dunc

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Posts posted by dunc


  1. had a go using the server/client gateway function and it was a bit of a pain to setup and doesn't really seem suitable for transferring all data between multiple clients.

     

    does anyone know of any other way of achieving this? i am surprised there isnt a BDTP equivalent on the GOT????


  2. i have had a similar issue with a connection to a Qseries. it turned out to be a poorly terminated RJ45 connection. it was remade and it has been fine since.

    was a similar issue to yours apart from i could still communicate via a laptop with the GX developer software to try and fault find.


  3. we are looking to replace a network of E1000 HMIs which connect to a mitsubishi A series over serial.

    the serial connection is between the PLC and a server E1000. the server then connects to 3 other HMIs using the BDTP protocol over ethernet.

     

    we want to replace the HMIs with GOT2000 using the same communication infrastructure. what options do we have for replicating the BDTP setup we currently use on the GOT? i found the gateway client/server, but this appears to need specification of what bits and words are being sent? is there any way of doing it which simply allows everything to be read and written too without overhauling the entire code?

    thanks


  4. 1 hour ago, Gambit said:

    This screen capture is from the connection part. Now the first one is host (1-1) and de second is network 1 station 2.

    When you got to the device data transfer. and you ay source device click on the ... button. you can then select a device from the host station or you can select other and select network 1 station 2

     

    thankyou. didnt spot that to begin with!

    all working ok. i am tempted to use both HMIs for redundancy. this makes it a little more robust than just relying on 1 HMI to pass communications.

     

    thanks again


  5. 1 hour ago, Gambit said:

    Not ideal i agree but possible with the hardware you now have.

    Just connect one of the GT21's to both ADP's

    The transfer setting are easy

    thanks for the advice.

    the transfer settings seem a bit too easy, but im confused as to how it knows where the data is coming from and going too? i have looked through the e-manual and it doesnt once mention how you define which PLC the data is coming from and going too?
    i can only assume you just setup 2 connections and the host is then the source and the other is the destination?

    Capture.JPG.9ec18aa5b8470a84f615bd606958

     

     


  6. it doesn't necessarily work exactly like an ADP as it is built in rather than a separate board, i was hoping that as it can communicate with external equipment, it would be able to communicate to another FX? i was hoping it would be similar to the FX5 as you can communicate between PLCs with that quite easily.

    yes, both HMIs are a GOT. albeit a very basic GT21.

    i will have a look at that function on the HMI and see if that will work. its not really ideal though.


  7. I have 2 FX3GE with built in ethernet.

    i have got communication with each PLC working with the local HMIs and the SCADA systems fine, but i am struggling to find out how to set up communication between the 2 PLCs directly.

    i have found reference to the built in ethernet working like the fx3u-enet-adp, but there is little info on how to actually program this to communicate between 2 PLCs.

     

    can anyone help me out with this, or point me in the direction of a manual that explains it simply?

     


  8. 18 hours ago, BobLfoot said:

    Do you have only this PLC or many others in your purview?

    Do you already have a Historian or Scada Package you are using elsewhere?  The reason I mention this is most of the big players {Wonderware, OSISOFT PI, Ignition, Cimplicity, etc.} make drivers for pulling data from SIemens.  

    Keep in mind that once your business people see data from the Siemens, they be like "Hey one PLC is giving us data , why aren't they all?"

    Brace yourself for the exponential demand for data, is all I'm saying!

    we have lots of others, mostly mitsubishi. we have used kepware OPC in the past to pull data from other manufacturers as our site SCADA package doesnt have a native Siemens communication driver.

    in this instance, this is the only system that isnt on a system that we can easily connect to remotely without interfering with the process. the rest can be remotely interrogated for historic information.


  9. On 26/08/2021 at 5:35 PM, Ken Moore said:

    Contact your Siemens person. Siemens has webserver package (Called Web Navigator), that you can setup via a firewall on a stand alone machine and allow your business people to view the process. Our business users have read only access.

    Siemens also has a historian and information server package that can use historical data to produce reports and such.

     

    thanks for the reply.

     

    we dot really have a siemens person to talk too. the system was just thrown in by an OEM and now it is my issue. I dont have much experience with Siemens, but im learning slowly.

     

    i will have a look into both your suggestions and see which suits them the best. im sure when they see the price they will decide not to worry about it ;)


  10. what options are there for remote access to a PCS7 system to view trend information?

    we have a manager who wants to look at interrogating trends on the system, but the process is running 24/7 so it is not really suitable to do on the main system or even via the likes of VNC or teamviewer.

    what other options are there for being able to look at this information and have a view only access to the control screens? we don't want there to be any way that the manager could accidentally click anything on the running system to affect it.


  11. we have recently had a PCS7 system installed.

    on the win-cc SCADA secondary screen there is a box that pops up that gets in the way of one of the selection buttons. we cannot seem to remove it!?

    any idea what it is or how to get rid of it? we never see this on the main development system? the integrator said he would look into it, but doesn't seem that forthcoming.

     

    any assistance would be great.

    thanks

     

     

    Capture.JPG


  12. what software is required to program a PCS7 system?

    this may be a really stupid question, but i cant seem to find a definitive answer from google searches etc. if i search for any PCS7 specific programming software, i cant see anywhere in which to purchase it from either?

    TIA portal sounds very similar to how i understand the PCS7 system architecture is setup with 1 piece of software integrating everything between the PLC and HMI/SCADA. TIA portal lists all the hardware devices as used in the PCS7 system we have installed.

    i am mostly used to Mitsubishi, so the Siemens stuff is a little alien to me, so i apologise in advance if there is an obvious answer i have overlooked!


  13. 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!


  14. 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


  15. 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?


  16. 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?


  17. 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!


  18. 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?

    Capture.JPG.ca0809bcc89f38cb809e8979c829

    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?


  19. this is an instruction that shows some relationship between D2900 and D2600. i am really struggling to get my head round it!?

    Capture.JPG.71fba5abe415b45a41a59477e28d

     

    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 :(

    1 person likes this

  20. 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.
    5d9366f1b6275_scadatag.JPG.2c59ba9da5fdf

    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?
    5d936708a20e9_plccode1.JPG.24e10227ad464
    5d93671518915_plccode2.JPG.bcc65f2c3e63b

    5d93671a449b0_plctags.JPG.308e6d8e9a3a41

    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