diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09c3dbf..11c6900 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Development Build: equuleus-rc1+dev57
+- more complete definition of READ_UPLINK
+- See <https://github.com/nasa/ci_lab/pull/174>
+
 ## Development Build: equuleus-rc1+dev51
 - Support scheduled uplink check
 - updating ci_lab to use new versioning system
diff --git a/config/default_ci_lab_msgstruct.h b/config/default_ci_lab_msgstruct.h
index 9680039..8c874a9 100644
--- a/config/default_ci_lab_msgstruct.h
+++ b/config/default_ci_lab_msgstruct.h
@@ -63,6 +63,11 @@ typedef struct
     CFE_MSG_CommandHeader_t CommandHeader;
 } CI_LAB_SendHkCmd_t;
 
+typedef struct
+{
+    CFE_MSG_CommandHeader_t CommandHeader;
+} CI_LAB_ReadUplinkCmd_t;
+
 typedef struct
 {
     CFE_MSG_TelemetryHeader_t TelemetryHeader;
diff --git a/eds/ci_lab.xml b/eds/ci_lab.xml
index 52c4d80..2fbc822 100644
--- a/eds/ci_lab.xml
+++ b/eds/ci_lab.xml
@@ -45,6 +45,9 @@
       <ContainerDataType name="SendHkCmd" baseType="CFE_HDR/CommandHeader">
       </ContainerDataType>
 
+      <ContainerDataType name="ReadUplinkCmd" baseType="CFE_HDR/CommandHeader">
+      </ContainerDataType>
+
       <ContainerDataType name="CommandBase" baseType="CFE_HDR/CommandHeader">
       </ContainerDataType>
 
@@ -78,27 +81,34 @@
             </GenericTypeMapSet>
           </Interface>
           <Interface name="SEND_HK" shortDescription="Send telemetry command interface" type="CFE_SB/Telecommand">
-            <!-- This uses a bare spacepacket with no payload -->
             <GenericTypeMapSet>
               <GenericTypeMap name="TelecommandDataType" type="SendHkCmd" />
             </GenericTypeMapSet>
           </Interface>
+          <Interface name="READ_UPLINK" shortDescription="Read Uplink interface" type="CFE_SB/Telecommand">
+            <GenericTypeMapSet>
+              <GenericTypeMap name="TelecommandDataType" type="ReadUplinkCmd" />
+            </GenericTypeMapSet>
+          </Interface>
           <Interface name="HK_TLM" shortDescription="Software bus housekeeping telemetry interface" type="CFE_SB/Telemetry">
             <GenericTypeMapSet>
               <GenericTypeMap name="TelemetryDataType" type="HkTlm" />
             </GenericTypeMapSet>
           </Interface>
+
         </RequiredInterfaceSet>
         <Implementation>
           <VariableSet>
             <Variable type="BASE_TYPES/uint16" readOnly="true" name="CmdTopicId" initialValue="${CFE_MISSION/CI_LAB_CMD_TOPICID}" />
             <Variable type="BASE_TYPES/uint16" readOnly="true" name="SendHkTopicId" initialValue="${CFE_MISSION/CI_LAB_SEND_HK_TOPICID}" />
+            <Variable type="BASE_TYPES/uint16" readOnly="true" name="ReadUplinkTopicId" initialValue="${CFE_MISSION/CI_LAB_READ_UPLINK_TOPICID}" />
             <Variable type="BASE_TYPES/uint16" readOnly="true" name="HkTlmTopicId" initialValue="${CFE_MISSION/CI_LAB_HK_TLM_TOPICID}" />
           </VariableSet>
           <!-- Assign fixed numbers to the "TopicId" parameter of each interface -->
           <ParameterMapSet>
             <ParameterMap interface="CMD" parameter="TopicId" variableRef="CmdTopicId" />
             <ParameterMap interface="SEND_HK" parameter="TopicId" variableRef="SendHkTopicId" />
+            <ParameterMap interface="READ_UPLINK" parameter="TopicId" variableRef="ReadUplinkTopicId" />
             <ParameterMap interface="HK_TLM" parameter="TopicId" variableRef="HkTlmTopicId" />
           </ParameterMapSet>
         </Implementation>
diff --git a/fsw/src/ci_lab_cmds.c b/fsw/src/ci_lab_cmds.c
index 2a02fe8..e19d9fc 100644
--- a/fsw/src/ci_lab_cmds.c
+++ b/fsw/src/ci_lab_cmds.c
@@ -75,3 +75,11 @@ CFE_Status_t CI_LAB_SendHkCmd(const CI_LAB_SendHkCmd_t *cmd)
     CFE_SB_TransmitMsg(CFE_MSG_PTR(CI_LAB_Global.HkTlm.TelemetryHeader), true);
     return CFE_SUCCESS;
 }
+
+CFE_Status_t CI_LAB_ReadUplinkCmd(const CI_LAB_ReadUplinkCmd_t *cmd)
+{
+    /* Any occurrence of this request will cause CI to read ONLY on this request thereafter */
+    CI_LAB_Global.Scheduled = true;
+    CI_LAB_ReadUpLink();
+    return CFE_SUCCESS;
+}
\ No newline at end of file
diff --git a/fsw/src/ci_lab_cmds.h b/fsw/src/ci_lab_cmds.h
index b399ee4..a26ff76 100644
--- a/fsw/src/ci_lab_cmds.h
+++ b/fsw/src/ci_lab_cmds.h
@@ -59,4 +59,19 @@ CFE_Status_t CI_LAB_ResetCountersCmd(const CI_LAB_ResetCountersCmd_t *cmd);
  */
 CFE_Status_t CI_LAB_SendHkCmd(const CI_LAB_SendHkCmd_t *cmd);
 
