diff --git a/oppo/__init__.py b/oppo/__init__.py
index 2e9dfda8a..70f3d0d05 100755
--- a/oppo/__init__.py
+++ b/oppo/__init__.py
@@ -39,7 +39,7 @@ class SmartPluginWebIf():
 
 else:
     builtins.SDP_standalone = False
-from lib.model.sdp.globals import (PLUGIN_ATTR_NET_HOST, PLUGIN_ATTR_CONNECTION, PLUGIN_ATTR_SERIAL_PORT, PLUGIN_ATTR_CONN_TERMINATOR, CONN_NET_TCP_CLI, CONN_SER_ASYNC)
+from lib.model.sdp.globals import (PLUGIN_ATTR_NET_HOST, PLUGIN_ATTR_CONNECTION, PLUGIN_ATTR_SERIAL_PORT, PLUGIN_ATTR_CONN_TERMINATOR, CONN_NET_TCP_CLI, CONN_SER_ASYNC, PLUGIN_ATTR_CMD_CLASS)
 from lib.model.smartdeviceplugin import SmartDevicePlugin, Standalone
 
 CUSTOM_INPUT_NAME_COMMAND = 'custom_inputnames'
@@ -63,6 +63,8 @@ def _set_device_defaults(self):
             self._parameters[PLUGIN_ATTR_CONNECTION] = CONN_NET_TCP_CLI
         elif PLUGIN_ATTR_SERIAL_PORT in self._parameters and self._parameters[PLUGIN_ATTR_SERIAL_PORT]:
             self._parameters[PLUGIN_ATTR_CONNECTION] = CONN_SER_ASYNC
+        
+        self._parameters[PLUGIN_ATTR_CMD_CLASS] = SDPCommandParseStr
 
         b = self._parameters[PLUGIN_ATTR_CONN_TERMINATOR].encode()
         b = b.decode('unicode-escape').encode()
diff --git a/oppo/plugin.yaml b/oppo/plugin.yaml
index 1210475d2..038121d2a 100755
--- a/oppo/plugin.yaml
+++ b/oppo/plugin.yaml
@@ -39,36 +39,6 @@ parameters:
             de: Serieller Anschluss (z.B. /dev/ttyUSB0 oder COM1)
             en: serial port (e.g. /dev/ttyUSB0 or COM1)
 
-    conn_type:
-        type: str
-        mandatory: false
-        valid_list:
-        -   ''
-        -   net_tcp_request
-        -   net_tcp_client
-        -   net_tcp_jsonrpc
-        -   net_udp_server
-        -   serial
-        -   serial_async
-
-        description:
-            de: Verbindungstyp
-            en: connection type
-
-    command_class:
-        type: str
-        default: SDPCommandParseStr
-        valid_list:
-        -   SDPCommand
-        -   SDPCommandStr
-        -   SDPCommandParseStr
-        -   SDPCommandJSON
-        -   SDPCommandViessmann
-
-        description:
-            de: Klasse für Verarbeitung von Kommandos
-            en: class for command processing
-
     model:
         type: str
         mandatory: false