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'DR SIGNAL OFF alarm' Faunc

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DR SIGNAL OFF alarm

This forum post has messages dated from 02/14/08 through 05/31/10, please be sure to read all the messages. If you feel it is old or outdated, please follow up with a question or comment and someone may be able to update it, or reply with newer information if you have it.

cnc-forum - Faunc

DR SIGNAL OFF alarm

Thank author of this post/commentHi

I've got Dahlih MCV-720 vertical milling machine control unit is Fanuc 18M. I load from pc to machine's HDD cnc program but I push the program start button "DR SIGNAL OFF" alarm. How can I solve the problem


#1

Peking
Thank author of this post/comment1.Do you used hardware protocol or software protocol

2.protocol and cable have to compatible.

3.software protocol you can shortage 4-5 , 6-8-20 at cnc (25 pin )

4.hardware protocol cnc 4-- pc 5, cnc 5-- pc 4. and cnc side

6-8-20 jumper

5. ic circuit was broken.

6.simplest way to check handshake signals, you can make a plug according 4-5 , 6-8-20 jumpered and put on cnc system. And then push read button. (no computer) If handshake signal is ok fanuc system will flash LSK or EDIT as like as cnc system is reading and cnc no alarm.

Sorry my poor english!


#2

stevem

the answer may be simpler than that. check nc parameter 0, bit 0. in many cases people accidentally change this bit when searching for a parameter. it is the tv check function. it should be a 0.

#3

easyDnc

The DR alarm is always caused by missing connection on the cable.

At the CNC end of the cable make a shorting link between pins 6, 8 and 20 and the problem will go away.

If you buy an RS232 cable from a computer shop then the above link will probably not be present so make up the cable yourself.

www.easydnc.com


#4

gunaselvan

what is LSK in vmc give me an expansion of each letter

#5

gwarble

"LSK meaning"

LSK is short for "label skip" i believe... which is skipping from % to the first end of block

Thank author of this post/comment""from pc to machines HDD""

You say you are loading from pc to machines HDD

Hdd is data server unit

Therefore you need FTP cable connected to Dataserver

and set up a local network from pc


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