SCARA_SEGMENTS_PER_SECOND

Marlin/Marlin_main.cpp

 #endif
 
 #ifdef SCARA
+  float delta_segments_per_second = SCARA_SEGMENTS_PER_SECOND;
   static float delta[3] = { 0 };
   float axis_scaling[3] = { 1, 1, 1 };    // Build size scaling, default to 1
 #endif

Marlin/example_configurations/SCARA/Configuration.h

 // You might need Z-Min endstop on SCARA-Printer to use this feature. Actually untested!
 // Uncomment to use Morgan scara mode
 #define SCARA  
-#define scara_segments_per_second 200 //careful, two much will decrease performance...
+#define SCARA_SEGMENTS_PER_SECOND 200 // If movement is choppy try lowering this value
 // Length of inner support arm
 #define Linkage_1 150 //mm      Preprocessor cannot handle decimal point...
 // Length of outer support arm     Measure arm lengths precisely and enter