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Did you read the PDF in this Post?
DNC on Fanuc OM
Al.
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I am trying to drip feed from bob/cad 21 to a fanuc om. I keep getting a O87 alarm. I know it can be done because i did it before. I have read all the posts on the subject(or most). I have gone into the port settings and change the slider to low.
The machine trys to run but i get the alarm. Also the program number doesnt show up on the screen.
Can any one tell me how i should have the controller set up. Is it >tape mode>then cycle start>then send program from computer
Did you read the PDF in this Post?
DNC on Fanuc OM
Al.
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
i can get the spindle to come on. I have the program number. But i still get the alarm. For whatever reason it wont shut of when the buffer gets full.
i am sure that last time all i had to so was go into the device manager on the pc and turn the slider back.
will try a line delay on bobcad to see if i can slow it down enough to get through the tool change and rapid moves
line delay doesnt work...get the program to run but translates way to much into the progam...makes it run in little jerky moves with the same delay i put in..
as near as i can tell something is not sending or getting the signal to turn of the data flow...
Can anyone tell me what parameter G127.5 is and where or how can you find it...
is that the problem
G127.5 is a bit that is turned on in the ladder (PMC to CNC), usually the MTB has to program it into the ladder when the machine is commissioned, via a switch somewhere on the panel or in the enclosure.
What cable are you using, is the software set for XON/XOFF?
Al.
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Not sure how to explain what cable i am using. All i know is it was made for us. And it has worked for a while now. i will look to see if it is damaged. Is it possible for the cable to be damaged and still send programs. The program sends fine....it just wont stop sending. Does the signal come back from the controller via a different wire than the program goes to it.Originally Posted by Al_The_Man
If i go to dianostics and bring up bit 127 it shows all zero's. Is that the one? Does that parameter allow the controller to tell the pc to stop sending?
The software is set for xon/xoff. and so is the computer in the properties for the port. The software i am pretty sure is right. I have the baud rate at 4800, even parity, 2 stop bits , the othe number is 7. The handshake is software and the xon/xoff is checked.
Just seems weird to me...i have drip fed on this computer and mill before. That is why i cant understand it.
You can see G127.5 if you push DIAGNOS/PARAM button some time( or pushed DIAGNOS/PARAM one, then soft key Diagnos), key in No. then 172 then INPUT
Do you mean you need to make DNC mode( run program directly from PC)?
yes...i am trying to drip feed from a pc. It is a large program.
to run trough this step by step to start ..
1. turn knob to tape mode
2. push cycle start it lights up green and get the lsk flashing
3. send from pc
4. spindle orients and then i get the 087 alarm
that is what i am doing is it right?
Last edited by kirby; 08-12-2008 at 11:55 AM.
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