Need Help!- Fanuc 0M number and dripfeed?

[jeppes]

I don´t know which number my fanuc has a,b,c or....?
OMM: 0A66-19
PMC: 0F-K
Which one shows what it is?
I'm trying to get it to dripfeed, is that possible, and how?
I've tried to change parameter G127 without any luck. Is it because its not possible to change?
Is there anyone who can explain this to me in a simple way?

Thank you
-Jeppe, Denmark

[Al_The_Man]

The G127.5 is not a parameter per se but a internal register that is used to pass information from PLC-> CNC.
This is set by a switch installed by the MTB or OEM as an option.
When the switch is set the DNCI bit (G127.5) changes from 0 to 1.
See attached PDF.
Al.

[jeppes]

Thanks AL_the_man
So you say it is possible to DNC with my Fanuc 0M?? The machine is a LEADWELL MCV-OP..
Jeppe DK

[GPena]

Jeppe:

To work in DNC mode depends on your machine, if you are able to see the ladder (usually possible in B,C and D models) you can search for 127.5 coil; if it is there then the DNC mode is installed, just see what is in the line to activate 127.5. If not, then you'll have to install it by adding a line in the ladder, we have a ladder editor for 0A(some versions), B, C and D; if it is required.

If you can't see the ladder and you do not have the tape mode I will suggest that you go to auto mode and press every button in the operators pannel to see if the signal 127.5 turns on.

Please let me know what happens to see if I can be helpfull.

Greg.

[samu]

how can i see ladder on a 0-MB??

[GPena]

Samu:

Well, press key "PRM/DGNS" several times, the first time it'll take you from parameters to diagnostics, the second time from diagnostics to ladder. Sometimes it is not possible to see the ladder on 0B controls due to a control condition, let's say 50/50 of the times. If you can not open the ladder in the machine then you'll have to use a Fanuc Ladder console to do that, we have one; if you need it please let me know.

Greg.

[jeppes]

Hello Greg ... I can see the ladder in the controler and in the book
|-D480,2------G127,5-| But what is D480,2? I have tried AUTO and pressed all the buttons without any luck.. So what to do now, any suggestions ?? I use Cimco on the Pc..
Jeppe S

[Al_The_Man]

Originally Posted by samu how can i see ladder on a 0-MB??

Should be parameter 0060.2 set to 1 if possible on this version.
Al.

[GPena]

Jeppes:

D480.2 refers to diagnostic 480 bit 2, change it to 1, check the ladder after that, signal 127.5 must be on, with that you'll have the DNC option active.

Greg.

[jeppes]

Originally Posted by GPena Jeppes: D480.2 refers to diagnostic 480 bit 2, change it to 1, check the ladder after that, signal 127.5 must be on, with that you'll have the DNC option active. Greg.

Thank you Greg, you're my man...
I made my first feed dripping yesterday. Do you now if´its possible to make a manual switch instead of changing the parameter?
I'll buy you a beer if you ever come to Denmark...

[GPena]

Jeppes:

That beer sounds good, Denmark is a little bit far from Mexico, so, maybe it will have to wait, thank you for that invitation. About your question:

It is possible to enable the DNC mode with a button on the operators pannel of your machine, unfortunatelly to do that you'll have to install and wire the button (easy thing) and edit the ladder to change the line with a fanuc console and that will cost about $1,200.00 us. If you want to do it let me know, maybe we can help you, otherwise you'll have to change the diagnostic every time.

I am glad I was able to help you.

Greg.

[Anders_K]

TAKANG VMC – Fanuc 0M model C 1992. This is what it says in the papers. BUT at startup it says PMC: 0001-A2. So if it really is a C-model? Would like to dripfeed. I have changed diagnostic 480 bit 2 to (1) in order to activate DNC, nothing happens. Then I would check the ladder to see if I can find signal 127.5. If I press SRCH in the ladder program, I get “ILLEGAL OPERATION” and can’t then make a search. Can anyone tell me how to check the ladder or another way to check if the machine is able to dripfeed?

Best regards
Anders K