diff --git a/config/OBSW_Config.py b/config/OBSW_Config.py
index 622fba063852befa4fa75448bf46b58c1b7e8b91..a45651b1901a28cbeadb4209219029232a964257 100644
--- a/config/OBSW_Config.py
+++ b/config/OBSW_Config.py
@@ -40,6 +40,7 @@ Mission/Device specific information.
 # Object IDs
 GPS0_ObjectId = bytearray([0x44, 0x10, 0x1F, 0x00])
 GPS1_ObjectId = bytearray([0x44, 0x20, 0x20, 0x00])
+DUMMY_DEVICE_ID = bytearray([0x44, 0x00, 0xAF, 0xFE])
 
 # SIDs
 GPS0_SID = bytearray([0x00, 0x00, 0x1f, 0x00])
diff --git a/obsw_tmtc_client.py b/obsw_tmtc_client.py
index b87a27fa7bae48c8e780924c3ffa4abed8a8fff4..b1ef278422b29bb4878d116b1e3ea5e9b2ae8297 100644
--- a/obsw_tmtc_client.py
+++ b/obsw_tmtc_client.py
@@ -59,6 +59,7 @@ import logging
 import sys
 from collections import deque
 
+from OBSW_TcService200 import packModeData
 from test import OBSW_PusServiceTest
 from config import OBSW_Config as g
 from config.OBSW_Config import setGlobals
@@ -111,7 +112,7 @@ def main():
         sender_and_receiver = SingleCommandSenderReceiver(
             comInterface=communication_interface, tmtcPrinter=tmtc_printer, tmListener=tm_listener,
             pusPacketTuple=pus_packet_tuple, tmTimeout=g.tmTimeout,
-            tcTimeoutFactor=g.tcSendTimeoutFactor, doPrintToFile=g.G_PRINT_TO_FILE)
+            tcTimeoutFactor=g.tcSendTimeoutFactor)
         sender_and_receiver.send_single_tc_and_receive_tm()
 
     elif g.modeId == g.ModeList.ServiceTestMode:
@@ -156,10 +157,11 @@ def command_preparation():
     # Direct command which triggers an additional step reply and one completion reply
     # Single Command Testing
     command = PUSTelecommand(service=17, subservice=1, SSC=21)
-    # command.print()
-    # file = bytearray([1, 2, 3, 4, 5])
-    # command = PUSTelecommand(service=23, subservice=1, SSC=21, data=file)
-    # command.packCommandTuple()
+    # Object ID: Dummy Device
+    objectId = g.DUMMY_DEVICE_ID
+    # Set On Mode
+    modeData = packModeData(objectId, 1, 0)
+    command = PUSTelecommand(service=200, subservice=1, SSC=2000, data=modeData)
     return command.packCommandTuple()
 
 
diff --git a/sendreceive/obsw_single_command_sender_receiver.py b/sendreceive/obsw_single_command_sender_receiver.py
index 27be3c18ce50c958fa70e856d60ddff168043a11..8ea94f14008e43598b610c072c5f35ef0d49b7ff 100644
--- a/sendreceive/obsw_single_command_sender_receiver.py
+++ b/sendreceive/obsw_single_command_sender_receiver.py
@@ -22,8 +22,7 @@ class SingleCommandSenderReceiver(CommandSenderReceiver):
     This object can be used by instantiating it and calling sendSingleTcAndReceiveTm()
     """
     def __init__(self, comInterface: ComIF_T, tmtcPrinter: TmTcPrinterT, tmListener: TmListenerT,
-                 pusPacketTuple: tuple, tmTimeout: float, tcTimeoutFactor: float,
-                 doPrintToFile: bool):
+                 pusPacketTuple: tuple, tmTimeout: float, tcTimeoutFactor: float):
         """
         :param comInterface: CommunicationInterface object, passed on to CommandSenderReceiver
         :param tmListener: TmListener object which runs in the background and receives all TM
@@ -35,8 +34,8 @@ class SingleCommandSenderReceiver(CommandSenderReceiver):
         :param doPrintToFile: Specify whether output is also printed to a file
         """
         super().__init__(comInterface=comInterface, tmListener=tmListener, tmtcPrinter=tmtcPrinter,
-                         tmTimeout=tmTimeout, tcSendTimeoutFactor=tcTimeoutFactor,
-                         doPrintToFile=doPrintToFile)
+                         tmTimeout=tmTimeout, tcSendTimeoutFactor=tcTimeoutFactor)
+        self.faulty_input = False
         try:
             self.pus_packet, self.pus_packet_info = pusPacketTuple
         except TypeError:
diff --git a/tc/OBSW_TcService200.py b/tc/OBSW_TcService200.py
index 3abc8e9634485e1df489c6ef34616409594b6194..9ebb0dad3f64b279d27b76eda21f9b005bb4539a 100644
--- a/tc/OBSW_TcService200.py
+++ b/tc/OBSW_TcService200.py
@@ -13,13 +13,14 @@ Run script with -s <Service or Device> -m 3 with optional -p parameter for file
 """
 from tc.OBSW_TcPacket import PUSTelecommand
 from tc.OBSW_TcPacker import tcQueueT
+import config.OBSW_Config as g
 import struct
 
 
 def packService200TestInto(tcQueue: tcQueueT) -> tcQueueT:
     tcQueue.appendleft(("print", "Testing Service 200"))
     # Object ID: Dummy Device
-    objectId = bytearray([0x44, 0x00, 0xAF, 0xFE])
+    objectId = g.DUMMY_DEVICE_ID
     # Set On Mode
     tcQueue.appendleft(("print", "\r\nTesting Service 200: Set Mode On"))
     modeData = packModeData(objectId, 1, 0)