void btnGetPIDData_Click(object sender, EventArgs e)
{
this.btnGetPIDData.Enabled = false;
GrblPIDData.Load();
PIDPlot.Refresh();
btnGetPIDData.Enabled = true;
}
void tbError_ValueChanged(object sender, EventArgs e)
{
this.errorScale = tbError.Value;
PIDPlot.Refresh();
}