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--- mycnc:constant_velocity_mode_cv [2017/09/09 16:33] – skirillov
+++ mycnc:constant_velocity_mode_cv [2019/01/29 14:24] – skirillov
@@ Line 2: / Line 2: @@
 ===== MyCNC Constant Velocity Mode (CV) =====
-In classic "Exact Stop" mode CNC control Toolpath planner add Acceleration/Deceleration for each g-code command block.
+In classic "Exact Stop" mode CNC control Toolpath planner adds Acceleration/Deceleration for each g-code command block.
-For Constant Velocity (CV) mode Toolpath planner tries to make motion without stops. Figures below demonstrate Speed profile and Toolpath for **Exact Stop** and **CV Mode**.
+For Constant Velocity (CV) mode Toolpath planner tries to make a motion without stops. Figures below demonstrate Speed profile and Toolpath for **Exact Stop** and **CV Mode**.
 {{  mycnc:mycnc-exact-mode-001.png?450 }}
@@ Line 12: / Line 12: @@
 Fig.2  CV Mode Toolpath and Speed profile example.
-In CV Mode Control software Toolpath plabber reduce cutting speed on corners to keep Toolpath tolerance in range given in "CV tolerance" in "Motion" configuration dialog
+In CV Mode Control software Toolpath planner reduces cutting speed on corners to keep Toolpath tolerance in a range given in "CV tolerance" in "Motion" configuration dialog
 {{ mycnc-configuration-motion-001.png?700 }}
-S-curve Speed profile is implemented in myCNC for CV-mode. It makes smooth motion for all axes and significantly reduce machine vibration, step loss and cutting time.
+S-curve Speed profile is implemented in myCNC for CV-mode. It makes a smooth motion for all axes and significantly reduce machine vibration, step loss and cutting time.
+Here is a fixed time interval for S-curve transition from one command to another ("command" can be linear or arc interpolation). The time interval can be set from 5ms to 41ms.
+myCNC has a few settings to tune CV mode.
+{{  mycnc:mycnc-cv-mode-setup-001.png }}
+  * **CV tolerance, units** - Tolerance value
+  * **S-curve Smooth Filtering** -  The Time interval, transition time between two interpolation commands where S-curve smoothing performed.
+  * **Look Ahead Break Angle.** - If an angle between 2 lines more than Break Angle, toolpath planner switches to **Exact Stop** mode - follows the toolpath exactly with deceleration, then acceleration.