Fanuc O-T 86 alarm

[ttorqueshop]

I'm getting an 086 alarm on my lathe when I type in a program # and then hit "input" to load a program. My alarm list gives this description-

" 086 DR SIGNAL OFF - When entering data in the memory by using Reader/Puncher interface, the ready signal(DR) of reader/puncher was turned off. Power supply of I/O unit is off or cable is not connected or a P.Z.B. is defective."

Anyone know what this means?? I've never seen this alarm before. This is a new machine for me so I'm trying to get it set up and unfortunately I don't know 100% what I'm doing on this machine because I got it used and it didn't come with any manual or anything. Also, If I zero out the X value for a tool in my geometry screen and then bring the tool down to apporximately X of zero...shouldn't the X value on the position screen read close to zero...and not 18 inch's?? Any help would be awesome!

[Tcooper571]

The 086 alarm could be caused by a few things. Either the pin configuration of the RS232 cable you are using is incorrect or there is a problem with the cable itself. But chances are all it is is a parameter setting does not match the system you are using to upload/download, example would be Baud rate, stop bits, etc. If you have an OT parameter manual, these should be in the first section somewhere.
As far as the X-axis location the value you are seeing is normal when clearing out the tool offset. This value is generally the distance from its home position to center line of the spindle (but would actually only be half of these as it is double for the X-axis). There are ways to change the "Grid Shift" so something like a drill holder or what have you can read zero when no tool offset is active, but that is just an option. Normally when you set a tools geometry offset and make it active by calling it up in programming, the position on the absolute page will reflect the actual diameter of the position of the tool. Hope this helps.

[ttorqueshop]

Thanks for the reply. I think the comm. problem was with my RS-232 jumper box, but I think I got that fixed now. I seriously wish I had the parameter manual but I'm afraid I don't. Having that thing would make my life much easier! Thanks for your input. I appreciate it.

[dcoupar]

What model machine is it? Does it have a "Q-setter" (tool presetter)? The numbers in the X-axis & Z-axis are coming from parameters for the "first zero point" I believe it's parameter 708 but I could be wrong. If I'm right, the value will be the metric equivalent of the X position that shows up when you zero the machine.

On the DB25 connector at the machine, jumper 4-5, and 6-8-20. Use Software (XON/XOFF) handshaking, and make sure baud rate, parity, stop bits, etc. match. That'll stop the alarm 86

[ttorqueshop]

It's a Daewoo Puma 6S with O-T control. Wish it had the Qsetter but it doesn't. How do I set the parity and stop bits on the machine? What parameter is it? I got the Baudrate set but I don't know what parameters change the other settings.

[Tcooper571]

The Stop bit parameters can be set for 1 or 2 stop bits parameter 0002#0(parameter #2 bit 0 just in case) for I/O channel 0. I am assuming the I/O channel is set to zero, if not let me know what it is set to. The Parity Bit parameter is 0051#2 and can be set for Parity or No Parity.

[ttorqueshop]

Ok I'm almost there! I can get a program to the machine but not without problems. Here's what's happening: I get the machine ready to receive a program, then go into Mastercam and send the program. The machine gives a communication alarm. I resset the alarm, type in the program # and hit input on the machine...and it works! Why will it work the second time but not the first time?? Anyone got any ideas? Thanks for all your help!

[Tcooper571]

Try sending from Master Cam first, then go to the machine and have it receive. My system is not Mastercam but when I send to my machine I send first from the computer, then go receive at the machine.

[ttorqueshop]

If I send it from Mastercam first, then go out to the machine to receive it, the machine doesn't receive anything. It just sits there and blinks LSK...which on my machine means it's ready to receive a program. If I then go back in and send it from Mastercam again, I get an alarm on my machine. I reset the alarm, type in the program #, hit input, and it works. I'm lost as to why it would do that.

[Tcooper571]

Whats is the alarm number, message?

[ttorqueshop]

It's an 085 alarm...communication error.

[Tcooper571]

It is strange that it would work the second time. It sounds like there still is a parameter not quite right yet. Maybe try the stop bits parameter again, changing to ti opposite what it is now. Not quite sure. It osunds like your close though, just minor parameter adjustments probably.