Makino Edge2 - Illegal Set Value in Jump Command

Hello,

I'm rather new to machining in general and to EDM. So far I've written a few single axis machining programs. The machine is a 2002 sinker style Makino Edge2S with MGF control and I'm programming with the built in conversational Model Plan programming. I've achieved successful burns in a reasonable amount of machining time with a high quality finish. In other words, I'm satisfied with my results and progress thus far.

However, at the start of each machining process of all of my programs I get the following warning:

1402: Illegal Set Value In Jump Command

From the alarm code book it reads:

Cause: The set value that is not permitted is commanded in the G76 command block.

Remedy: Correct the program.
(Reference document: The jump G76 and G77 in the Chapter 3.10.2
programing in "Operation Manual")

After the warning appears, I have to press cycle start twice before the program starts to run again. Then at the next machining process change the same warning appears and I have to press cycle start two more times to keep the program running all the way through the last process. Obviously this keeps the operator at the machine unable to perform other duties because he has to keep starting the machine between each process change.

When Makino came first came out to perform training, the applications person who wrote our initial program for our training couldn't figure it out and even called other Makino Applications people to elicit information from them.

It would seem since I'm using the Modal Plan conversational programming that it would prevent me from inputting incompatible values...?

I can't figure this one out, has anyone solved this one before?... any ideas?

Thank you.

I have faith Brian can solve this. He checks in frequently.

DanyEDM,

It sounds like you are doing all the right things, and I am happy to hear that you are able to produce good parts!

Are you able to share a copy of your program (a picture from your phone would be fine)? I just want to make sure there is nothing out of the ordinary in the program, and I want to see what you have on the G132 command line (adaptive control settings)and the "F' number setting (jump speed amount) in any G76 lines.

It might be possible that this is a Parameter issue of sorts...the error message is related to the Jump Speed, so it sounds like the program is asking for a higher jump speed than your machine can achieve.

-Brian

Hello Brian,

Thank you for offering to help, it's appreciated.

Roughing:

G132D61Q2F3 (JUMP SETTINGS);
G103N91X0.545R0.010E154I106J11O13L12P1111S800T300F10(MACH'G);
G113W55X0Y0Z0L1A0D1 (POSITIONING DISPERSED);

Finishing:

G132Q2F3 (JUMP SETTINGS);
G103N91X0.545R0.010E154I109J13O13L12P1111S800T300F10(MACH'G);
G113W56X0Y0Z0L1A0D1 (POSITIOING DISPERSED);

The remaining lines are auxiliary functions: ATC, pol. reverse on/off, dielectric on/off, ATC flushing on/off and move to machine home/program end. All of this code is working as expected.

The electrode is graphite (Mersen Ellor 50) and the workpiece is a titanium forging.

Thanks again.

DanyEDM,

Have you tried inputting a value for the A-Jump setting in the G132 Special Settings command line to force the machine's jump motion to a specific speed?

I suggest changing your G132 line to the following...this will set the A-Jump value to a 5,000mm/min rate that your machine can achieve. The "A-Jump" value can be set to a 30 or 33, and it is the leading "3" in 30 that sets and controls the Z-Axis jump speed.

Roughing: G132D61Q2A33F3

Finishing: G132Q2A33F3

You can also look in your Modal Plan manual (Section 2.5.3) for additional details on the G132 command line items.

- Brian

Thank you Brian, your interest and the swiftness of your response is appreciated very much

I tried both A33 and A30 as recommended with no luck. Same issue as before.

If it means anything to you, I'm performing a side burn in the X axis. If I understand correctly high speed jump is only active in Z axis machining. It would seem activating high speed jump with A3X would go unrecognized.

I did give A0 a go thinking having it in there and set to off would do the trick but that failed too.

Thanks again.

DanyEDM,

Are you seeing the Error Message ONLY in Side-Burn operations? Do you see the Error Message during Z-Axis machining too?

- Brian

Yes, I see it in both side and Z-Axis burns. In my attempt this morning with a Z-Axis burn, I used A33.

Thanks again for assisting in working this one out, much appreciated.

DanyEDM,

This issue sounds more and more like a machine Parameter problem! I will need to check with the Makino Service Team to see if they can dig up the Parameter settings for the Jump Speed Amount for your specific machine. Could you please share the Serial Number of your machine, as this will help us the narrow down some items and might also allow us to dig up the original Factory Parameter values for your machine.

- Brian

Hello Brain,

A few months back we had a battery go out in the control and lost some data. Fortunately, I had already transcribed important programs since we do not yet have a wired connection to that machine yet.

We thought we were going to have to input the whole sha-bang into the control after replacing the battery and to our pleasant surprise all parameters returned to what we believe as factory condition. Everything displayed on the control matched what was listed in our Operations manual. For example, we had changed to standard units from metric units. When we powered back up, the machine reverted back to metric units.

I hear what your saying, however it would seem I should have factory parameters when it comes to the jump settings given our battery failure. After the battery failure I did go back in and change the units back to inch, unmasked some screens, country information, and time zone information. I've gone looking at the parameters listed in the manual a few times for parameters that would see to affect jump settings... without knowing specifically what to look for, nothing "jumped" out at me as a jump parameter.

Parameter 0064 G Modal By Reset is the only parameter I found in our books that has "jump" language in the parameter details. All it indicates about jump is that Jump canned cycle is unconditionally canceled upon reset.

We had a Makino Applications specialist come out about a year ago to get us going as EDM is a new technology to our shop. He saw it himself and made some calls to his Makino colleagues while he was on site and we couldn't get to the bottom of it then. Some of the information at the time indicated Jump Parameters were 660-667... which are not displayed on our control, which is the MGF control. The machine is a used 2002 Edge2S.

Do you know of a parameter masking feature on this machine? Are some parameters hidden? If so, do you know how to un-hide them?

My hope hope has been to find someone on the forums who had the same issue and hear how they solved it.