MP/EMP Post Debugger
User’s Guide
Mastercam X3
MP-EMP Post
Debugger User’s
Guide
[Preliminary Review Version]
July 2008
ii • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
Mastercam® MP-EMP Post Debugger User’s Guide
Date: July 2008
Copyright © 2008 CNC Software, Inc. — All rights reserved.
Software: Mastercam X3
ISBN: 1-883310-86-5
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Contents
1. The Post Debugger Interface ......................................... 1
2. Using the Post Debugger.................................................. 7
vii
X The Main Window................................................................ 2
The Menu Bar......................................................................... 4
The Toolbar............................................................................ 5
Keyboard Shortcuts................................................................ 6
X Enabling the Debugger ......................................................... 8
X Running the Debugger........................................................ 11
X Running a Post.................................................................... 13
X Tracing through a Post....................................................... 14
X Using Breakpoints .............................................................. 18
X Watching Variables ............................................................ 21
3. The Debugger Windows................................................. 25
X The PST Output Window ................................................... 26
X The NCI Output Window.................................................... 27
X The NC Output Window..................................................... 28
X The Error Output Window.................................................. 30
X The Watches Window ....................................................... 31
X The Stack History Window................................................ 32
X The Post Lists Window...................................................... 33
viii • Mastercam X3 / MP-EMP Post Debugger User’s Guide
chapter 1
The Post Debugger Interface
This chapter covers the following topics:
The Main Window . . . . . . . . . . . . . . . . . . . . . . . page 2
The Menu Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4
The Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5
Keyboard Shortcuts . . . . . . . . . . . . . . . . . . . . . . page 6
Mastercam’s MP/EMP Post Debugger helps you find and
correct errors in your posts. Using the debugger, you can step
through the posting process a line at a time, while watching the
post produce the NC code. As you manipulate the posting
process, you can watch how variables change value and view a
stack trace of the post execution. In this chapter, you explore
the MP/EMP Post Debugger’s interface.
2 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
The Main Window
The MP/EMP Post Debugger’s main window hosts a menu bar and
toolbar, as well as the debugger windows.
Figure 1-1: The Post Debugger’s main window
THE POST DEBUGGER INTERFACE / The Main Window • 3
The PST Output, NCI Output, NC Output, and Error Output debugger
windows are housed within the main window, and although they can
be sized and positioned individually, they cannot be dragged outside
of the main window.
The Stack History, Watches, and Post Lists windows, however, can be
moved to any convenient location on your screen (Figure 1-2) or even
to a second monitor.
Figure 1-2: Arranging the debugger ’s windows
1
4 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
The Menu Bar
The Post Debugger’s menu bar contains the commands you need to
work with the debugger. Table 1 describes each command.
Table 1: The menu bar commands
Menu Command Description
File Quit Terminates the current session, but
Exit Terminates the current session, and
Edit Find Searches for occurrences of a given
Find Again Searches for the next occurrence of
Debug Run Runs quickly through the post,
Run Step Runs through the post, while
Break Pauses the debugger’s processing
Stop Stops the debugger’s processing
Step Into Enters the currently highlighted
Step Over Executes all of the commands that
Step Statement Moves forward through the post one
Toggle
Breakpoint
Add Watch Adds the currently highlighted
Configuration Displays the Configuration dialog
View Wat ch Turns the Watches window on or off
Stack Turns the Stack History window on
Post Lists Turns the Post Lists window on or
leaves the debugger open
closes the debugger
text string
the previously searched text string
without building a stack history
building the stack history (much
slower than the Run command)
post block, or, if not on a post block,
executes the current line
are part of the highlighted post
block, or, if not on a post block,
executes the current line
statement at a time
Adds or removes a breakpoint from
the currently selected line
variable to the Watches window
box
or off
off
THE POST DEBUGGER INTERFACE / The Main Window • 5
Table 1: The menu bar commands (Continued)
Menu Command Description
Window Cascade Positions the PST Output, NCI
Output, NC Output, and Error
Output windows so that they
diagonally overlap
Horizontal Positions the PST Output, NCI
Output, NC Output, and Error
Output windows horizontally
Vertical Vertically stacks the PST Output,
NCI Output, NC Output, and Error
Output windows
[Window List] Activates the window selected in the
list
Help PDF Displays this document
About Displays the About dialog box
The Toolbar
The toolbar (Figure 1-3) contains a subset of the commands in the
menu bar. Table 2 describes each command.
