diff --git a/revpipyload/mqttserver.py b/revpipyload/mqttserver.py
index 6c9fa65..f4aa9dc 100644
--- a/revpipyload/mqttserver.py
+++ b/revpipyload/mqttserver.py
@@ -143,7 +143,6 @@ class MqttServer(Thread):
                 procimg=proginit.pargs.procimg,
                 replace_io_file=self._replace_ios
             )
-
             # Schreibenen Zugriff
             if self._write_outputs:
                 self._rpi_write = revpimodio2.RevPiModIO(
@@ -152,13 +151,36 @@ class MqttServer(Thread):
                     replace_io_file=self._replace_ios
                 )
 
+            if self._replace_ios:
+                proginit.logger.info("loaded replace_ios to MQTT")
+
         except Exception as e:
-            self._rpi = None
-            self._rpi_write = None
-            proginit.logger.error(
-                "piCtory configuration not loadable for MQTT"
-            )
-            raise e
+            try:
+                # Lesend und Eventüberwachung
+                self._rpi = revpimodio2.RevPiModIO(
+                    autorefresh=self._send_events,
+                    monitoring=True,
+                    configrsc=proginit.pargs.configrsc,
+                    procimg=proginit.pargs.procimg
+                )
+                # Schreibenen Zugriff
+                if self._write_outputs:
+                    self._rpi_write = revpimodio2.RevPiModIO(
+                        configrsc=proginit.pargs.configrsc,
+                        procimg=proginit.pargs.procimg
+                    )
+                proginit.logger.warning(
+                    "replace_ios_file not loadable for MQTT - using "
+                    "defaults now | {0}".format(e)
+                )
+
+            except Exception:
+                self._rpi = None
+                self._rpi_write = None
+                proginit.logger.error(
+                    "piCtory configuration not loadable for MQTT"
+                )
+                raise e
 
         # Exportierte IOs laden
         for dev in self._rpi.device:
diff --git a/revpipyload/procimgserver.py b/revpipyload/procimgserver.py
index d9d7953..b6fbc45 100644
--- a/revpipyload/procimgserver.py
+++ b/revpipyload/procimgserver.py
@@ -101,12 +101,26 @@ class ProcimgServer():
                 procimg=proginit.pargs.procimg,
                 replace_io_file=self.replace_ios
             )
+
+            if self.replace_ios:
+                proginit.logger.info("loaded replace_ios to ProcimgServer")
+
         except Exception as e:
-            self.rpi = None
-            proginit.logger.error(
-                "piCtory configuration not loadable for ProcimgServer"
-            )
-            return e
+            try:
+                self.rpi = revpimodio2.RevPiModIO(
+                    configrsc=proginit.pargs.configrsc,
+                    procimg=proginit.pargs.procimg,
+                )
+                proginit.logger.warning(
+                    "replace_ios_file not loadable for ProcimgServer - using "
+                    "defaults now | {0}".format(e)
+                )
+            except Exception:
+                self.rpi = None
+                proginit.logger.error(
+                    "piCtory configuration not loadable for ProcimgServer"
+                )
+                return e
 
         # NOTE: Warum das?
         self.rpi.syncoutputs(device=0)
diff --git a/revpipyload/revpipyload.py b/revpipyload/revpipyload.py
index 8aed928..c25dcee 100755
--- a/revpipyload/revpipyload.py
+++ b/revpipyload/revpipyload.py
@@ -68,6 +68,7 @@ class RevPiPyLoad():
         # Klassenattribute
         self._exit = True
         self.pictorymtime = os.path.getmtime(proginit.pargs.configrsc)
+        self.replaceiosmtime = 0
         self.evt_loadconfig = Event()
         self.globalconfig = ConfigParser()
         self.logr = logsystem.LogReader()
@@ -230,6 +231,24 @@ class RevPiPyLoad():
         self.zeroonexit = \
             self.globalconfig["DEFAULT"].getboolean("zeroonexit", True)
 
+        # MTime für replace io übernehmen
+        mtime = 0
+        if self.replace_ios_config:
+            if os.access(self.replace_ios_config, os.R_OK | os.W_OK):
+                mtime = os.path.getmtime(self.replace_ios_config)
+            else:
+                proginit.logger.error(
+                    "can not access (r/w) the replace_ios file '{0}' "
+                    "using defaults".format(self.replace_ios_config)
+                )
+                self.replace_ios_config = ""
+
+        if self.replaceiosmtime != mtime:
+            # MQTT reload erforderlich
+            restart_plcmqtt = True
+
+        self.replaceiosmtime = mtime
+
         # Konfiguration verarbeiten [MQTT]
         self.mqtt = 0
         if "MQTT" in self.globalconfig:
@@ -405,7 +424,9 @@ class RevPiPyLoad():
                 )
             try:
                 self.xml_ps = procimgserver.ProcimgServer(
-                    self.xsrv, self.replace_ios_config
+                    self.xsrv,
+                    None if not self.replace_ios_config
+                    else self.replace_ios_config,
                 )
                 self.xsrv.register_function(1, self.xml_psstart, "psstart")
                 self.xsrv.register_function(1, self.xml_psstop, "psstop")
@@ -492,7 +513,8 @@ class RevPiPyLoad():
                         self.mqttclient_id,
                         self.mqttsend_on_event,
                         self.mqttwrite_outputs,
-                        self.replace_ios_config,
+                        None if not self.replace_ios_config
+                        else self.replace_ios_config,
                     )
                 except Exception as e:
                     proginit.logger.error(e)
diff --git a/setup.py b/setup.py
index cef2511..64dd099 100644
--- a/setup.py
+++ b/setup.py
@@ -41,6 +41,7 @@ setup(
         ("/etc/revpipyload", [
             "data/etc/revpipyload/aclplcslave.conf",
             "data/etc/revpipyload/aclxmlrpc.conf",
+            "data/etc/revpipyload/replace_ios.conf",
             "data/etc/revpipyload/revpipyload.conf",
         ]),
         ("share/revpipyload", glob("revpipyload/*.*")),