Index: firmware/App/Drivers/GLXferPump.h
===================================================================
diff -u -r3074682de43568567f244e2663d1f75b7e6ea85e -ra4774f170562e33a48238cb3e3137bdd06ac374a
--- firmware/App/Drivers/GLXferPump.h	(.../GLXferPump.h)	(revision 3074682de43568567f244e2663d1f75b7e6ea85e)
+++ firmware/App/Drivers/GLXferPump.h	(.../GLXferPump.h)	(revision a4774f170562e33a48238cb3e3137bdd06ac374a)
@@ -36,6 +36,7 @@
 #define AIR_PUMP_MOTOR_OFF            0.0F            ///< Power level setting (PWM) for H12 air pump to turn pump off.
 #define AIR_PUMP_DUTY_CYCLE_MIN       0.0F            ///< Air pump minimum duty cycle in percentage
 #define AIR_PUMP_DUTY_CYCLE_MAX       100.0F          ///< Air pump maximum duty cycle in percentage
+#define AIR_PUMP_MAX_PWM              250             ///< Air pump maximum PWM, FPGA ignores 251-255
 
 // ********** public function prototypes **********