Topic: HOW TO RUN PROGRAM DIRECTLY FROM PC. RS232

By: Guest

Posted on: Oct 14 2019 at 03:36:38 AM

Is that possible to run program without load it to Fanuc 18-m ? there is not enough memory on fanuc and bigger programs can not be send fully. I've got only rs232 port on machine .

By: Guest

Posted on: Oct 14 2019 at 12:18:31 PM

You mean "Drip Feeding" (Fanuc refer to this as "Tape Mode")

EasyDNC/RemoDNC does not have or need any special setting for drip feeding. Just ensure flow control in DNC Setup is set to XON/XOff.
Also in DNC setup make sure the checkboxes "Wait for CNC Start cmd" and "AutoRepeat" are both empty (Not ticked)

Your CNC console may have a switch or dial with "Tape Mode" written on it.

Get the program in the PC ready to send but do not press the send button.

Go to the CNC, Select Tape mode then 'Cycle Start'.
Go to the PC and press the 'Send' button.

As data starts to flow the machine should start cutting.

The very first time you do this I would try it with a very small program. Maybe just one line with a small move in the air.

Once you have that working you can try with a bigger program.
If you get Overrun/buffer over flow allarm at the CNC then go back to DNC setup and increase block delay (bigger number). If that doesn't help then you may need a lower baud rate. But if the baud rate is too low the machine might start jerking. It's a kind of balancing act and adjusting baud rate and block delay till you get it just right.

By: JG

Posted on: Jan 16 2020 at 12:00:55 PM

Is there any difference between the way the RS232 cable is wired for standard code transfer and drip feed mode. i cotiue to get sr834 alarm buffer overflow 2.

By: Guest

Posted on: Jan 19 2020 at 06:46:19 AM

Sounds like a flow control problem.(sounds like a Fanuc control?)

Cable is the same.

When you get the alarm/overflow does easyDNC ignore the alarm and keep feeding lines of data? or does it stop as if it's noticed the alarm and stopped sending?

(1) If it keeps feeding lines then flow control is not working at all. Go into EasyDNC setup and enable XOn/XOff flow control.

or

(2) If it seems to notice the alarm and stop sending data then flow control is working but not working properly. Try increasing the Block delay as mentioned in the second post above. Also, if you know how, go to Windows Device Manager, select the port, advanced, disable FIFO. (If you don't know how then use the search box at the top of the forum home page and search for FIFO. There's a few discussions about it.

Topic: HOW TO RUN PROGRAM DIRECTLY FROM PC. RS232

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