585,715 active members*
4,288 visitors online*
Register for free
Login
Results 1 to 18 of 18
  1. #1
    Join Date
    Jul 2006
    Posts
    65

    Question Missing Ladder 21TA

    "Accidently" a Star SH-7 with a Fanuc 21-TA control was powered up while holding the 7 & 9 keys...low and behold, it appears the Ladder is now missing(who would have guessed)...fortunately we have 3 other machines that "should" have the same ladder..I'm able to D/L the ladder out of other machines without a problem, and loading into this "dead" machine seems to go off without a hitch...but then, after the ladder transfer is complete I'm getting a pmc alarm ER01 PROGRAM DATA ERROR (RAM), and of course the ladder still appears to be missing...anybody have any suggestion, thoughts, or idea's to send me in the right direction ????

    Thanks ahead of time to anyone who reply's

  2. #2
    Join Date
    Oct 2003
    Posts
    42
    Hi,
    Not familiar with 21, but all our 16 / 18 Model A's PMCs are in EPROM (UV)
    Is yours definitely RAM?
    Anyway, see this document for further explanation of PMC RAM issues(if you have not already seen it)
    http://www.expresscnc.co.uk/engineer/oialarms.pdf
    PDF p.16 (original document p.316)
    Hope this may help.
    Rich

  3. #3
    Join Date
    Jul 2006
    Posts
    65
    Quote Originally Posted by RLMTS View Post
    Hi,
    Not familiar with 21, but all our 16 / 18 Model A's PMCs are in EPROM (UV)
    Is yours definitely RAM?
    Thanks.

    That's where I'm confused, K17#3 is/was already set to 0, which I think implies ROM.. Is it possible the ladder is still there, and just not loading at boot up..everything else is still there, pmc/nc params etc..just the ladder appears missing...I get PMC Alarm ER22 PROGRAM NOTHING, until I upload a ladder, then I get the RAM error.... and I find it very hard to believe that holding the 7 + 9 keys at bootup would wipe the ladder clean, with having to unlock something first.

  4. #4
    Join Date
    Oct 2009
    Posts
    297
    Quote Originally Posted by JMS4287 View Post
    Thanks.

    That's where I'm confused, K17#3 is/was already set to 0, which I think implies ROM.. Is it possible the ladder is still there, and just not loading at boot up..everything else is still there, pmc/nc params etc..just the ladder appears missing...I get PMC Alarm ER22 PROGRAM NOTHING, until I upload a ladder, then I get the RAM error.... and I find it very hard to believe that holding the 7 + 9 keys at bootup would wipe the ladder clean, with having to unlock something first.
    Check parameters 9900 first. What value in 9930 thru 9950?
    Why did you power on holding 7 +9 ?
    Regards

  5. #5
    Join Date
    Jul 2006
    Posts
    65

    params

    Somebody held the 7+9 trying to get to the Boot Screen, like holding the two soft keys on newer controls....

    here's a list of those params...Thank you for your time...


    9900 = 2

    9930
    00010100
    9931
    00000000
    9932
    10000000
    9933
    10000000
    9934
    01000000
    9935
    00000000
    9936
    00000000
    9937
    00000000
    9938
    00000000
    9939
    00000000
    9940
    00000100
    9941
    00000000
    9942
    00000000
    9943
    00011000
    9944
    00000000
    9945
    00000000
    9946
    00000001
    9947
    00000000
    9948
    00000000
    9949
    00000000
    9950
    00000000

  6. #6
    Join Date
    Oct 2009
    Posts
    297
    Holding 7 + 9 at power on will erase the memory in a powermate. Could this be a powermate?
    The parameters you sent seem to be ok.
    When you try to upload the ladder, do you get any alarms?

  7. #7
    Join Date
    Jul 2006
    Posts
    65
    I believe it is a powermate...

    I've attached the Fanuc datasheets for the machine, and a photo of the drives in the back on the machine, which show some kind or memory card. I'm hopeing that's a backup of the the pmc data..


    Thanks again for your time..
    Attached Thumbnails Attached Thumbnails IMAG0387.jpg  
    Attached Files Attached Files

  8. #8
    Join Date
    Oct 2009
    Posts
    297

    Loading info into the Powermate E

    Ok.
    You have two cnc. One is the 21A and the other is the Powermate E. You probably lost parameters in the powermate E not in the 21A control. Now, you have a flash card which is good. The only thing is that you must restore memory from it and most of the people load the bad memory into the the flash card, so becareful!. You must upload from the memory card to the powermate.
    One question:
    Are you able to see the parameters in the powermate? You should see all the parameters in zero and some alarms.

    To load from the memory card into the Powermate:

    1)Put control in Emergency stop condition.
    2)Set switch SW2 to Load (located in the powermate) (Do not touch the flash card, must stay in the powermate)
    3)Green Led S1 will light
    4)Push switch SW1 (data input is started)
    Green led S1 and red led S0 will flicker
    5)If data was input correctly then the leds will be shown as follows:
    Green Led S1 will light. Red led S0 will be off.
    If something is wrong Red led will be flickering.
    6) Set switch SW2 to Normal
    Good luck!

