+void StatisticsParser::incrementRxFailureCount()
+{
+    _rxFailureCount++;
+}
+
+uint32_t StatisticsParser::getRxFailureCount()
+{
+    return _rxFailureCount;
+}
+
 static float calcYieldTotalCh0(StatisticsParser* iv, uint8_t arg0)
 {
     float yield = 0;
@@ -168,4 +183,4 @@ static float calcIrradiation(StatisticsParser* iv, uint8_t arg0)
             return iv->getChannelFieldValue(arg0, FLD_PDC) / iv->getChannelMaxPower(arg0 - 1) * 100.0f;
     }
     return 0.0;
-}
\ No newline at end of file
+}
diff --git a/lib/Hoymiles/src/parser/StatisticsParser.h b/lib/Hoymiles/src/parser/StatisticsParser.h
index 5b64624..f1e7e4f 100644
--- a/lib/Hoymiles/src/parser/StatisticsParser.h
+++ b/lib/Hoymiles/src/parser/StatisticsParser.h
@@ -113,6 +113,10 @@ public:
     uint16_t getChannelMaxPower(uint8_t channel);
     void setChannelMaxPower(uint8_t channel, uint16_t power);
 
+    void resetRxFailureCount();
+    void incrementRxFailureCount();
+    uint32_t getRxFailureCount();
+
 private:
     uint8_t _payloadStatistic[STATISTIC_PACKET_SIZE] = {};
     uint8_t _statisticLength = 0;
@@ -120,4 +124,6 @@ private:
 
     const byteAssign_t* _byteAssignment;
     uint8_t _byteAssignmentCount;
+
+    uint32_t _rxFailureCount = 0;
 };
\ No newline at end of file