larry818

MrPLC Member
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Everything posted by larry818

  1. Floating license

    Just to follow up... "Borrow" seemed more trouble than it's worth, for a single user (mostly as my vendor has no idea what the "borrow" license is).  In the end, I just put the license on the laptop and just have to keep it turned on while I work on the desktop.
  2. Floating license

    Hi, I got the floating license so I could have copies on my desktop computer (for development) and the laptop (for installations). Is this possible?  The laptop won't have access to the office network when on sites. Thanks, Larry
  3. interger as a coil in codesys

    You should get a type mismatch error doing that. You can address a bit in an int and use it for coils: (int).00 = first bit, (int).01 = second bit.
  4. Floating license

    Hi Bob!  Thanks!
  5. Portable VPN

    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
  6. Portable VPN

    I've found some devices that connect via Amazon AWS.  A few can connect to the 'net via RJ45, Wifi, cell, or USB (for phone tethering).  I'll buy a couple of those and see how they work out...
  7. Portable VPN

    I've considered going the TeamViewer route as a last resort, and for this upcoming service it seems I'll have to go that way.  I'm not a big fan of TeamViewer, though, do you have an alternate favorite? Thanks!
  8. Old Medoc and a F1/F2 plc

    Use Medoc 2.40, it's a win32 text mode app.  Works fine with usb serial ports.
  9. Wago 750-881

    Set the dip switches back to the default.  If they are set to an address, the 881 will use it. Also, download the "Wago ethernet settings" utility.  It's a better way to set up the PLC.
  10. F940GOT firmware

    Well, since no one else answered this... As I recall (and this has been a while), I was using the SW2D5C software, and that included the OS, which may or may not be newer than the OS that shipped on the screen. When you download, there is an option to install the OS.
  11. Unbricking an FX3G

    Revisiting this, while these plcs look really clean inside, looking at them again under a powerful magnifier, I found corrosion everywhere. I suspect they got exposed to concentrated ammonia or chlorine gas. Thanks for your suggestions!
  12. Unbricking an FX3G

    Hi, I have two FX3G plcs that died in the same panel. One lasted about a year in service and died, so we replaced it with a new plc of the same vintage (the serial is only 5 apart), and it died in about a week. So, both PLCs power up ok, but run is off and the err light is flashing. They won't communicate via USB nor serial, so I can't connect to see what's up. Is there a way to unbrick these given that they don't respond on the comms ports? Thanks!
  13. Unbricking an FX3G

    So Cal
  14. Unbricking an FX3G

    That's another problem, my long-time local MEAU distributor is no longer an MEAU dist, and the new guys know nothing (and stock nothing). The MEAU tech support guy wanted me to send it to them, but I suspect that'd be a waste of the shipping fee.
  15. Unbricking an FX3G

    Yes, I tried switching to stop. Bear in mind that the code worked fine for a year and then it bricked. It's the same code I have running on a couple hundred installations, all with no problem. On site, it's connected to two FX2N-4DA modules, but those seem to be working. There's a third, new plc in place now that's working fine, no changed to code, config, nor wiring.
  16. Play Music with PLC? or what else?

    You could just use one of these with a PLC, cheap and easy to connect: https://www.gilderfluke.com/index.php?main_page=product_info&cPath=1_3&products_id=33&zenid=2i4daoque795uddppgbff8k8j187imo7
  17. Hi, I've got 8 enclosures in a smallish room and 7 of them will have 4 fans each, 500cfm each. So obviously noise will be an issue. Does anyone know what the quietest 508a friendly enclosure fan is? Thanks, Larry
  18. I don't see a better place to post this, so here goes... I have several RS485 runs going through underground conduits. The local inspector is demanding that we use UL Listed direct burial cable, which I'm not finding anywhere. I can find many cables that are 100Ω, but I have several long runs at the end that are the proper 120Ω cable, and I'm concerned with mixing impedances. Does anyone know of proper 120Ω RS485 (Can bus, DMX, etc...) direct burial cable that's listed? Thanks, Larry
  19. UL listed RS-485 burial cable

    Ok, if anyone ever needs to know this... it doesn't exist, but Belden can do a custom run, 5000' for $4,475.00, and it's UL listed.
  20. FX3GE / modbus

    Hi, I have a couple of questions that seem to have stumped the MEAU guys... 1) Can I use the ethernet port on the FX3GE for modbus TCP? 2) If so, can I use it for modbus and programming simultaneously? 3) If not, can I add the FX3U-ENET (I know you can have only one enet card, I suspect the onboard one counts) 4) Did MEAU lift the port 502 restriction on the FX3GE? (Why did they disallow the standard port? Why do they sell a FX3U-ENET-P502 to fix this, and why only in the EU?) Ok, more than a couple of questions, and one compound question... Thanks! Larry
  21. FX3GE / modbus

    Funny, I just checked with the IANA list of ports, and port 502 is officially the "modbus tcp" port.
  22. FX3GE / modbus

    Thanks Crossbow! I knew you'd know all the answers. So, when you say I have to use the -P502 to do both, I'm reading this to mean that I can't do both on the plain ENET module, even if I use another port?
  23. best way to code a simple sequencer

    What's your target platform? I came up with a 16bit wide sequencer that's simple code, and programmable by touchscreen. I did this on a Mitsubishi FX plc and F930 touchscreen.
  24. Hi, I've got two FX3G PLCs that I'm developing code for and I'd like to program them from the same PC (simultaneously, not by swapping files & cables). Both PLCs are connected by USB, and I'm using GX Developer 8.9 something. Is this even possible? The manual has diagrams that say both yes and no. Thanks, Larry
  25. Program 2 FX3G PLCs from one 'puter via usb?

    I guess that's what I'm asking. I have two plugged in now but nothing jumps out at me. I think I'll have to do one by serial.