Machine goes to home instead of next tool path

[medaq]

Not sure why, I have checked force tool change is not checked. But I am randomly getting a return to home added into my code. If I am using the same tool for 2 drill cycles. When it transitions to the second set of holes, the code will randomly throw in a  G0G91G28Z0, no tool change code,. This is not consistent throughout my programs. Just sometimes decides to do this. Any ideas? 

 

%
O0000 (test)
G00 G17 G20 G40 G80 G90
G91 G28 Z0.
G90
(MPMASTER GENERIC 3/4-AXIS VERTICAL)
(DNM 400)
M05
T10 M06 ( #51 DRILL)
(MAX - Z.1)
(MIN - Z-.32)
G00 G17 G90 G54 X1.5721 Y-1.0848 S10000 M03
G43 H10 Z.1
M08
G94
G98 G83 Z-.32 R.02 Q.12 F50.
X1.3029
X1.0429 Y-1.0152
X1.8321 Y-1.0152
G80
G91 G28 Z0.   <---- ( THIS )
G00 G90 X1.2044 Y-.9324
G43 H10 Z.1
G98 G83 Z-.242 R-.1 Q.342 F50.
Y-.2956
X2.0743 Y-.6993
X1.6706 Y-.9324
G80
M09
M05
G91 G28 Z0.
G28 X0. Y0.
G00G90G49G80G40
G90
M30
%
 

[crazy^millman]

Check your operation for a mi switch that may have gotten turned on in the offending operation.

[medaq]

1 hour ago, C^Millman said:

Check your operation for a mi switch that may have gotten turned on in the offending operation.

I do not see anything out of the normal. This is a standard mpmaster post modified.  

[civiceg]

Force tool change checked? disregard I suck at reading

[Frank Caudillo]

1 hour ago, medaq said:

I do not see anything out of the normal. This is a standard mpmaster post modified.  

I've seen weird things happen because of Misc Integer values being different between two operations with the same tool/feed/speed etc. I've even had rotary moves forced because of it. Maybe try selecting both operations and forcing their Misc Integers to be the same through editing common parameters. 

[crazy^millman]

23 hours ago, medaq said:

I do not see anything out of the normal. This is a standard mpmaster post modified.  

Sorry, but I would have to have a .z2g of the offending file then and only then could I say with 100% certainty it is nothing your doing. Please don't take that offensively, but I have posted programs with 500 and 600 operations using Mpmaster posts and never seen what you are seeing without me doing something I missed to make it happen.

[Tim Johnson]

You have different peck rates with the two pecking cycles. If you are using two drills for the different pecks, check the drills geometry. If they have different lengths/diameters MC may think they're different tools.

[Leon82]

When you post does it give you a warning about duplicate tool numbers and ask if you want to generate a tool change in the NCI?

[Leon82]

There have been a few times where I've seen some wacky stuff and just simply deleted the offending toolpath and remade it

[crazy^millman]

2 hours ago, Leon82 said:

There have been a few times where I've seen some wacky stuff and just simply deleted the offending toolpath and remade it

Agree or run the Repair file(Ramesaver) and life was good again.