Ron_S

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About Ron_S

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  1. An unusual tale, but in these times of isolation and no work, I'll tell it. A few years back I went to a machine with an FX2n 64 MR controlling  (for want of a better description) a sewing machine. I uploaded the program and saved it before I started on the fault finding. The nice programmer (or so I thought) had saved the comments in the plc too, so it made my job a lot easier. I found the fault - a proxy that lit but gave no output so it turned out a nice easy job with lots of kudos from the customer. I stayed a while and watched this great sewing machine. It had 4 sewing heads that moved in and out of each others space with great timing.   A few years pass with me never going again and they phone me. The transformer has overheated and killed the plc. They have replaced the transformer but the plc was dead. They have also bought a second hand FX2n 64 MR from ebay and swapped that out They thought it was a part you just replaced and everything would be fine.   I explained that the program has to go back in and I might possibly still have it on an old laptop. I searched my files and I did have it, so I set off to another simple job.......not.   I put the basic program back in and it wouldn't work and was doing unusual things. The sewing heads were jumping and solenoids were firing on and off and all manner of things. Looking at the program, there were about 200 data registers (timers, counters, maths etc) But, and I mean but - there was no reference to these data registers apart from where they were in the logic By this I mean, there were no lines like MOV K3 D100. I wrote some dummy logic using MOV's and could see they were all at zero..... The programmer must have punched the values in one by one using 'set device' I could see no reason for this until I realised that because he had used a lot of memory on the comments file, there was hardly any memory left for the program (strange eh) He didn't have the space to put all the MOV instructions or he would lose the comments    Luckily, my routine when first uploading a program is to save it with everything including data values and then re-upload a new copy of the program to work on. I had the data files saved and put them in and all was well.   What a funny way to program.        
  2. Idle or throttle position relearn Procedure?

    Fat chance I'm clicking that.......geddit?
  3. unic0rn Click the default button, FX1n should be 8000   nonito: You have to buy it.
  4. driver comm error on Eseries HMI

    Are you getting any BDTP errors on any screens. When one HMI loses communication, the error shows on the screen. Are the ethernet green lights flickering even when the screen is frozen? Clean the contacts on all the rj45 plugs and sockets.
  5. How to fix no power on fx1s-14mr

    I came across an FX0n that actually had no wires in the 240V ac power terminals and yet the inputs and outputs were working.??? On further investigation there was a separate 24V dc supply unit that was connected to the 24 and 0v terminals of the plc.  It had worked like this for years. I don't know if the internal 24V dc had failed at some time or it was done from the start - but it worked. Try this method, it will likely spring back to life.
  6. GX Developer/FX2 Problems

    In that case, I would re-install GX developer from scratch too, including Melsoft environment first. maybe some was corrupted.
  7. Converting CPU Types

    In GX works use 'change plc type'   It will walk you through the process
  8. Mitsubishi E1043 data download

    Probably wrong cable.... Think you need a CAB 9
  9. You need to explain in more detail. And plc type.
  10. Probably sorted it after 4 years
  11. Copy and pasting GX Works 2

    Which plc model D8002 is a reserved register in fx models
  12. Mitsubishi plc communication error

    Sc09 cable? Correct com port? More information. We are not magicians.
  13. GX works 2 - GX Developer

    Thanks Gambit. I don't know what I'll find then - but I will install GX2 anyway :( If it's protected, it will be a start from scratch program then.   I've used GXW2 on plc's GXDEV didn't cover but I just didn't get along with it. I know if I spend time learning it, I will but I know GXDEV inside out and if I can use that, I will. :)
  14. GX works 2 - GX Developer

    Just a quicky I have to go to an abandoned job tomorrow. By abandoned, I mean the suppliers of a new control system delivered the finished panel 6 months ago and for whatever reason have never come back I have been asked to complete it. They have sent me photos and not a wire is connected to the panel and the PLC is an FX 3u I had a thought, what if it was programmed with GX works 2. At the moment, I only have GX Developer on my main laptop (I have GX Works 2)  Will a program in the PLC programmed in GXW2 be able to be uploaded with GX DEV. I don't have a spare plc to test but want to avoid installing it tonight if possible.   Has anyone tried this?          
  15. Fx3u io slow response to activate valve

    I would be looking at the valves and possibly air pressure if that is what is going through them.