Fanuc 18i mb spindle on/off durning dnc

[krustykrab]

For whatever reason my machine builder did not include the option to turn the spindle on or off during an nc cycle, even in "slide hold"

Does anyone know how to turn this function on? It was suggested that the plc ladder would have to be editted.

Thanks.

[GPena]

It is hard to belive that it is not included, have you checked the M03, M04 and M05 signal in the ladder??? If they are not present you will have to edit it.

GP.

[krustykrab]

GP,

I couldn't believe it either. We've had the machine for a year, and only now do I have the time to deal with it.

I know nothing about the ladder...nor do I even know where to look.

If you would be able to guide me to the right page I'd be grateful.

[dcoupar]

What make and model of machine are we talking here?

[krustykrab]

The machine is a Euma HMVC 1600A (first of it's kind I'm afraid.)

[GPena]

IF you program M03 S1500; in MDI mode what the machine does????

GP.

[krustykrab]

IF you program M03 S1500; in MDI mode what the machine does????

GP.

M03 S1500 turns the spindle on clockwise at 1500rpm.

My problem is not being able to turn on the spindle....

During the running of the nc program (dnc) I wish to sometimes pause the program, turn off the spindle, then turn it back on again, then restart the program. For whatever reason, the buttons on the controller to turn spindle on/off during the running of a nc program are inactive....I cannot even switch over to mdi. The only way is to abort the program.

[GPena]

Krusty, this is a ladder issue; the ladder is a program that the machine tool builder makes for his machine, and if for some safety reason he decided not to let the manual buttons to work with the machine in auto mode the only possible way to do it is to change the ladder. Depending on the model of your control there is a way to change the ladder, it costs some money but if you think it worths. Other think is that you contact the machine tool builder to ask him if there is a way to do that, maybe there is a hidden PC parameter that they know.

GP.

[krustykrab]

Thanks GP....I guess I will have to look into getting a Fanuc service guy in here then.

[GPena]

You can call them and ask if they can do it, as far as I know they only work with Fanuc issues and this is a machine issue. But a call is allways good. What control it is, I know it is Fanuc, but the model and version??

GP.

[Dan Fritz]

GPena is right. It's a ladder issue, which can only be resolved by the machine tool builder (not Fanuc).

Normally, it's possible to stop a program, put the control into MDI, type in a command (like M03 or M05), then switch back to Auto mode and continue the program. Pressing Reset would dump the input buffer, so you can't do that and expect to continue running the program.

I would ask the machine tool builder why you can't select and use MDI mode while in the middle of a program. If they're not able to change the ladder for you, maybe they can just add some manual controls for the spindle drive.

[banausicjosh]

My boss and I have been trying to do the same thing with a Oi-mate on a colchester machine since we got it. Finally I just started pressing all the buttons on the machine while in feed hold, and the spindle reset button stopped the spindle. It restarted just fine when I resumed with the start button. I don't know if you have a spindle reset button, but I have been following your thread here and on another forum, so I thought I'd share. Good luck, Josh