Figure 1-3: The Post Debugger’s toolbar
1
Table 2: The toolbar commands
Command Description
Run Runs quickly through the post, without
building a stack history
Pause Pauses the debugger’s processing
Stop Stops the debugger’s processing
6 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
Table 2: The toolbar commands (Continued)
Command Description
Step Into Enters the currently highlighted post block,
Step Over Executes all of the commands that are part of
Step Statement Moves forward through the post one
Run Step Runs through the post, while building the
Break Point Adds or removes a breakpoint from the
Add Watch Adds the currently highlighted variable to
Find Searches for occurrences of a given text
Find Next Searches for the next occurrence of the
or, if not on a post block, executes the
current line
the highlighted post block, or, if not on a
post block, executes the current line
statement at a time
stack history (much slower than the Run
command)
currently selected line
the Watches window
string
previously searched text string
Keyboard Shortcuts
For many of the debugger’s commands, you can use the keyboard
shortcuts shown in Table 1-3.
Table 3: Keyboard shortcuts
Command Keystroke
Add Watch Ctrl+W
Break F12
Run F5
Find Ctrl+F
Find Next F3
Select All Ctrl+A
Step Into F11
Step Over F10
Step Statement Ctrl+F11
Stop Shift+F5
Toggle Breakpoint F9
chapter 2
Using the Post Debugger
In this chapter, you will learn about:
Enabling the Debugger . . . . . . . . . . . . . . . . . . . page 8
Running the Debugger . . . . . . . . . . . . . . . . . . page 11
Running a Post . . . . . . . . . . . . . . . . . . . . . . . . . page 13
Tracing through a Post. . . . . . . . . . . . . . . . . . . page 14
Using Breakpoints . . . . . . . . . . . . . . . . . . . . . . page 18
Watchin g Variables . . . . . . . . . . . . . . . . . . . . . . page 21
The MP/EMP Post Debugger intercepts Mastercam’s posting
process, letting you take control and analyze, step by step,
what’s happening as the post processor reads your part’s NCI
file and outputs the NC code. In this chapter, you learn how to
start the debugger, as well as explore ways to use the debugger
to find errors in your posts.
8 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
Enabling the Debugger
Before you can access the debugger, you must activate it in
Mastercam.
X To Enable the debugger
1 On your Windows Start menu, choose All Programs.
USING THE POST DEBUGGER / Enabling the Debugger • 9
2 In the Mastercam X3 folder, choose MCAMX Control Panel
Applet.
3 In the Mastercam X Utility window, select Enable Post
Debugger.
2
10 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
After you have activated the debugger, its button appears in the Post
processing dialog box:
USING THE POST DEBUGGER / Running the Debugger • 11
Running the Debugger
The following procedure describes how to run the Post Debugger.
X To run the MP/EMP Post Debugger
1 In Mastercam, open a part that contains toolpaths.
2 In the Operations Manager, click the Post selected
operations button.
3 In the Post Processing dialog, select the NC file check box.
2
4 Click the Debugger button. The debugger intercepts
Mastercam’s post processing and displays its main window.
12 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
5 Use the Debug menu (or the toolbar) commands to control
and watch the posting process.
Running a Post
USING THE POST DEBUGGER / Running a Post • 13
How you use the debugger depends on what you are looking for in
your post. As you use the debugger, you will discover different ways to
find the information you need. To get you started, the following
sections describe some basic ways to use the debugger.
