When a coil tails out on an Open Loop controller, the encoder count is supposed to be reset to zero. When the new coil is loaded the controller resets the encoder count to minus the Shear to Encoder Distance.

This was an intermittent issue related to DSP communication. The Tail Out told the DSP to set the encoder count to zero and then executed code to Unload the Queue. The Unload Queue code executed code that told the DSP to Decrement the encoder count. The DSP timer did not run until after the Decrement was requested. The Decrement request overwrote the Set request which resulted in a bad encoder count value.

This bug is purely a display issue. No material gets miss-reported. Everything gets resolved when the next Coil is threaded.