Index: firmware/App/Services/Reservoirs.h
===================================================================
diff -u -r92a0a399021a2d120155b0a779855893284b8cbb -rd6b09c549d14f5f7fe08484bf0e882cadf2a892b
--- firmware/App/Services/Reservoirs.h	(.../Reservoirs.h)	(revision 92a0a399021a2d120155b0a779855893284b8cbb)
+++ firmware/App/Services/Reservoirs.h	(.../Reservoirs.h)	(revision d6b09c549d14f5f7fe08484bf0e882cadf2a892b)
@@ -46,9 +46,10 @@
 /// Drain command data structure.
 typedef struct
 {
-    U32 targetVolume;           ///< Target volume to drain to (in mL)
-    BOOL tareLoadCell;          ///< Flag to tare load call
-    BOOL rinseConcentrateLines; ///< Flag indicates to rinse concentrate lines or not
+    U32 targetVolume;               ///< Target volume to drain to (in mL)
+    BOOL tareLoadCell;              ///< Flag to tare load call
+    BOOL rinseConcentrateLines;     ///< Flag indicates to rinse concentrate lines or not
+    U32 cmd;                        ///< General command (start/stop)
 } DRAIN_CMD_T;
 
 /// DG command response data record.