diff --git a/configure.ac b/configure.ac
index 37d4ab21..c9a30b66 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@ AC_INIT([ebusd], [0.5.0], [ebusd@liwest.at], [ebusd], [https://github.com/yuhu-/
 AC_PROG_CXX
 
 AC_CONFIG_AUX_DIR([build])
-AC_CONFIG_SRCDIR([src/ebusd/main.cpp])
+AC_CONFIG_SRCDIR([src/ebusd/ebusd.cpp])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_FILES([Makefile
 		 src/lib/ebus/Makefile
diff --git a/src/ebusd/Makefile.am b/src/ebusd/Makefile.am
index 742edf10..bf57211a 100644
--- a/src/ebusd/Makefile.am
+++ b/src/ebusd/Makefile.am
@@ -15,7 +15,7 @@ ebusd_SOURCES = message.h \
 		ebusloop.h \
 		baseloop.cpp \
 		baseloop.h \
-		main.cpp
+		ebusd.cpp
 
 ebusd_LDADD = $(top_srcdir)/src/lib/utils/libutils.a \
               $(top_srcdir)/src/lib/ebus/libebus.a \
diff --git a/src/ebusd/main.cpp b/src/ebusd/ebusd.cpp
similarity index 96%
rename from src/ebusd/main.cpp
rename to src/ebusd/ebusd.cpp
index 459c5579..6aa90d8c 100644
--- a/src/ebusd/main.cpp
+++ b/src/ebusd/ebusd.cpp
@@ -60,7 +60,11 @@ void define_args()
 		  Appl::type_int, Appl::opt_mandatory);
 
 	A.addItem("p_recvtimeout", Appl::Param(15000), "", "recvtimeout",
-		  "receive timeout in 'us' (15000)\n",
+		  "receive timeout in 'us' (15000)",
+		  Appl::type_long, Appl::opt_mandatory);
+
+	A.addItem("p_acquiretime", Appl::Param(4200), "", "acquiretime",
+		  "waiting time for bus acquire in 'us' (4200)\n",
 		  Appl::type_long, Appl::opt_mandatory);
 
 	A.addItem("p_pollinterval", Appl::Param(5), "", "pollinterval",
diff --git a/src/ebusd/ebusloop.cpp b/src/ebusd/ebusloop.cpp
index 6a2f04ab..793a0f4a 100644
--- a/src/ebusd/ebusloop.cpp
+++ b/src/ebusd/ebusloop.cpp
@@ -45,6 +45,8 @@ EBusLoop::EBusLoop(Commands* commands)
 	m_sendRetries = A.getParam<int>("p_sendretries");
 
 	m_lockRetries = A.getParam<int>("p_lockretries");
+
+	m_acquireTime = A.getParam<long>("p_acquiretime");
 }
 
 EBusLoop::~EBusLoop()
@@ -111,18 +113,18 @@ void* EBusLoop::run()
 							busCommand->setResult(std::string(), RESULT_OK);
 						}
 						else {
+							sendRetries = 0;
 							L.log(bus, event, " send retry failed", sendRetries);
 
 							if (busCommand->isPoll() == true)
 								delete m_sendBuffer.remove();
 							else
 								busCommand->sendSignal();
-
-							sendRetries = 0;
 						}
 					}
 					else {
 						sendRetries = 0;
+
 						if (busCommand->isPoll() == true) {
 							m_commands->storePolData(busCommand->getMessageStr().c_str()); // TODO use getResult()
 							delete busCommand;
@@ -138,14 +140,14 @@ void* EBusLoop::run()
 					L.log(bus, trace, " acquire bus failed");
 
 					if (lockRetries >= m_lockRetries) {
+						lockRetries = 0;
 						L.log(bus, event, " lock bus failed");
+
 						BusCommand* busCommand = m_sendBuffer.remove();
 						if (busCommand->isPoll() == true)
 							delete busCommand;
 						else
 							busCommand->sendSignal();
-
-						lockRetries = 0;
 					}
 					else {
 						lockRetries++;
@@ -294,6 +296,9 @@ int EBusLoop::acquireBus()
 		return RESULT_ERR_SEND;
 	}
 
+	// wait ~4200 usec for receive
+	usleep(m_acquireTime);
+
 	// receive 1 byte - must be QQ
 	numRecv = m_port->recv(0);
 
diff --git a/src/ebusd/ebusloop.h b/src/ebusd/ebusloop.h
index 1605451e..95c9731d 100644
--- a/src/ebusd/ebusloop.h
+++ b/src/ebusd/ebusloop.h
@@ -71,6 +71,7 @@ private:
 	long m_recvTimeout;
 	int m_sendRetries;
 	int m_lockRetries;
+	long m_acquireTime;
 
 	unsigned char fetchByte();
 	void collectCycData(const int numRecv);