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AlexUT

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Posts posted by AlexUT

  1. I may add to what @DanT say - USB cable should be certified for USB 2.0.

    USB cables, supplied by Unitronics, are carefully tested, and tests include download of large projects, taking near 30 min or more, long test in online mode, and other tests.

    Other cables may have NOT SCHIELDED, BAD SCHIELD, NOT TWISTED USB wires.

    So if there are EMI or Ground Loop between PC/Laptop and PLC/Cabinet, you may face communication disconnects.

    If you are working with Laptop - check if disconnecting power supply improve communication.

     

  2. There is working Unitronics solution with Unitronics Router UCR-ST-B8.

    Jazz PLC connecting to Router's RS232 port.

    After additional Router configuration Jazz PLC may be used as an external MODBUS RTU device in UniCloud.

    Open link https://www.unitronicsplc.com/support-technical-library/

    Scroll to Accessories->Routers

    https://www.unitronicsplc.com/wp-content/uploads/2020/06/UCR-ST-B8_INSTAL_GUIDE_DOC01004_A9_06-20-1.pdf

    https://www.unitronicsplc.com/wp-content/uploads/2020/07/QSG-UCR-ST-B8-EU-v1.0-web.pdf

    https://www.unitronicsplc.com/Documents/UniStream/Accesories/UCR/UCR_USER_GUIDE.pdf

    Unitronics use proprietary Firmware to support UniCloud.

    UniCloud link:

    https://unitronics.cloud/

     

  3. I will suggest to close project without saving it (to not store corrupted data),

    Close VisiLogic.

    Reboot computer.

    Run VisiLogic installation file (unblocked!!!) and select Repair Installation.

    Run and test again.

    In my case Laptop got BSOD as result of SSD Bad Block (which being replaced during Laptop reboot), 

    Sometime VisiLogic Uninstall than install required.

    Hope this helps to fix problem.

    In case of project error attempt to restore it from "Project->Restore".

     

  4. Many of new Windows 11 computers have this problem

    1. Open command prompt as Administrator.

    2. Add keyr:

    REG ADD "HKLM\SYSTEM\CurrentControlSet\Services\stornvme\Parameters\Device" /v "ForcedPhysicalSectorSizeInBytes" /t   REG_MULTI_SZ 3. Validate that key properly added:

    REG QUERY "HKLM\SYSTEM\CurrentControlSet\Services\stornvme\Parameters\Device" /v "ForcedPhysicalSectorSizeInBytes"

     

     

  5. 1. Battery back-ups Retained Tags.

    2. If SD card used - eject it and check if PLC resets or not.

    3. Prepare new backup battery CR2032 and replace it.

    4. You have to check battery status in Ladder by use of following bits:

    image.png

    5. When bit "Battery Low" is up - Customer have to replace battery in number of days to eliminate loosing retained tags.

    6. Minimum battery voltage is 2.8V.

    7. Battery life is dependent of number of conditions - temperature, humidity, amount of time when PLC is off (this is a time when battery is supplying power to retained memory).

     

  6. 5 hours ago, Parrey said:

    The unit is showing system fault. Power in failure.

     

    1. "unit is showing system fault" - How fault looks?

    2. "Power in failure" - How failure looks? Is this related to p. 1?

    Pictures, text, more explanation...

    3. When this fault happens?

    4. Is this setup new or old?

    5. Being this setup working before?

    6. How problem started?

    Details, details, details...

     

     

  7. After defining PLC model, click on "Uni-I/O & Uni-COM" in "Solution Explorer":

    image.png

    In "Properties Window->HS Input 0" click on 3 dots at right side:

    image.png"

    Configuration window pop-ups:

    image.png

    Click on "Interface" and select "Quadrature (A/B)":

    image.png

    Choise required parameters, load project to PLC, connect encoder and test.

    In "On board I/O" you can find required tags:

    image.png

    Enjoy!

  8. Hello all,

    - Scan time is not precise.

    - Timer is not precise.

    - Quarz in PLC is not precise.

    Nothing is precise...

    Especially when PLC internal temperature is changed and dependent of:

    - Season;

    - Day/night temperature variation;

    - PLC load variation;

    - etc.

    Additional to Interrupts you can use following existing incrementing counters:

    image.png

    As well, you can use "RTC to UTC" and calculate difference in seconds. *Has RTC precision, not PLC Quartz precision. 1 sec step.

    .

    If quartz precision is "low" for you - use time correction by use of Time Servers. *1 sec precision.

     

    If you require mich more precision - may be you have to use Cesium clock, which will add an additional price to project, as it require an additional interface as well.

    Summary:

    Be realistic in your requirements.

     

  9. If a Tx LED of USB to Serial converter lights but Rx not - I am pretty sure in one of 2 things:

    1. Rx/Tx wires may be swapped.

    ! Unitronics supply 4 and 6 wires cables crimped as 1-6, 2-5, 3-4, 4-3, 5-2, 6-1.

    If you by mistake use regular phone cable, it may have the same gray color, but crimped 1-1, 2-2,... etc.

    Or used cable may have 2 wires.

    Or crimping is not good - bad contact.

     

    I recommend to check the same adapter-cable-etc. at other PLC to be sure it works as a kit, than return to V280.

    If PLC is pre-programmed - COM ports may be initialized for other communication parameters and may be in use.

    1. Power-on PLC when pressing I button.

    PLC will start in STOP mode.

    2.Check communication.

     

    For USB to Serial adapter COM port:

    image.png

     

    image.png

    At next picture should be information about driver for your USB to Serial adapter:

    image.png

    In Device Manager select "Menu->View->Show hidden devices" and check that:

    1. COM port you use is not assigned for other device.

    2. COM port number is in range 1-16.

     

     

     

  10. 192.168.

    192.168.50.208 may be a default gateway.

    1. Run from DOS prompt "ipconfig /all" and look in list for 192.168.50.208.

    2. It may be a Proxy Server, set by company's configuration.

    Enter "Proxy" in search box and press ENTER.

    Check if any Proxy settings are enabled.

    Probably you may see 192.168.50.208 as a Proxy.

    Disable Proxy and check ping again.

    3. In DOS prompt enter "tracert 192.168.50.208 and press ENTER.

    *It works slow.

    4. You can ping 192.168.50.208 if you are at company network.

    It may answer you if exists and if ping reply enabled for this IP by IT.

    Summary (not full list):

    Proxy, Firewall, VPNs, AntiVirus/AntiSpam and other security applications, running by IT.

    . Sometime helps if you reboot your computer.

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