stepconf.lyx

CNC 的开放码,EMC2 V2.2.8版

#LyX 1.3 created this file. For more info see http://www.lyx.org/
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\language english
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\quotes_language english
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\layout Chapter

Stepconf Wizard
\begin_inset LatexCommand \label{cha:Stepconf-Wizard}

\end_inset 


\begin_inset LatexCommand \index{Stepconf Wizard}

\end_inset 


\layout Standard

EMC2 is capable of controlling a wide range of machinery using many different
 hardware interfaces.
 Stepconf is a program which generates EMC configuration files for a specific
 class of CNC machine: those connected to the PC using a standard 
\series bold 
parallel port
\series default 
 and controlled with 
\series bold 
step & direction
\series default 
 signals.
 Stepconf is installed when you install EMC2 and is in the CNC menu.
\layout Standard

Stepconf places a file in the emc2/config directory to store the choices
 for each configuration you create.
 When you change something you need to pick the file that matches your configura
tion name.
 The file extension is .stepconf.
\layout Section

Step by Step Instructions
\begin_inset LatexCommand \label{sec:Step-by-Step}

\end_inset 


\layout Subsection

Basic Information
\begin_inset LatexCommand \label{sub:Basic-Information}

\end_inset 


\layout Standard


\begin_inset Float figure
placement H
wide false
collapsed false

\layout Caption

Basic Information Page
\begin_inset LatexCommand \label{cap:Basic-Information-Page}

\end_inset 


\layout Standard
\align center 

\begin_inset Graphics
	filename stepconf-basic.png
	scale 70

\end_inset 


\end_inset 


\layout Description

Machine\SpecialChar ~
Name
\begin_inset LatexCommand \index{Machine Name}

\end_inset 

 Choose a name for your machine.
 Use only uppercase letters, lowercase letters, digits, 
\begin_inset Quotes eld
\end_inset 

-
\begin_inset Quotes erd
\end_inset 

 and 
\begin_inset Quotes eld
\end_inset 

_
\begin_inset Quotes erd
\end_inset 

.
\layout Description

Axis\SpecialChar ~
Configuration
\begin_inset LatexCommand \index{Axis Configuration}

\end_inset 

 Choose XYZ (Mill), XYZA (4-axis mill) or XZ (Lathe).
\layout Description

Machine\SpecialChar ~
Units
\begin_inset LatexCommand \index{Machine Units}

\end_inset 

 Choose Inch or mm.
 All subsequent questions (such as machine travel, leadscrew pitch, etc)
 will be answered in the chosen units
\layout Description

Driver\SpecialChar ~
Type
\begin_inset LatexCommand \index{Driver Type}

\end_inset 

 If you have one of the stepper drivers listed in the pull down box, choose
 it.
 Otherwise, find the 4 timing values in your driver's data sheet and enter
 them.
 If the data sheet gives a value in microseconds, multiply by 1000.
 For example, enter 4.5us as 4500.
 The Gecko type is for the 201 drive.
 A list is on the wiki site of most popular drives with the timing values
 is in the Stepper Drive Timing Page.
\begin_deeper 
\layout Standard

Additional signal conditioning or isolation such as optocouplers and RC
 filters on break out boards can impose timing constraints of their own,
 in addition to those of the driver.
 You may find it necessary to add some time to the drive requirements to
 allow for this.
\end_deeper 
\layout Description

Latency\SpecialChar ~
Test\SpecialChar ~
Result
\begin_inset LatexCommand \index{Latency Test Result}

\end_inset 

 Enter the result of the Latency Test here.
 To run a latency test see section (
\begin_inset LatexCommand \ref{sec:Latency-Test}

\end_inset 

)
\layout Description

Max\SpecialChar ~
Step\SpecialChar ~
Rate
\begin_inset LatexCommand \index{Max Step Rate}

\end_inset 

 Stepconf automatically calculates the Max Step Rate based on the driver
 characteristics entered and the latency test results.
\layout Description

Min\SpecialChar ~
Base\SpecialChar ~
Period
\begin_inset LatexCommand \index{Min Base Period}