  9. #9
    Join Date
    Jul 2006
    Posts
    65
    Quote Originally Posted by alexfanuc View Post
    One question:
    Are you able to see the parameters in the powermate? You should see all the parameters in zero and some alarms.
    Thanks again Alex...I can see all NC and PMC parameters, and they are all still there. There are multiple alarms due to the missing ladder. (OT + and - on all axis, etc.) The only thing missing is the Ladder. I don't think I can see anything in the Powermate without a "Pendant", I believe I have one here somewhere..I have somebody from Fanuc Boston coming into in the morning. I've got a couple of other machines that "should" have the same ladder. So hopefully I can get the data out of those machines if need be...I'd like to just restore the ladder if possible, I don't have a backup of the NC parameters,which are probably somewhat differant than the other machines, and I can't output them without a running ladder. But what you're saying makes total sense, if the ladder is running on the powermate and not the 21a. But I'm going to wait for some one from Fanuc to be here, before I try reloading to data to the powermate, just incase the data on that card is bad, I'll let you know how I make out...

  10. #10
    Join Date
    Jul 2006
    Posts
    65

    Fixed

    A Fanuc guy was here yesterday, and now the machine has a ladder again. We had another machine with the same ladder, that had memory in the 21TA control, with a backup of the F-Rom on it...so we were able to load the ladder back in with that... All we had to do was load the load the 4th file from the card (which was the ladder). the trick was knowing how to load only the 4th file, I didn't have backup of any of NC params, etc..

    To load the 4 file, we had to type M00001000 {READ} {EXECUTE}
    bit 3 being the 4th file, bit 0 being the 1st file etc,

    This is a list of the order of the backup files on a 21TA backup memory card (atleast it was me)
    1= program
    2= parameters and pitch
    3= variables and offsets
    4= Ladder
    5= PMC
    6 = operation history
    7 = Macro executor ( requires 512K flash card)

  11. #11

    Re: Fixed

    Hi
    I have the same problem on star sh12. But don't have a backup machine. Can u guys help.
    ER22 program has nothing.

    It is giving 506 and 507 alarms as a result.

  12. #12
    Join Date
    Jul 2006
    Posts
    65

    Re: Fixed

    What exactly do you need, Power Mate Ladder, Or Machine Ladder?
    What's the Machine S/N?
    Have you checked the Control and/or Power Mate to see if there's a memory card in it (See photo from a few posts back).

  13. #13

    Re: Fixed

    Hi
    I need the complete back up if possible or else just the ladder should be sufficient. I do have the parameters noted down.
    But not the ladder. If you can mail me the ladder. Can load it with help of Fanuc people here.
    S/n no. 050810.

    Do have the flash card. But no back up in that. Fanuc guy came to check that. But he says need the ladder.
    Star won't provide service in India. Had a talk with them also.

  14. #14
    Join Date
    Sep 2011
    Posts
    2

    Re: Fixed

    Quote Originally Posted by JMS4287 View Post
    A Fanuc guy was here yesterday, and now the machine has a ladder again. We had another machine with the same ladder, that had memory in the 21TA control, with a backup of the F-Rom on it...so we were able to load the ladder back in with that... All we had to do was load the load the 4th file from the card (which was the ladder). the trick was knowing how to load only the 4th file, I didn't have backup of any of NC params, etc..

    To load the 4 file, we had to type M00001000 {READ} {EXECUTE}
    bit 3 being the 4th file, bit 0 being the 1st file etc,

    This is a list of the order of the backup files on a 21TA backup memory card (atleast it was me)
    1= program
    2= parameters and pitch
    3= variables and offsets
    4= Ladder
    5= PMC
    6 = operation history
    7 = Macro executor ( requires 512K flash card)
    JMS4287, can you help me! Can we type M00001000 in what screen?

  15. #15
    Join Date
    Jul 2006
    Posts
    65

    Re: Fixed

    Attachment 378634

    I've attached procedure.

  16. #16
    Join Date
    Sep 2011
    Posts
    2

    Re: Fixed

    Thanks again JMS4287.

  17. #17
    Join Date
    Sep 2020
    Posts
    2

    Re: Missing Ladder 21TA

    what type of memory card you use?

  18. #18
    Join Date
    Sep 2020
    Posts
    2

    Re: Missing Ladder 21TA

    Quote Originally Posted by JMS4287 View Post
    I believe it is a powermate...

    I've attached the Fanuc datasheets for the machine, and a photo of the drives in the back on the machine, which show some kind or memory card. I'm hopeing that's a backup of the the pmc data..


    Thanks again for your time..
    what type memory card you use?

Similar Threads

  1. Ladder on 0T
    By guhl in forum Fanuc
    Replies: 5
    Last Post: 07-27-2023, 10:44 PM
  2. Replies: 20
    Last Post: 12-19-2012, 07:35 AM
  3. FANUC 21TA PARAMETER ISSUES
    By metalmucher in forum Mori Seiki lathes
    Replies: 4
    Last Post: 05-22-2010, 05:14 AM
  4. Ladder Help
    By Scottjit in forum Fanuc
    Replies: 2
    Last Post: 11-21-2009, 11:16 AM
  5. Missing pc and Ladder files for the Hitachi seiki hicell ca 20
    By Rinus in forum CNC Machining Centers
    Replies: 0
    Last Post: 09-19-2008, 03:45 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •