DSM2 Range Check (half) implemented in model SETUP protocol setting.

Half -- because I don't yet know how to make warning sounds in this 
new code. HELP! :P

... otherwise it's working. I have confirmed that
the range check bit appears on the scope, while watching the DSM2
data stream.

src/model_menus.cpp

@@ -789,13 +789,21 @@ void menuProcModel(uint8_t event)
         }
 #if defined(DSM2) || defined(PXX)
         else if (IS_DSM2_PROTOCOL(protocol) || IS_PXX_PROTOCOL(protocol)) {
-          if (attr && m_posHorz > 0 && IS_DSM2_PROTOCOL(protocol))
-            m_posHorz = 0;
+          if (attr && m_posHorz > 1 && IS_DSM2_PROTOCOL(protocol))
+            m_posHorz = 0; // limit 3 column row to 2 colums for DSM2 protocol (Rx_Num and RANGE fields)
 
           lcd_putsLeft(y, STR_RXNUM);
           lcd_outdezNAtt(MODEL_PARAM_OFS-(IS_DSM2_PROTOCOL(protocol) ? 0 : 3*FW), y, g_model.modelId, ((attr && m_posHorz==0) ? (s_editMode>0 ? BLINK|INVERS : INVERS) : 0) | LEADING0|LEFT, 2);
 
-          if (attr && (IS_DSM2_PROTOCOL(protocol) || (m_posHorz==0 && (s_editMode>0 || p1valdiff))))
+          if (IS_DSM2_PROTOCOL(protocol)) { // RANGE CHECK
+            lcd_putsnAtt(MODEL_PARAM_OFS+4*FW, y, PSTR(" RANGE<range")+6*(s_rangecheck_mode), 6, (m_posHorz==1 ? attr : 0));
+            if (attr && m_posHorz==1 && s_editMode>0)
+              s_rangecheck_mode = true;
+            else
+              s_rangecheck_mode = false;
+          }
+
+          if (attr && (m_posHorz==0 && (s_editMode>0 || p1valdiff)))
             CHECK_INCDEC_MODELVAR(event, g_model.modelId, 0, 99);
 
 #if defined(PXX)

src/pulses_avr.cpp

@@ -419,6 +419,7 @@ normal:
  */
 
 bool s_bind_mode = false;     // Issue 98
+bool s_rangecheck_mode = false;
 uint8_t s_bind_allowed = 255; // Issue 98
 
 FORCEINLINE void setupPulsesDsm2()
@@ -430,7 +431,11 @@ FORCEINLINE void setupPulsesDsm2()
     s_bind_mode = true;
     *ptr++ = BIND_BIT;
   }
-  else 
+  else if (s_rangecheck_mode)
+  {
+    *ptr++ = RANGECHECK_BIT;
+  }
+  else
   {
     s_bind_mode = false;
     *ptr++ = 0x00;