+/**
+ * @brief Read Uplink command packets
+ *
+ * This allows servicing of the CI_LAB uplink to be scheduled in a designated timeslot.
+ *
+ * For backward compatibility, CI_LAB will service the uplink periodically by default,
+ * using a local timeout.  However, if this message is sent by the system scheduler,
+ * CI_LAB will stop servicing based on the timeout and ONLY based on that command.
+ *
+ * @param cmd Input message pointer
+ * @returns CFE Status code
+ * @retval #CFE_SUCCESS on successful processing
+ */
+CFE_Status_t CI_LAB_ReadUplinkCmd(const CI_LAB_ReadUplinkCmd_t *cmd);
+
 #endif
diff --git a/fsw/src/ci_lab_dispatch.c b/fsw/src/ci_lab_dispatch.c
index 174b00c..6cd94a0 100644
--- a/fsw/src/ci_lab_dispatch.c
+++ b/fsw/src/ci_lab_dispatch.c
@@ -123,8 +123,7 @@ void CI_LAB_TaskPipe(const CFE_SB_Buffer_t *SBBufPtr)
             break;
 
         case CI_LAB_READ_UPLINK_MID:
-            CI_LAB_Global.Scheduled = true;
-            CI_LAB_ReadUpLink();
+            CI_LAB_ReadUplinkCmd((const CI_LAB_ReadUplinkCmd_t *)SBBufPtr);
             break;
 
         default:
diff --git a/fsw/src/ci_lab_eds_dispatch.c b/fsw/src/ci_lab_eds_dispatch.c
index fbe7383..18c0d67 100644
--- a/fsw/src/ci_lab_eds_dispatch.c
+++ b/fsw/src/ci_lab_eds_dispatch.c
@@ -40,14 +40,24 @@
 /*
  * Define a lookup table for CI lab command codes
  */
-static const CI_LAB_Application_Component_Telecommand_DispatchTable_t CI_LAB_TC_DISPATCH_TABLE = {
+/* clang-format off */
+static const CI_LAB_Application_Component_Telecommand_DispatchTable_t CI_LAB_TC_DISPATCH_TABLE =
+{
     .CMD =
-        {
-            .NoopCmd_indication          = CI_LAB_NoopCmd,
-            .ResetCountersCmd_indication = CI_LAB_ResetCountersCmd,
-
-        },
-    .SEND_HK = {.indication = CI_LAB_SendHkCmd}};
+    {
+        .NoopCmd_indication          = CI_LAB_NoopCmd,
+        .ResetCountersCmd_indication = CI_LAB_ResetCountersCmd,
+    },
+    .SEND_HK =
+    {
+        .indication = CI_LAB_SendHkCmd
+    },
+    .READ_UPLINK =
+    {
+        .indication = CI_LAB_ReadUplinkCmd
+    }
+};
+/* clang-format on */
 
 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **/
 /*  Name:  CI_LAB_TaskPipe                                        */
diff --git a/fsw/src/ci_lab_version.h b/fsw/src/ci_lab_version.h
index 0836192..9f9c1bf 100644
--- a/fsw/src/ci_lab_version.h
+++ b/fsw/src/ci_lab_version.h
@@ -25,7 +25,7 @@
 
 /* Development Build Macro Definitions */
 
-#define CI_LAB_BUILD_NUMBER     51 /*!< Development Build: Number of commits since baseline */
+#define CI_LAB_BUILD_NUMBER     57 /*!< Development Build: Number of commits since baseline */
 #define CI_LAB_BUILD_BASELINE   "equuleus-rc1" /*!< Development Build: git tag that is the base for the current development */
 #define CI_LAB_BUILD_DEV_CYCLE 	"equuleus-rc2" /**< @brief Development: Release name for current development cycle */
 #define CI_LAB_BUILD_CODENAME   "Equuleus" /**< @brief: Development: Code name for the current build */