mmd604

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Posts posted by mmd604

  1. Posted

    On 2021-10-01 at 5:14 PM, larry818 said:

    Hi All,

    I'm looking for a vpn device that I can mail to a client, have them pop their sim card in it or connect it to wifi, and it'll allow me to connect via ethernet to their plc, etc...

    I'm thinking something like the Phoenix mGuard, but I have no experience with that and don't know if it's any good.

    Anyone done this?

    Thanks, Larry

    I would look into the Wireguard VPN for what you are trying to do.  I have a server setup on a VPS and all I do is send the user a config file.  They download and install wireguard and then add my config file and then mine and his computer is linked via my own wireguard private network. 

  2. Posted · Edited by mmd604

    Looking for a opinions I am currently working in facility that wants to upgrade there current plcs.  currently we have 2 models the a1scpu and fx3u-64m.   The programming is rock solid so I do want to change anything I am just looking for some more modern plcs with ethernet. so we can set up some line control.  I am using GX to interface and with these plcs.  Any opinions would be much appreciated.

  4. Posted

    your correct its Windows CE the message on the screen is desktop at 19200 status hide or cancel.  I have no option to view runtime.  The screen programming was done done by the machine manufactor and the start button has a question mark which leads me to believe he didnt define the tags properly. We are pretty much screwed until Monday morning in my opinion but thanks for all your help and if you have any ideas I am alway willing to try thanks again

  5. Posted

    Hello and good day today I changed a old GE Fanuc quickpanel and put in a new Emerson screen because the old screen wasnt bright enough.  Every HMI tag and status works on the new screen but one start button.  So I put the old screen back in and it just gets stuck at the windows 2000 start menu and doesnt not communicate over rs485 with the plc ge fanuc versamax.  I point to pointed the cable and it checks out but it wont communicate with the plc anymore very wierd any ideas?

  6. Posted · Edited by mmd604

    I am curious I have a question I was looking at a program and the inputs and outputs  each had theyre own subroutine and the input subroutine had the inputs on one subroutine connected to a alias tag and then the outputs had the same the alias connected to the outputs.  What is the benefit if any to doing this?

  8. Posted

    I have a INT between two control systems.  The destination is a allen bradley plc.  I am running studio 5000.  The INT  indicates current step in sequence.  I have made a HMI screen in Factory talk studio.   I want to creat a text message on the hmi screen to indicate which step in the sequence.  This will require text for each step for indication for our operations.   How do I go about doing this in Factory talk ie 1=" down aspiration" 2 ="up aspiration" etc

  9. Posted

    On 7/23/2021 at 6:57 AM, pturmel said:

    Is this the Mynah VIM card?  I ran across that once:  it emulates an I/O chassis to place in the Logix PLC's I/O tree.  Chances are, the I/O buffer in the Logix processor needs to have its assembly length changed.  Or possibly not needed, if the buffer has unallocated boolean space.  Can you share more details of your application?

    It is a VIM we have moved on as we had spare integers that we utilized as bool as we are a live facility and even Spartan was not comfortable downloading the VIM.   Essentially we have DeltaV handling our process and Allen Bradley handling are high speed stuff.  I have no idea what a IO buffer is but I will look it up thank you. In the future I will be configuring a simulation between DeltaV simulator and Emulate5000 smulator so that should be interesting and answer all my questions about the configuration side  Allen Bradley and DeltaV

  11. Posted

    5 hours ago, BobLfoot said:

    Explicit Message means you will find an MSG Instruction somewhere in your logic.

    The Communication Path of the MSG will point to the DeltaV by IP Address.

    So I cant find any MSG instructions in the logic.  Theres a network module in the network tree that indicates DCS communication but the ip is pointed at that a IP that would not communicate on the vlan that the vim in located.  I can post the project file but its 5.7mb so I would have to compress

  18. Posted

    So i am linking one plc and hmi on range 10.0.41. to another plc and hmi on range  192.168.0. I want to put the plc 192.168.0.2 and hmi 192.168.0.3 on range 10.0.41.  When I make this change I would change IP in terminal settings on the hmi and change IP on plc via Studio5000. Also would I have to change anything in the Runtime file because I am using tags from the PLC.   The file uploaded from hmi is .cha instead of .mer.  How do i convert the file so I can edit the hmi like I would be able to in application manager. 

  19. Posted

    19 hours ago, BobLfoot said:

    The recent Solarwinds/Orion Debacle got me to thinking about security and "best practices" once again.  I seem to recall Rockwell publishing something some time ago, perhaps during the Stuxnet Fiasco about it being most secure to leave your PLC Keyswitch in RUN position and only go to REM when you're actually editing online.  One company I worked for made this standard practice and we actually had to have a maintenance electrician move the keyswitch when an engineer needed to make an edit.  We also had a Wonderware "crawler" Script that checked all keyswitches and send a status email out nightly.  Anyone else encountered this sort of security forethought or have comments , ideas or suggestions on it?

    We have no machines connected to the internet on are process network and we port forward instead of opening ports.  You can protect against script kiddies but a good hacker good luck with that.

  25. Posted

    I am curious as deltav is the only dcs system I have worked on.  Do most dcs systems charge for use of input and outputs I find this outrageous