Format Statements

Hi guys Xavior again,

Here is the deal this time, i have been tapping quite a bit of work on my haas machine but seem to have an issue with the output mastercam is giving me for a feed rate for tapping. I originally program lets say 4.3443 for a feed rate but when it spits out the program it only giving me 4.3

I do believe when tapping it is required to be very accurate and not to only 1 decimal place.

Can anyone help me adjust this so i can have the feed rate during taping to output maybe 2-3 decimals.

Please see below:

# --------------------------------------------------------------------------
# Format statements - n=nonmodal, l=leading, t=trailing, i=inc, d=delta
# --------------------------------------------------------------------------

#Default english/metric position format statements
fs2 1 0.7 0.6 #Decimal, absolute, 7 place, default for initialize (:)
fs2 2 0.4 0.3 #Decimal, absolute, 4/3 place
fs2 3 0.4 0.3d #Decimal, delta, 4/3 place
#Common format statements
fs2 4 1 0 1 0 #Integer, not leading
fs2 5 2 0 2 0l #Integer, force two leading
fs2 6 3 0 3 0l #Integer, force three leading
fs2 7 4 0 4 0l #Integer, force four leading
fs2 9 0.1 0.1 #Decimal, absolute, 1 place
fs2 10 0.2 0.2 #Decimal, absolute, 2 place
fs2 11 0.3 0.3 #Decimal, absolute, 3 place
fs2 12 0.4 0.4 #Decimal, absolute, 4 place
fs2 13 0.5 0.5 #Decimal, absolute, 5 place
fs2 14 0.3 0.3d #Decimal, delta, 3 place
fs2 15 0.2 0.3 #Decimal, absolute, 2/1 place (feedrate)
fs2 16 1 0 1 0n #Integer, forced output
fs2 17 0.2 0.3 #Decimal, absolute, 2/3 place (tapping feedrate)


Thanks in advance

Xavior

There's a few ways to do this.... First, save a copy of your post now before doing any editing to protect your current version.


I see you have a statement (17) created but you won't need this. The output you're looking for already exists at (10) for 2 place and (11) for 3 place. And actually what (17) is really saying is to output 2 place for inch and 3 place for metric.

Feedrate has a general output that's common in a generic or "standard" post. If you don't mind your normanl cutting feedrates to also be able to output 2 or 3 place decimals, the fix is really simple. Since most people punch in their own feeds with other cutters anyway, most don't mind this and will simply opt to this method.

To do this, go to your "Toolchange / NC Output Variable Formats" section. Look for something like this:
fmt F 15 feed #Feedrate

In the above, simply change the number "15" to either a "10" for 2 place or "11" for 3 place and you're done.


If you truly want to have 2 or more types of feed outputs for different cuts, this will take some more work as you'll need to create new variable strings and further edit the post sections of the cut.

Xavior

Have sent you back your post with mods
- both tapping cycles are now done using Fs2 2 statement (ie 4.3), same output as XY outputs for the metric or inch units
( you do have 2 tapping cycles, they were different to each other- they now are identical - for rigid tapping )
- comments modified, seperated the XY&Z offsets comments away from the tool comments
- XY & Z offsets comments, if not zero, will be output after each operation comment. ( these can change with each operation & should be highlighted when used )
- placed the tool staging straight after toolchange for easier reading/editing ( some machines don't like the pre-select when doing a restart - tool is already pre-selected & the control would alarm )

Fill-up the keg :cheers:

Steve

Hey guys,
We are using the standard MPLFAN post from mastercam,
our lathe is a regular 2 axis single turret with a fanuc 0iTD controller.
The current posts for outside thread.
G20
(TOOL - 5 OFFSET - 5)
(OD THREAD RIGHT INSERT - NONE)
( OD THREAD )
G0 T0505
G97 S400 M03
G0 G54 X.5737 Z.2167
G76 P010029 Q.001 R.001
G76 X.2993 Z-1. P372 Q70 R0. E.0625
G28 U0. W0. M05
T0500
M30
The problem seems to be the first g76 line.
G76 P010029 Q001 R.001 the controller complains about the decimal point for the Q.
How can I modify the post to remove the Decimal point for this Q only?
Thank you.
Mike

Quote:

---

Originally Posted by psychomill

There's a few ways to do this.... First, save a copy of your post now before doing any editing to protect your current version.


I see you have a statement (17) created but you won't need this. The output you're looking for already exists at (10) for 2 place and (11) for 3 place. And actually what (17) is really saying is to output 2 place for inch and 3 place for metric.

Feedrate has a general output that's common in a generic or "standard" post. If you don't mind your normanl cutting feedrates to also be able to output 2 or 3 place decimals, the fix is really simple. Since most people punch in their own feeds with other cutters anyway, most don't mind this and will simply opt to this method.

To do this, go to your "Toolchange / NC Output Variable Formats" section. Look for something like this:
fmt F 15 feed #Feedrate

In the above, simply change the number "15" to either a "10" for 2 place or "11" for 3 place and you're done.


If you truly want to have 2 or more types of feed outputs for different cuts, this will take some more work as you'll need to create new variable strings and further edit the post sections of the cut.

---

Tried changing this, please see below:

# --------------------------------------------------------------------------
# Toolchange / NC output Variable Formats
# --------------------------------------------------------------------------
fmt T 4 t$ #Tool number
fmt T 4 first_tool$ #First tool used
fmt T 4 next_tool$ #Next tool used
fmt D 4 tloffno$ #Diameter offset number
fmt H 4 tlngno$ #Length offset number
fmt G 4 g_wcs #WCS G address
fmt P 4 p_wcs #WCS P address
fmt S 4 speed #Spindle Speed
fmt M 4 gear #Gear range
# --------------------------------------------------------------------------
fmt N 21 n$ #Sequence number
fmt X 2 xabs #X position output
fmt Y 2 yabs #Y position output
fmt Z 2 zabs #Z position output
fmt X 3 xinc #X position output
fmt Y 3 yinc #Y position output
fmt Z 3 zinc #Z position output
fmt A 11 cabs #C axis position
fmt A 14 cinc #C axis position
fmt A 4 indx_out #Index position
fmt R 14 rt_cinc #C axis position, G68
fmt I 3 iout #Arc center description in X
fmt J 3 jout #Arc center description in Y
fmt K 3 kout #Arc center description in Z
fmt R 2 arcrad$ #Arc Radius
fmt F 11 feed #Feedrate
fmt P 11 dwell$ #Dwell
fmt M 5 cantext$ #Canned text
fmt F 2 pitch #Tap pitch (units per thread)

But its still rounding it for me even after i posted the feed rate to be 5.225 it rounded to something like 5.3. Any ideas?

Xavior

DO NOT ALTER that feed format, that affects every other F output in your post---put it back to 9

Look for

Code:

---

ptap$            #Canned Tap Cycle
      pdrlcommonb
      result = newfs(2, feed)  #added ST
      pcan1, pbld, n$, *sgdrlref, *sgdrill, pxout, pyout, pfzout, pcout,
        prdrlout, *feed, strcantext, e$
      pcom_movea

---

your post also had pmisc2$ for RIGID TAPPING
( you have been selecting the floating tap cycle for rigid tapping )

The fix was in the 1st tapping cycle where the Feed value needed to be given another format within that cycle. The RED section is what alters the format, and what I added to the ptap$ cycle from the pmisc2$ to make them identical to each other, plus the 2 was a 12 ( 4/4 place output for all units, now 4/3 places )

I had fixed your tapping F output to be the same format as the X Y Z outputs, they would "switch" depending on the metic/inch units selected