Problem- FANUC OM ORIGIN

[ILCORKILL]

Hi. I have a Dugard eagle 1000 which has changed the way it datums the workpiece in the last few weeks.

Usually when i origin out the relative page to all zeros, and the copy the machine coords to the workpage G54, if i the press reset or type [MDI]
G54 ; and cycle start, the machine sets the coordinate system but alters the relative coordinates so they are the difference between the new datum and the previous datum. I then have to go back to the relative page and re-zero the relative coords. OK

What has changed is that over the last few weeks, when i set the G54; in mdi, it doesnt change the relative coordinate system values so there is no need to rezero the system. I am sure this is not normal and have had problems when setting multiple datums on the machine.(G54 G55 G56) Could it be that a parameter has changed and do i need to check them all against the manufacturers default values. The operator had accessed the parameters to reset the carousel position after a crash about three weeks ago but there is a strict procedure to follow for this and he denies changing any other parameters other than the one needed.

Any help or suggestion would be greatly appreciated

[dcoupar]

What parameter #s did he change?

[ILCORKILL]

They were in the diagnostic page d0502 d0510

ian

[MysticMonkey]

What Fanuc Control do you have on your Eagle.

The only parameters you should need to change on the 0i series are the counters which specify which tool is in which pocket

and possibly P1850 for tool change at 'Z0' position

prior to the 0i, Dugards sold older fanuc VMC's which were YANG brand

******EDIT*******

AH Fanuc 0M sorry I have no data, give Dugards a ring.

[WGoyer]

Could your "Manual Absolute" toggle switch be in a different position? The name of the switch defies logic, but, its purpose is to allow quick, manual changes to the coordinate zero by using the jog pushbuttons or MPG. Anytime I hear that a coordinate changes when "Reset" is pressed, I suspect that the Manual Absolute feature is turned off. I'm pretty sure that most operators run with it on, so that Reset doesn't alter the coordinate system.

Warren
www.uptimecorp.com

[WGoyer]

Just to prove my point about how the "Manual Absolute" defies description, I've taken the liberty of quoting the current Description Manual for the OiC:


When tool is moved by manual operation, whether to add the move
distance to the absolute coordinate value in the workpiece coordinate
system is selected depending on the input signal *ABSM.
When tool is moved by manual operation when *ABSM is set to 0, the
move distance is added to the absolute coordinate value.
When tool is moved by manual operation when *ABSM is set to 1, the
move distance is ignored, and is not added to the absolute coordinate
value. In this case, the work coordinates is shifted for the amount tool was
moved by manual operation.


All I can say is if you hit reset after a move and the coordinates change, turn this feature "ON". I saw a very nice V8 engine block get scrapped once because of this.

Warren

[fanucman]

so wait.. if you hit reset the coordinate clears?

if it does check parameter 394 bit 6...

if 0 work coordinates not cleared when pressing reset button
if 1 work coordinates are cleared when pressing reset


or parameter 45 bit 6

1 sets celar conditions using reset key
0 sets reset conditons using reset key

if 1 check to make sure para 391 bit 7 is either 1 for special g codes not cleared by reset or
0 all g codes are cleared by reset

[ILCORKILL]

Hi warren

the manual absolute is set right. That was the first switch i checked as it has happened before. (not scrapping a job tho)

I've found the instalation floppy with the nc parameters on it so will spend some time today comparing them. The next problem is finding a pc with a floppy drive!!!

thanks

[MysticMonkey]

Check
P0002#1
and
P7002#1

[ILCORKILL]

Parameter 0002 is the offender

all sorted.

many thanks to all

ian