Index: firmware/App/Controllers/DialOutFlow.c
===================================================================
diff -u -rd611c5eeaee076a6fbf79cf94f80fff05fd5d9a9 -r187df13234966f412631385a0bb7e76d1d3b69aa
--- firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision d611c5eeaee076a6fbf79cf94f80fff05fd5d9a9)
+++ firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision 187df13234966f412631385a0bb7e76d1d3b69aa)
@@ -152,10 +152,10 @@
 #define STOP_DO_PUMP_GIO_PORT_PIN               6U           ///< GIO port A pin used for pump controller direction pin.
 #define DOP_ROTOR_HALL_SENSOR_NHET_ID           0x0000000E   ///< NHET pin number associated with DPo rotor hall sensor input
 // Dialysate outlet pump stop and direction macros
-#define SET_DOP_STOP()                          {mibspiREG1->PC3 &= ~STOP_DO_PUMP_MIBSPI1_PORT_MASK;}               ///< Macro sets pump controller run/stop signal to stop.
-#define CLR_DOP_STOP()                          {mibspiREG1->PC3 |= STOP_DO_PUMP_MIBSPI1_PORT_MASK;}                ///< Macro sets pump controller run/stop signal to run.
-#define SET_DOP_DIR()                           gioSetBit( gioPORTA, STOP_DO_PUMP_GIO_PORT_PIN, PIN_SIGNAL_HIGH )   ///< Macro sets pump controller direction to forward direction.
-#define CLR_DOP_DIR()                           gioSetBit( gioPORTA, STOP_DO_PUMP_GIO_PORT_PIN, PIN_SIGNAL_LOW )    ///< Macro sets pump controller direction to reverse direction.
+#define SET_DOP_STOP()                          {mibspiREG1->PC3 &= ~STOP_DO_PUMP_MIBSPI1_PORT_MASK;}               ///< Macro sets pump controller disable signal low (active low).
+#define CLR_DOP_STOP()                          {mibspiREG1->PC3 |= STOP_DO_PUMP_MIBSPI1_PORT_MASK;}                ///< Macro sets pump controller disable signal high (active low).
+#define SET_DOP_DIR()                           gioSetBit( gioPORTA, STOP_DO_PUMP_GIO_PORT_PIN, PIN_SIGNAL_HIGH )   ///< Macro sets pump controller direction to high (forward direction).
+#define CLR_DOP_DIR()                           gioSetBit( gioPORTA, STOP_DO_PUMP_GIO_PORT_PIN, PIN_SIGNAL_LOW )    ///< Macro sets pump controller direction to low (reverse direction).
 
 // ********** private data **********