The simplest way to use the debugger is to click the Run button, which
causes the debugger to run the post at its fastest speed, populating the
various debugger windows with output. When the post finishes, you
can examine the contents of the windows, which provide a convenient
way to view the following files:
The NCI file that Mastercam generated for your part’s
operations—Mastercam generates this file before the
debugger takes control of the posting process.
The PST instructions that processed the NCI file into the NC
file—The code in the PST file, which was probably supplied by
your Mastercam Reseller, is specific to the machine that will
cut the part.
The NC file, which is the final code that cuts your part—
Mastercam creates this file by interpreting the NCI file as
directed by the PST file.
After running a post, you can also see errors that occurred. Such errors
provide clues to what may be wrong with a malfunctioning post. You
may be able to resolve post issues with the error information alone.
2
14 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
Tracing through a Post
Instead of just running the post and examining the output, you will
often want to trace through a post step by step. When you do this, as
each instruction executes, you see the resulting output (if any). During
tracing, you can also verify the post’s logic, which is the path that the
debugger takes through the post.
When it comes to tracing a post, you have many options. The following
procedures describe some common ways to trace.
X To trace with Step Into
The debugger’s Step Into command lets you watch the post execute
one line at a time. Each time you click Step Into, the debugger
executes a line and updates its window to show the results. The
debugger then waits for you to issue another command. This
procedure demonstrates Step Into tracing.
1 Start the debugger. The debugger’s NCI Output and PST
Output windows display the intermediate NCI instructions
and the PST file, respectively. The current PST line displays in
bold.
USING THE POST DEBUGGER / Tracing through a Post • 15
2 Click the Step Into button. The debugger moves to the first
code line inside of the current post block.
3 Click Step Into again. If the current line is an instruction, the
debugger executes the instruction and moves to the next line,
as shown in the following figure. If the current line calls a post
block or function, the debugger jumps to that post block or
function (thus the name Step Into).
2
16 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
4 Keep pressing Step Into to trace deeper and deeper into the
post, watching to see that the instructions execute in the order
that you expect.
X To trace with Run Step
The Run Step command Lets you watch the post processing as it
happens, without your having to continually click a button.
1 Start the debugger. The debugger’s NCI Output and PST
Output windows display the intermediate NCI instructions
and the PST file, respectively. The current PST line displays in
bold.
2 Click the Run Step button. The debugger starts executing the
post, displaying the process as it converts the NCI file to NC
output.
3 Watch the NCI Output window to see the current line the post
is processing.
USING THE POST DEBUGGER / Tracing through a Post • 17
4 Watch the PST Output window to see the debugger quickly
processing post lines.
5 Watch the NC Output window to see the post as it builds each
NC line. The window’s main pane shows the previously output
lines. The Current output box shows the current line being
built.
2
18 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
Using Breakpoints
Often, you don’t want to debug an entire post from the beginning.
More likely, you want to trace from a specific location in your post.
Breakpoints make this type of debugging possible.
X To trace with breakpoints
1 Start the debugger. The debugger’s NCI Output and PST
Output windows display the intermediate NCI instructions
and the PST file, respectively. The current PST line displays in
bold.
2 Click the Run button to execute the entire post and populate
the debugger’s windows with output.
3 In the NC Output window, locate the instruction where you
want to start debugging.
USING THE POST DEBUGGER / Using Breakpoints • 19
4 Double-click the NC line. The debugger highlights the NCI
and post lines that generated the code.
5 Right-click the highlighted post line, and choose To g gl e
Breakpoint from the pop-up menu. A small arrow appears
next to the selected line.
2
6 Choose File, Quit to stop the debugging session, but leave the
debugger open.
7 In Mastercam, click the Post selected operations button, and
then click the debugger button in the Post processing dialog.
The debugger reactivates and waits for your command.
20 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
8 Click the Run button. The debugger processes the post until it
gets to the breakpoint you set, where the debugger pauses and
waits for your command.
9 Click the Step Into button to start tracing from the
breakpoint.
