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Quick Start Guide for Stepper Configurations
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Set machine units:
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 You need to decide whether you want the machine to use inches or millimeters
 by default.
 This is done by choosing either the stepper/stepper_inch config or the
 stepper/stepper_mm config.
 The first time you run EMC2, a dialog will prompt you to copy the configuration
 to your home directory.
 You should select 
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yes
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.
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Before going on, you should open the ini file in a text editor.
 The file will be in your home directory under emc2/configs/stepper/stepper_inch.
ini (or stepper_mm.ini if you chose that config).
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Determine the size of a step:
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 EMC2 needs to know how far your machine will move for each step pulse it
 sends to the motors.
 The equation to calculate this is 
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steps * usteps * pitch * ratio
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, where 
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steps
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 is the number of steps per revolution for your motor (usually 200)
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usteps
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 is the number of microsteps your drive is set to.
 This is 2 for half stepping, 4 for quarter stepping, etc.
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pitch
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 is the screw pitch: How many turns does it take to move the table one unit?
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ratio
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 is the drive ratio between the motor and the screw.
 If using a belt or gear drive, use the final drive ratio.
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So, for a standard stepper (200 steps/rev), using Gecko drives (10x microsteppin
g), a 10 pitch screw, and 2:1 belt drive, the formula is:
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200 * 10 * 10 * 2 = 40000 steps/inch
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This needs to be determined independently for each axis.
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Let's set the X axis resolution to 40000 steps/inch.
 Find the [AXIS_0] section of the ini file.
 This contains all of the X-axis specific information.
 Change INPUT_SCALE (yes, input - EMC2 still keeps track of where the motor
 should be) to 40000.
 The other axes would be done the same way (Y = AXIS_1, Z = AXIS_2 ...)
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Set up the parallel port connections:
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 You need to tell EMC2 where you stepper drives are connected to the computer.
 There are two sample confi
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Set up stepgen:
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 Stepgen is the module EMC2 uses to convert the position outputs from the
 trajectory planner to steps for the motor.
 
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