\end_inset 

 Stepconf automatically determines the Min Base Period based on the driver
 characteristics entered and latency test result.
\layout Description

Onscreen\SpecialChar ~
Prompt\SpecialChar ~
For\SpecialChar ~
Tool\SpecialChar ~
Change
\begin_inset LatexCommand \index{Onscreen Prompt For Tool Change}

\end_inset 

 If this box is checked, EMC will pause and prompt you to change the tool
 when 
\series bold 
M6
\series default 
 is encountered.
 Leave this box checked unless you plan to add support for an automatic
 tool changer in a custom hal file
\layout Subsection

Parallel Port Setup
\begin_inset LatexCommand \index{Parallel Port Setup}

\end_inset 


\begin_inset LatexCommand \label{sub:Parallel-Port-Setup}

\end_inset 


\layout Standard


\begin_inset Float figure
placement H
wide false
collapsed false

\layout Caption

Parallel Port Setup Page
\begin_inset LatexCommand \label{cap:Parallel-Port-Setup}

\end_inset 


\layout Standard
\align center 

\begin_inset Graphics
	filename stepconf-pinout.png
	scale 70

\end_inset 


\end_inset 


\layout Standard

For each pin, choose the signal which matches your parallel port pin out.
 Turn on the 
\begin_inset Quotes eld
\end_inset 

invert
\begin_inset Quotes erd
\end_inset 

 check box if the signal is inverted (0V for true/active, 5V for false/inactive).
\layout Description

Output\SpecialChar ~
pinout\SpecialChar ~
presets
\begin_inset LatexCommand \index{Output pinout presets}

\end_inset 

 Automatically set pins 2 through 9 according to the Sherline standard (Directio
n on pins 2, 4, 6, 8) or the Xylotex standard (Direction on pins 3, 5, 7,
 9).
\layout Description

Inputs\SpecialChar ~
and\SpecialChar ~
Outputs
\begin_inset LatexCommand \index{Inputs and Outputs}

\end_inset 

 If the input or output is not used set the option to 
\begin_inset Quotes eld
\end_inset 

Unused
\begin_inset Quotes erd
\end_inset 

.
\layout Description

Include\SpecialChar ~
custom\SpecialChar ~
HAL\SpecialChar ~
configuration
\begin_inset LatexCommand \index{Include custom HAL configuration}

\end_inset 

 Allows you to add additional hal customizations in the file 
\family typewriter 
custom.hal
\family default 
 after running Stepconf.
\layout Standard


\series bold 
Include\SpecialChar ~
custom\SpecialChar ~
PyVCP\SpecialChar ~
Panel
\begin_inset LatexCommand \index{Include custom PyVCP Panel}

\end_inset 


\series default 
 If selected, the PyVCP control panel 
\family typewriter 
panel.xml
\family default 
 will be displayed on the right-hand side of the main AXIS window.
 This will not create a PyVCP panel but will create the blank file in the
 config folder.
 To create a PyVCP panel see the PyVCP section of the Integrators Manual.
\layout Standard


\series bold 
Charge Pump
\begin_inset LatexCommand \index{Charge Pump}

\end_inset 

 
\series default 
If your driver board requires a charge pump signal simply select Charge
 Pump from the drop down list for the output pin you wish to connect to
 your charge pump input.
 The charge pump output is connected to the base thread by Stepconf.
 The charge pump output will be about 1/2 of the maximum step rate shown
 on the Basic Machine Configuration page.
\layout Subsection

Axis Configuration
\begin_inset LatexCommand \index{Axis Configuration}

\end_inset 


\begin_inset LatexCommand \label{sub:Axis-Configuration}

\end_inset 


\layout Standard


\begin_inset Float figure
placement H
wide false
collapsed false

\layout Caption

Axis Configuration Page
\begin_inset LatexCommand \label{cap:Axis-Configuration-Page}

\end_inset 


\layout Standard
\align center 

\begin_inset Graphics
	filename stepconf-axis.png
	scale 70

\end_inset 


\end_inset 


\layout Description

Motor\SpecialChar ~
Steps\SpecialChar ~
Per\SpecialChar ~
Revolution
\begin_inset LatexCommand \index{Motor Steps Per Revolution}