Watching Variables
USING THE POST DEBUGGER / Watching Variables • 21
Often, an invalid variable value is the cause of a post problem, so an
important part of debugging is watching to see how and where post
variable values change. The MP/EMP Debugger provides the Watches
window for monitoring variable values. When you add a variable to
this window, you can step through a post and see the variable’s value at
any point in the posting process.
X To watch a variable
1 Start the debugger.
2 If you do not see the Watches window, choose View, Watch
from the debugger’s menu.
2
22 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
3 In the PST Output window, locate the variable that you want
to watch.
4 Right-click the variable, and select Add Watch from the pop-
up menu.
USING THE POST DEBUGGER / Watching Variables • 23
5 Trace through your post, watching for variable values and
changes in the Watches window.
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24 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
chapter 3
The Debugger Windows
In this chapter, you will learn about:
The PST Output Window. . . . . . . . . . . . . . . . . page 26
The NCI Output Window . . . . . . . . . . . . . . . . page 27
The NC Output Window . . . . . . . . . . . . . . . . . page 28
The Error Output Window . . . . . . . . . . . . . . . page 30
The Watches Window . . . . . . . . . . . . . . . . . . . page 31
The Stack History Window . . . . . . . . . . . . . . . page 32
The Post Lists Window. . . . . . . . . . . . . . . . . . . page 33
The Post Debugger displays debugging information in seven
child windows. This chapter describes each of these windows.
26 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
The PST Output Window
The PST Output window (Figure 3-1) displays the currently active PST
file. As the debugger feeds the NCI file to the post, it works through the
PST Output window’s contents, updating and building content in the
other debugger windows. For example, the NCI Output window
“bolds” the current line being processed by the post, whereas the NC
Output window displays NC code as it is output by the post.
Figure 3-1: The PST Output window
THE DEBUGGER WINDOWS / The NCI Output Window • 27
The NCI Output Window
The NCI Output window (Figure 3-2) displays the NCI code that
Mastercam created from your part file. This is the non-machinespecific data that the post processor processes to create the machinespecific NC file. The NCI Output window uses bold text to show the
line currently being processed.
Figure 3-2: The NCI Output window
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28 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
The NC Output Window
The NC Output window (Figure 3-3) displays the NC code the post is
generating, along with other information such as the NC line number
and the number of the NCI code line that produced the output. The
Machine Type and Stream information is most useful with EMP posts.
Figure 3-3: The NC Output window
You can resize the columns to suit your needs or even collapse
columns to hide information. To resize a column, drag the vertical line
to the right of the column label. For example, when debugging a
traditional post, you might want to collapse the Machine Type and
Stream columns to hide that information, as shown in Figure 3-4.
THE DEBUGGER WINDOWS / The NC Output Window • 29
Figure 3-4: Hiding columns in the NC Output window
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30 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
The Error Output Window
The Error Output window (Figure 3-5) shows any errors that occur
during post processing.
Figure 3-5: The Error Output window
The Watches Window
THE DEBUGGER WINDOWS / The Watches Window • 31
The Watches window (Figure 3-6) displays the variable values that you
have selected with the Add Watch command. The window displays
both the previous and current values of a watched variable.
Figure 3-6: The Watches window
You can save a set of watch variables (called a watch set) by clicking the
Save button, or load a previously saved watch set by choosing its name
from the watch set drop-down list (Figure 3-7). You can also clear and
delete watch sets.
Figure 3-7: Saving and loading watch sets
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32 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
The Stack History Window
The Stack History window (Figure 3-8) shows the post’s execution
path, as the debugger goes from one post block to the next.
Figure 3-8: The Stack History window
THE DEBUGGER WINDOWS / The Post Lists Window • 33
The Post Lists Window
The Post Lists (Figure 3-9) window contains four tabs of reference
information, including the post group codes, as well as predefined and
user-defined strings, variables, and post blocks.
Figure 3-9: The Post Lists window
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34 • MASTERCAM X3 / MP-EMP Post Debugger User’s Guide
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