dunc

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About dunc

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  1. profinet to mitsubishi A-series?

    thanks for the feedback. the PCS7 system is supplied via an OEM, so info is minimal at the moment. i haven't yet been allowed to see any of the hardware to see what is what. we could probably add profibus to the Siemens system, but again, the  A1SJ71PB92D Mitsubishi card is discontinued so wouldn't want to go that route. the existing communication to the SCADA from the Mitsubishi PLC is via a separate card (A1SJ71C24-R4). there is another separate card which talks directly to an HMI. if we want to do any maintenance on that PLC we can connect using an Sc-09 cable directly into the CPU. as the 422 cards on the PLC are a slave, turning off the HMI or SCADA would yield the same issue as using the existing SCADA and an OPC connection. i appreciate i could get fancy with the 422 protocol and run multi master, but i feel that is a bit specialist and outside my skillset in the short timescale we have to get the project live.   OPC is looking like the best option at present, but if anyone else has anything that springs to mind, then fire away!
  2. profinet to mitsubishi A-series?

    as the 422 connection between the SCADA and existing A-series mitsubishi PLCs has the SCADA as the master, this means adding another slave into the system and converting the signals to profinet is still going to end up with me needing the SCADA on to control the data flow? if i was to do that i may as well go with an OPC. the Aseries mitsubishi hardware was discontinued a good 10+ years ago. you can get some input, output and power supply cards new still, but anything like comms cards and CPU's are getting hard/impossible to get new now. the last time i had to get a few spares, our supplier had to go to a third party warrantied used spare supplier. i would like to stay away from going that route if possible.   i have attached a diagram of what i have and what i want to achieve:  i was just wondering if there is any other options i have missed?   Drawing1.pdf
  3. i have been dumped an unfinished project with no budget left and i have been tasked to find a way to connect a new Siemens PCS7 system with profinet to 2-3 existing A-series mitsubishi systems. we have limited I/O availability on the mitsubishi side, so i dont think an old school direct multicore connection is going to be viable.   the A series is connected to a SCADA system, so an OPC is an option, but turning the SCADA PC off would then stop the new process.   what options can people suggest that isnt going to require buying discontinued parts off ebay?
  4. i have been dumped an unfinished project with no budget left and i have been tasked to find a way to connect a new Siemens PCS7 system with profinet to 2-3 existing A-series mitsubishi systems. we have limited I/O availability on the mitsubishi side, so i dont think an old school direct multicore connection is going to be viable.   the A series is connected to a SCADA system, so an OPC is an option, but turning the SCADA PC off would then stop the new process.   what options can people suggest that isnt going to require buying discontinued parts off ebay?
  5. driver comm error on Eseries HMI

    anyone have any ideas or suggestions for this please???
  6. we have an issue on an old system which the operators keep complaining about. ive done as much as i can without spending any money, and no money is available. we have an A series PLC A1SJ71UC24 talking to an E1060 HMI via serial. the E1060 then connects via an ethernet switch to 3 other E1060 HMIs via the BDTP protocol. in general it works ok, it is slow, but usable for the speed of the process. we do get intermittent issues with communications with the HMis on the BDTP side of things which we cant seem to solve! operators keep moaning about it freezing etc, but i am at a loss as to what to do?   does anyone have any ideas that cost next to nothing to implement? im out of ideas!
  7. SCADA to PLC tags???

    Hi thanks for bearing with me. im slowly understanding how it works. found D2900 which is written at every motor program section. the +11 is the indirect number i assume? so this instruction moves '11' into d2900, then the subroutine runs which i posted up before? could someone try and explain in simple terms how this works please?
  8. SCADA to PLC tags???

    please see attached. this is a printout of the entire motor control subroutine. any guidance would be much appreciated. plcinfo.xps thanks
  9. SCADA to PLC tags???

    this is an instruction that shows some relationship between D2900 and D2600. i am really struggling to get my head round it!?   i tried looking up indirect addressing in omron and found this post, which is informative, but is different to what is being done in this piece of software: http://misrautomation.blogspot.com/2010/02/indirect-addressing-in-plc.html im sure it will just click when i understand it, im really struggling to get it at the moment, sorry :(
  10. SCADA to PLC tags???

    Thanks for the reply. ok, so that kinda makes a bit of sense. is the @no2 in the example the pointer for the indirect addressing?
  11. SCADA to PLC tags???

    we have a system with an Omron SCADA and Omron PLC. most things i can work with fine and muddle my way through, however the drive status is confusing me a bit. i have worked my way so far, but am struggling to work out how it all goes together. in simple terms i am trying to find an alarm bit specified in the SCADA as I[4]. from what i can tell at the SCADA end, this is D2604 in the PLC. D2604 isnt a specified tag in the PLC, but if i monitor it, it is doing what i am expecting it to do. i had a look through and found some vague reference to that register in a program in the PLC, i have attached the section which is to do with the alarms. this pointed me in the direction of H99 which seems to be a structured dataset? could someone explain to me in the simplest terms possible how an alarm goes from the H99.04 to D2604? if you need any more screenshots or info, let me know.   many thanks
  12. Simple Project vs Structured Project

    im not sure about FX, but on Q series if you upload the symbols information to the PLC then you can download it all back without losing anything. the only issue is that it takes a lot of memory up in the CPU so isnt normally worth it :(
  13. BEIJER E1101 TO MITSUBISHI GOT 2710

    i was lucky enough to be given a copy of the conversion tool for this from a mitsubishi rep. it converts certain E series projects to a GOT1000 project. you can then convert this to a GOT2000 project. it is very hit and miss though and takes a lot of fiddling about to get it to work properly. depending on the size of the project, its sometimes easier to just start again.
  14. A2AS to E700 comms issue?

    i was initially using a  GT01-C30R4-25P(3m) cable and it doesn't work on this CPU, but works fine on our spare one of the same type. all the settings our correct. i can only connect to this CPU using a genuine SC-09 cable with the programming software. nothing else works.
  15. A2AS to E700 comms issue?

    done a bit more testing today; the spare CPU works fine in all situations. the existing one will communicate with the E700 fine. it will also communicate with the PC using GX developer using a genuine sc-09 lead. however, if i use a non-genuine sc-09 lead, it no longer communicates??? the spare cpu works with the non-genuine lead. i popped the case of the CPU and couldn't see anything obvious. it all looked pretty good. i have tried a format (clear plc memory) and this made no difference. i even tried just making up a small 5 line program for testing and it still didnt work. i am just using the 485 port in the front of the CPU for comms as that is the only option available on this CPU.