diff --git a/doc/picontrolserver.html b/doc/picontrolserver.html
index 2b8fcb1..3a6243e 100644
--- a/doc/picontrolserver.html
+++ b/doc/picontrolserver.html
@@ -12,7 +12,7 @@ Modul fuer die Verwaltung der PLC-Slave Funktionen.
 <h3 style="background-color:#FFFFFF;color:#FF0000">
 Global Attributes</h3>
 <table>
-<tr><td>HASH_FAIL</td></tr><tr><td>HASH_NULL</td></tr><tr><td>__author__</td></tr><tr><td>__copyright__</td></tr><tr><td>__license__</td></tr>
+<tr><td>HASH_FAIL</td></tr><tr><td>HASH_NULL</td></tr><tr><td>HASH_PICT</td></tr><tr><td>HASH_RPIO</td></tr><tr><td>__author__</td></tr><tr><td>__copyright__</td></tr><tr><td>__license__</td></tr>
 </table>
 <h3 style="background-color:#FFFFFF;color:#FF0000">
 Classes</h3>
diff --git a/eric-revpipyload.api b/eric-revpipyload.api
index 86a5bd7..b9fa29e 100644
--- a/eric-revpipyload.api
+++ b/eric-revpipyload.api
@@ -34,6 +34,8 @@ mqttserver.__copyright__?9
 mqttserver.__license__?9
 picontrolserver.HASH_FAIL?7
 picontrolserver.HASH_NULL?7
+picontrolserver.HASH_PICT?7
+picontrolserver.HASH_RPIO?7
 picontrolserver.RevPiSlave.check_connectedacl?4()
 picontrolserver.RevPiSlave.disconnect_all?4()
 picontrolserver.RevPiSlave.disconnect_replace_ios?4()
diff --git a/revpipyload/picontrolserver.py b/revpipyload/picontrolserver.py
index ca132a6..19a7960 100644
--- a/revpipyload/picontrolserver.py
+++ b/revpipyload/picontrolserver.py
@@ -6,7 +6,6 @@ __license__ = "GPLv3"
 import proginit
 import socket
 from fcntl import ioctl
-from hashlib import md5
 from shared.ipaclmanager import IpAclManager
 from threading import Event, Thread
 from timeit import default_timer
@@ -14,6 +13,8 @@ from timeit import default_timer
 # Hashvalues
 HASH_NULL = b'\x00' * 16
 HASH_FAIL = b'\xff' * 16
+HASH_PICT = HASH_FAIL
+HASH_RPIO = HASH_NULL
 
 
 class RevPiSlave(Thread):
@@ -409,22 +410,10 @@ class RevPiSlaveDev(Thread):
 
             elif cmd == b'PH':
                 # piCtory md5 Hashwert senden (16 Byte)
-                try:
-                    with open(proginit.pargs.configrsc, "rb") as fh_pic:
-                        # Hashwert erzeugen und senden
-                        file_hash = md5(fh_pic.read()).digest()
-                        proginit.logger.debug(
-                            "send pictory hashvalue: {0}"
-                            "".format(file_hash)
-                        )
-                        self._devcon.sendall(file_hash)
-                except Exception as e:
-                    proginit.logger.error(
-                        "error on pictory hash value transfair: {0}".format(e)
-                    )
-                    break
-                else:
-                    continue
+                proginit.logger.debug(
+                    "send pictory hashvalue: {0}".format(HASH_PICT)
+                )
+                self._devcon.sendall(HASH_PICT)
 
             elif cmd == b'RP':
                 # Replace_IOs Konfiguration senden
@@ -452,27 +441,10 @@ class RevPiSlaveDev(Thread):
                 # Replace_IOs md5 Hashwert senden (16 Byte)
                 self.got_replace_ios = True
 
-                replace_ios = proginit.conf["DEFAULT"].get("replace_ios", "")
-                try:
-                    if replace_ios:
-                        with open(replace_ios, "rb") as fh:
-                            # Hashwert erzeugen und senden
-                            file_hash = md5(fh.read()).digest()
-                    else:
-                        file_hash = HASH_NULL
-                    proginit.logger.debug(
-                        "send replace_ios hashvalue: {0}"
-                        "".format(file_hash)
-                    )
-                    self._devcon.sendall(file_hash)
-                except Exception as e:
-                    proginit.logger.error(
-                        "error on replace_ios hash value transfair: {0}"
-                        "".format(e)
-                    )
-                    self._devcon.sendall(HASH_FAIL)
-                else:
-                    continue
+                proginit.logger.debug(
+                    "send replace_ios hashvalue: {0}".format(HASH_RPIO)
+                )
+                self._devcon.sendall(HASH_RPIO)
 
             elif cmd == b'EX':
                 # Sauber Verbindung verlassen
diff --git a/revpipyload/revpipyload.py b/revpipyload/revpipyload.py
index 8af8049..625e31f 100755
--- a/revpipyload/revpipyload.py
+++ b/revpipyload/revpipyload.py
@@ -77,9 +77,7 @@ class RevPiPyLoad():
 
         # Dateimerker
         self.pictorymtime = 0
-        self.pictoryhash = b''
         self.replaceiosmtime = 0
-        self.replaceiohash = b''
         self.replaceiofail = False
 
         # Berechtigungsmanger
@@ -611,11 +609,13 @@ class RevPiPyLoad():
             return False
         self.pictorymtime = mtime
 
+        # TODO: Nur "Devices" list vergleich
+
         with open(proginit.pargs.configrsc, "rb") as fh:
             file_hash = md5(fh.read()).hexdigest()
-        if self.pictoryhash == file_hash:
+        if picontrolserver.HASH_PICT == file_hash:
             return False
-        self.pictoryhash = file_hash
+        picontrolserver.HASH_PICT = file_hash
 
         return True
 
@@ -638,9 +638,10 @@ class RevPiPyLoad():
 
         if not self.replace_ios_config or self.replaceiofail:
             # Dateipfad leer, prüfen ob es vorher einen gab
-            if self.replaceiosmtime > 0 or self.replaceiohash:
+            if self.replaceiosmtime > 0 \
+                    or picontrolserver.HASH_RPIO != picontrolserver.HASH_NULL:
                 self.replaceiosmtime = 0
-                self.replaceiohash = b''
+                picontrolserver.HASH_RPIO = picontrolserver.HASH_NULL
                 return True
 
         else:
@@ -651,9 +652,11 @@ class RevPiPyLoad():
 
             with open(self.replace_ios_config, "rb") as fh:
                 file_hash = md5(fh.read()).hexdigest()
-            if self.replaceiohash == file_hash:
+            if picontrolserver.HASH_RPIO == file_hash:
                 return False
-            self.replaceiohash = file_hash
+            picontrolserver.HASH_RPIO = file_hash
+
+            # TODO: Instanz von ConfigParser vergleichen
 
             return True