Backed up their parameters with Tere Term

[youngguns3]

Hi all,

My Denford CNC lathe with OT-B controls has been doing well, with the exception of only having the factory default 10M memory. I am going to upgrade the memory to 120M, but do not know how to offload the parameters to my computer so that I do not lose them. I use Tera Term to download programs into the OT-B controller via an RS-232 port, and think I can use Tera Term to back up the parameters as well, but do not know how yet.

Has anyone ever backed up their parameters with this combination before? If so, may I ask for directions?

Thank you,
Bill Gillen

[Martin]

From what I remeber you need to set the off line softwarwe to receive, then set PWE to 1(Parameter write enble). Then go to the parameter page & press output. This should squirt the parameters down to the pc.
It may be worth writing the 450 diagnostics & 900 parameters down just in case.

[Denford Admin]

It may be worth writing the 450 diagnostics & 900 parameters down just in case.

Make that: It WILL be worth writing the 450 diagnostics & 900 parameters down just in case

Some posts regarding backing up a Fanuc before clearing the memory:
Fanuc 0tc 0mc RS232 reader puncher parameters:
viewtopic.php?f=15&t=2475

This one is long, but lots of tips related to Fanuc RS232 and parameters (especially the bit about not turning off when LSK is flashing!)
viewtopic.php?f=33&t=2316

Triac Fanuc OM-B Memory Upgrade:
viewtopic.php?f=47&t=2097

Hold down EOB when outputting to backup the 900 parameters as well.
viewtopic.php?t=391

[youngguns3]

Hi again,

Thank you for all the input, the transplant seemed to go OK. To our surprise, we did not have to load the parameters back in, but that may have something to do with the previous 10M memory. We compared the parameters anyway to the photos we took, and they are the same, except of course for the memory line. It now shows 49920 free instead of 4096 free.

However, when I press the Input button to load a program, the "LSK" does not flash, and it is not accepting our program download.

We used to use the following procedure to load programs:

Press EDIT button
Press PROGRAM button
Press INPUT button (this is where the "LSK" would flash)
Go to the computer (Tera Term) and click Send File.

However, now the "LSK" does not flash after the INPUT button is pressed (we still see S OT on the bottom right of the screen).

What would be causing the "LSK" to not flash like it used to?

Thanks,
Bill Gillen

[bradders]

We used the following to get LSK functioning ......................

To get LSK flashing

1. Turn protection key HORIZONTAL i.e. protection OFF
2. Press the AUTO Button
3. Press the CYCLE START Button
4. LSK should start flashing in the bottom right hand side of the monitor


FYI. LSK means LABEL SKIP, i often wondered what the initials stood for until eventually i found this.......

LSK means "Label Skip", and you really can't get rid of the display (unless you want to reprogram the CNCs EPROMs)

Fanuc refers to the "Label" as any man-readable information on the leader of a paper tape. Years ago, people used to punch "man readables" on the leader so you could hold the tape up to the light and read the part number, the program number, etc.. This punched pattern meant nothing to the CNC control because it was not in any recognizable EIA or ISO (ASCII) format. The man-readable leader needed to be "skipped" by the control when you tried to read the tape.

Fanuc's Label Skip function simply causes the control to IGNORE any data it reads until it sees a valid Line-Feed or EOB character. You can punch all kinds of junk on the leader of the tape, and the Fanuc will zip right by all that data until it reads a Line-Feed, then it begins reading the G-code data. Even when you're not using paper tape, the LSK function is effective, that's why any DNC system would have to send at least one Line-Feed character to the CNC before the first block of the program. Otherwise, the first block gets ignored.

LSK only goes off when your reading a program (by tape or by RS232), and the first LF has been read. Once you get to the end of the program, LSK comes back on.

[Denford Admin]

Pressing Cycle start in Auto mode would normally run a program wouldn't it?
I wonder if those notes are from a CIM enable fanuc where it is constantly in drip feed mode ??

Anyway, I'd check your parameter settings related to RS232:
viewtopic.php?t=1179

[youngguns3]

Got it!!!

Hi all,

Thank you for all of your help. Everything is good, and it has a 120M memory now. The LSK thing was caused by the change I made to the memory parameter. I put it back the way it was before, plus one digit change, and everything works great and has plenty of room for programs. I hope to help someone else someday the way you have helped me.

Bill Gillen