\end_inset 

 The number of full steps per motor revolution.
 If you know how many degrees the motor is (e.g., 1.2 degree), then divide
 360 by the degrees to find the number of steps per motor revolution.
\layout Description

Driver\SpecialChar ~
Microstepping
\begin_inset LatexCommand \index{Driver Microstepping}

\end_inset 

 The amount of microstepping performed by the driver.
 Enter 
\begin_inset Quotes eld
\end_inset 

2
\begin_inset Quotes erd
\end_inset 

 for half-stepping.
\layout Description

Pulley\SpecialChar ~
Ratio
\begin_inset LatexCommand \index{Pulley Ratio}

\end_inset 

 If your machine has pulleys between the motor and leadscrew, enter the
 ratio here.
 If not, enter 
\begin_inset Quotes eld
\end_inset 

1:1
\begin_inset Quotes erd
\end_inset 

.
\layout Description

Leadscrew\SpecialChar ~
Pitch
\begin_inset LatexCommand \index{Leadscrew Pitch}

\end_inset 

 Enter the pitch of the leadscrew here.
 If you chose 
\begin_inset Quotes eld
\end_inset 

Inch
\begin_inset Quotes erd
\end_inset 

 units, enter the number of threads per inch here (e.g., enter 8 for 8TPI).
 If you chose 
\begin_inset Quotes eld
\end_inset 

mm
\begin_inset Quotes erd
\end_inset 

 units, enter the number of millimeters per thread here (e.g., enter 2 for
 2mm/rev).
 If the machine travels in the wrong direction, enter a negative number
 here instead of a positive number.
\layout Description

Maximum\SpecialChar ~
Velocity
\begin_inset LatexCommand \index{Maximum Velocity}

\end_inset 

 Enter the maximum velocity for the axis in units per second.
 
\layout Description

Maximum\SpecialChar ~
Acceleration
\begin_inset LatexCommand \index{Maximum Acceleration}

\end_inset 

 The correct values for these items can only be determined through experimentati
on.
 See 
\begin_inset Quotes eld
\end_inset 

Finding Velocity and Acceleration
\begin_inset Quotes erd
\end_inset 

 below.
\layout Description

Home\SpecialChar ~
Location
\begin_inset LatexCommand \index{Home Location}

\end_inset 

 The position the machine moves to after completing the homing procedure
 for this axis.
 For machines without home switches, this is the location the operator manually
 moves the machine to before pressing the Home button.
\layout Description

Table\SpecialChar ~
Travel
\begin_inset LatexCommand \index{Table Travel}

\end_inset 

 The range of travel that gcode programs must not exceed.
 The home location must be inside the Table Travel.
 In particular, having Home Location exactly equal to one of the Table Travel
 values is incorrect configuration
\layout Description

Home\SpecialChar ~
Switch\SpecialChar ~
Location
\begin_inset LatexCommand \index{Home Switch Location}

\end_inset 

 The location at which the home switch trips or releases during the homing
 process.
 This item and the two below only appear when Home Switches were chosen
 in the Parallel Port Pinout.
\layout Description

Home\SpecialChar ~
Search\SpecialChar ~
Velocity
\begin_inset LatexCommand \index{Home Search Velocity}

\end_inset 

 The velocity to use when moving towards the switch.
 If the switch is near the end of travel, this velocity must be chosen so
 that the axis can decelerate to a stop before hitting the end of travel.
 If the switch is only closed for a short range of travel (instead of being
 closed from its trip point to one end of travel), this velocity must be
 chosen so that the axis can decelerate to a stop before the switch opens
 again, and homing must always be started from the same side of the switch.
\newline 
If the machine moves the wrong direction at the beginning of the homing
 procedure, negate the value of 
\series bold 
Home Search Velocity
\series default 
.
\layout Description

Home\SpecialChar ~
Latch\SpecialChar ~
Direction
\begin_inset LatexCommand \index{Home Latch Direction}

\end_inset 

 Choose 
\begin_inset Quotes eld
\end_inset 

Same
\begin_inset Quotes erd
\end_inset 

 to have homing back off the switch, then approach it again at a very low
 speed.