tkemc.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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\layout Chapter

TkEMC
\layout Section

Introduction
\layout Standard

TkEMC
\begin_inset LatexCommand \index{tkemc}

\end_inset 

 is one of the most traditional graphical front-ends for EMC.
 It is written in Tcl
\begin_inset LatexCommand \index{Tcl}

\end_inset 

 and uses the Tk
\begin_inset LatexCommand \index{Tk}

\end_inset 

 toolkit for the display.
 Being written in TCL makes it very portable (runs on a multitude of platforms).
 A separate backplot window can be displayed as shown in Figure(
\begin_inset LatexCommand \ref{cap:TkEMC-Window}

\end_inset 

).
\layout Standard


\begin_inset Float figure
wide false
collapsed false

\layout Caption

TkEMC Window
\begin_inset LatexCommand \label{cap:TkEMC-Window}

\end_inset 


\layout Standard
\align center 

\begin_inset Graphics
	filename ../common/tkemc.png
	lyxscale 80
	width 80page%

\end_inset 


\end_inset 


\layout Section

Getting Started
\layout Standard

To select TkEMC as the front-end for EMC2, edit the .ini file.
 In the section 
\family typewriter 
[DISPLAY]
\family default 
 change the 
\family typewriter 
DISPLAY
\family default 
 line to read
\layout LyX-Code

DISPLAY = tkemc
\layout Standard

Then, start EMC2 and select that ini file.
 The sample configuration 
\family typewriter 
sim/tkemc.ini
\family default 
 is already configured to use TkEMC as its front-end.
\layout Standard

When you start EMC2 with TkEMC, a window like the one in Figure 
\begin_inset LatexCommand \ref{cap:TkEMC-Window}

\end_inset 

 is shown.
\layout Subsection

A typical session with TkEMC
\layout Enumerate

Start EMC and select a configuration file.
\layout Enumerate

Clear the 
\begin_inset Quotes eld
\end_inset 

E-STOP
\begin_inset LatexCommand \index{ESTOP}

\end_inset 


\begin_inset Quotes erd
\end_inset 

 condition and turn the machine on (by pressing F1 then F2).
\layout Enumerate


\begin_inset Quotes eld
\end_inset 

Home
\begin_inset LatexCommand \index{home}

\end_inset 


\begin_inset Quotes erd
\end_inset 

 each axis.
\layout Enumerate

Load the file to be milled.
\layout Enumerate

Put the stock to be milled on the table.
\layout Enumerate

Set the proper offsets for each axis by jogging and either homing again
 or right-clicking an axis name and entering an offset value.
\layout Enumerate

Run the program.
\layout Enumerate

To mill the same file again, return to step 6.
 To mill a different file, return to step 4.
 When you're done, exit EMC2.
\layout Section

Elements of the TkEMC window
\layout Standard

The TkEMC window contains the following elements:
\layout Itemize

A menubar that allows you to perform various actions ;
\layout Itemize

A set of buttons that allow you to change the current working mode, start/stop
 spindle and other relevant I/O ;
\layout Itemize

Status bar for various offset related displays ;
\layout Itemize

Coordinate display area ;
\layout Itemize

A set of sliders which control 
\begin_inset Quotes eld
\end_inset 

Jogging speed
\begin_inset LatexCommand \index{jog speed}

\end_inset 


\begin_inset Quotes erd
\end_inset 

, 
\begin_inset Quotes eld
\end_inset 

Feed Override
\begin_inset LatexCommand \index{feed override}

\end_inset 


\begin_inset Quotes erd
\end_inset 

, and 
\begin_inset Quotes eld
\end_inset 

Spindle speed Override
\begin_inset LatexCommand \index{spindle speed override}

\end_inset 


\begin_inset Quotes erd
\end_inset 

 which allow you to increase or decrease those settings ;
\layout Itemize

Manual data input text box 
\begin_inset LatexCommand \index{MDI}

\end_inset 

; 
\layout Itemize

Status bar display with active G-codes, M-codes, F- and S-words ;
\layout Itemize

Interpreter related buttons ;
\layout Itemize

A text display area that shows the G-code source of the loaded file.
\layout Subsection

