diff --git a/pus_tc/cmd_definitions.py b/pus_tc/cmd_definitions.py
index 5ecb282..575ed43 100644
--- a/pus_tc/cmd_definitions.py
+++ b/pus_tc/cmd_definitions.py
@@ -1,3 +1,4 @@
+from common_tmtc.pus_tc.service_20_parameters import add_param_cmds
 from tmtccmd.config import (
     TmTcDefWrapper,
 )
@@ -18,5 +19,6 @@ def common_fsfw_service_op_code_dict() -> TmTcDefWrapper:
     )
 
     add_tc_sched_cmds(def_wrapper)
+    add_param_cmds(def_wrapper)
 
     return def_wrapper
diff --git a/pus_tc/service_20_parameters.py b/pus_tc/service_20_parameters.py
index 9f3dac8..bb3a277 100644
--- a/pus_tc/service_20_parameters.py
+++ b/pus_tc/service_20_parameters.py
@@ -1,7 +1,9 @@
 import struct
 
 from spacepackets.ecss.tc import PusTelecommand
+from spacepackets.ecss import PusServices
 
+from tmtccmd.config import TmTcDefWrapper, OpCodeEntry
 from tmtccmd.tc import QueueHelper
 from tmtccmd.tc.pus_20_params import pack_type_and_matrix_data, pack_parameter_id
 from tmtccmd.tc.pus_200_fsfw_modes import pack_mode_data, Modes
@@ -12,6 +14,16 @@ from common_tmtc.config.object_ids import TEST_DEVICE_0_ID
 LOGGER = get_console_logger()
 
 
+def add_param_cmds(defs: TmTcDefWrapper):
+    op_code_entry = OpCodeEntry()
+    op_code_entry.add(keys=["0", "test"], info="Generic Test")
+    defs.add_service(
+        name=str(PusServices.S20_PARAMETER.value),
+        info="Service 20 Parameters",
+        op_code_entry=op_code_entry
+    )
+
+
 def pack_service20_commands_into(q: QueueHelper, op_code: str):
     if op_code == "0":
         pack_service20_test_into(q=q)
@@ -22,6 +34,10 @@ def pack_service20_test_into(q: QueueHelper, called_externally: bool = False):
         q.add_log_cmd("Testing Service 20")
     object_id = TEST_DEVICE_0_ID
 
+    # set mode on
+    q.add_log_cmd("Testing Service 20: Set Mode On")
+    mode_data = pack_mode_data(object_id, Modes.ON, 0)
+    q.add_pus_tc(PusTelecommand(service=200, subservice=1, app_data=mode_data))
     # set mode normal
     q.add_log_cmd("Testing Service 20: Set Normal Mode")
     mode_data = pack_mode_data(object_id, Modes.NORMAL, 0)