Main buttons
\layout Standard

From left to right, the buttons are:
\layout Enumerate

Machine enable: 
\begin_inset Quotes eld
\end_inset 

ESTOP
\begin_inset LatexCommand \index{ESTOP}

\end_inset 


\begin_inset Quotes erd
\end_inset 

 / 
\begin_inset Quotes eld
\end_inset 

ESTOP RESET
\begin_inset Quotes erd
\end_inset 

 / 
\begin_inset Quotes eld
\end_inset 

ON
\begin_inset Quotes erd
\end_inset 

 
\layout Enumerate

Toggle mist
\begin_inset LatexCommand \index{MIST}

\end_inset 


\layout Enumerate

Decrease spindle speed
\layout Enumerate

Set spindle
\begin_inset LatexCommand \index{spindle}

\end_inset 

 direction 
\begin_inset Quotes eld
\end_inset 

SPINDLE OFF
\begin_inset Quotes erd
\end_inset 

 / 
\begin_inset Quotes eld
\end_inset 

SPINDLE FORWARD
\begin_inset Quotes erd
\end_inset 

 / 
\begin_inset Quotes eld
\end_inset 

SPINDLE REVERSE
\begin_inset Quotes erd
\end_inset 


\layout Enumerate

Increase spindle speed
\layout Enumerate

Abort
\layout Standard

then on the second line:
\layout Enumerate

Operation mode: 
\begin_inset Quotes eld
\end_inset 

MANUAL
\begin_inset LatexCommand \index{Manual}

\end_inset 


\begin_inset Quotes erd
\end_inset 

 / 
\begin_inset Quotes eld
\end_inset 

MDI
\begin_inset LatexCommand \index{MDI}

\end_inset 


\begin_inset Quotes erd
\end_inset 

 / 
\begin_inset Quotes eld
\end_inset 

AUTO
\begin_inset LatexCommand \index{Auto}

\end_inset 


\begin_inset Quotes erd
\end_inset 


\layout Enumerate

Toggle flood
\layout Enumerate

Toggle spindle brake control
\layout Subsection

Offset display status bar
\layout Standard

The Offset display status bar displays the currently selected tool (selected
 with Txx M6), the tool length offset (if active), and the work offsets
 (set by right clicking the coordinates).
\layout Subsection

Coordinate Display Area
\layout Standard

The main part of the display shows the current position of the tool.
 The colour of the position readout depends on the state of the axis.
 If the axis is unhomed the axis will be displayed in yellow letters.
 Once homed it will be displayed in green letters.
 If there is an error with the current axis TkEMC will use red letter to
 show that.
 (for example if an hardware limit switch is tripped).
\layout Standard

To properly interpret these numbers, refer to the radio boxes on the right.
 If the position is 
\begin_inset Quotes eld
\end_inset 

Machine
\begin_inset Quotes erd
\end_inset 

, then the displayed number is in the machine coordinate system.
 If it is 
\begin_inset Quotes eld
\end_inset 

Relative
\begin_inset Quotes erd
\end_inset 

, then the displayed number is in the offset coordinate system.
 Further down the choices can be 
\begin_inset Quotes eld
\end_inset 

actual
\begin_inset Quotes erd
\end_inset 

 or 
\begin_inset Quotes eld
\end_inset 

commanded
\begin_inset Quotes erd
\end_inset 

.
 Actual refers to the feedback coming from encoders (if you have a servo
 machine), and the 
\begin_inset Quotes eld
\end_inset 

commanded
\begin_inset Quotes erd
\end_inset 

 refers to the position command send out to the motors.
 These values can differ for several reasons: Following error, deadband,
 encoder resolution, or step size.
 For instance, if you command a movement to X 0.0033 on your mill, but one
 step of your stepper motor is 0.00125, then the 
\begin_inset Quotes eld
\end_inset 

Commanded
\begin_inset Quotes erd
\end_inset 

 position will be 0.0033 but the 
\begin_inset Quotes eld
\end_inset 

Actual
\begin_inset Quotes erd
\end_inset 

 position will be 0.0025 (2 steps) or 0.00375 (3 steps).
\layout Standard

Another set of radio buttons allows you to choose between 
\begin_inset Quotes eld
\end_inset 

joint
\begin_inset Quotes erd
\end_inset 

 and 
\begin_inset Quotes eld
\end_inset 

world
\begin_inset Quotes erd
\end_inset 

 view.
 These make little sense on a normal type of machine (e.g.
 trivial kinematics), but helps on machines with non-trivial kinematics
 like robots or stewart platforms.
 (you can read more about kinematics in the Integrators Handbook).
\layout Subsubsection

Backplot
\layout Standard

When the machine moves, it leaves a trail called the backplot.
 You can start the backplot window by selecting View->Backplot.
\layout Subsection

Automatic control
\layout Standard


\begin_inset Float figure
wide false
collapsed false

\layout Caption

TkEMC Interpreter / program control
\begin_inset LatexCommand \label{cap:TkEMC-Interpreter}

\end_inset 


\layout Standard
\align center 

\begin_inset Graphics
	filename tkemc_interp.png
	scale 80

\end_inset 


\end_inset 


\layout Subsubsection

Buttons for control
\layout Standard

The buttons in the lower part of TkEMC (seen in Figure 
\begin_inset LatexCommand \ref{cap:TkEMC-Interpreter}

\end_inset 

) are used to control the execution of a program: 
\begin_inset Quotes eld
\end_inset 

Open
\begin_inset LatexCommand \index{open}

\end_inset 


\begin_inset Quotes erd
\end_inset 

 to load a program, 
\begin_inset Quotes eld
\end_inset 

Verify
\begin_inset LatexCommand \index{verify}

\end_inset 


\begin_inset Quotes erd
\end_inset 

 to check it for errors, 
\begin_inset Quotes eld
\end_inset 

Run
\begin_inset LatexCommand \index{run}

\end_inset 


\begin_inset Quotes erd
\end_inset 

 to start the actual cutting, 
\begin_inset Quotes eld
\end_inset 

Pause
\begin_inset LatexCommand \index{pause}

\end_inset 


\begin_inset Quotes erd
\end_inset 

 to stop it while running, 
\begin_inset Quotes eld
\end_inset 

Resume
\begin_inset LatexCommand \index{resume}

\end_inset 


\begin_inset Quotes erd
\end_inset