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kratmel

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Everything posted by kratmel

  1. One of possible way - assign some ON touch hidden key (or keys) on screen (small, flat and the same color as the display) - this key or many key's (named "SET touch prop flag" for one touch). Control Room operator must touch it before use some touch element. If touch element activated - "SET touch prop flag" RESET. local operator can only watch the PLC screen - it cannot see the mouse cursor. If one hidden combination password entered ( more than 3 different hidden touch - like temporary password) - Control Room operator give to the local some time (by timer)
  2. Thanks for the good tips Joe, Aus . I did some testing on the above problem. The main thing that I understood - in fact, I can not get a new coordinate faster than completing the read data from the servo. I laid this principle as a basis and I managed to determine the direction of travel without interrupt. Given that the direction is 1 bit, changing it to 1 or 0 is the extreme point of movement up or down, respectively. This method gives a stop error for the time of the drive deceleration. However, it does not actually affect the process. I tried to refuse automatic up-and-down motion control from the servo. However, PLC control over the network was unstable. Reaching a predetermined stopping point, the servo via the network announced that the target coordinate had been reached. After that PLC send command for the new movement. This method gives a good result in stopping and managing the process. However I couldn't figure out why but the normal cyclic up-down movement controlled by PLC via CANopen didn't last long and must to be restarted again. Now I'm trying to apply the Aus idea with a stop command ahead of time for an exact stop. I will report on the results later
  3. OPLC V1040 is used for control Lenze 8400 Highline servo drive. Position of vertically moved linear axis is measured by servo drive encoder and translated to the panel via CANopen. Drive use his own logic for continuous UP - DOWN move changeover. Now only START and STOP command sended to the drive via CANopen. AXIS is connected with 500kBps speed and moved with 0.8m/s max speed. I need to build programmed limit switch (PLS) for control machine valves depending of axis position. It must be switched separately. PLS in UP and DOWN move is different. Now i have 32bit absolute axis position copied to the ML. Problems: 1) how to calculate the axis moving direction by data manipulation with ML; 2) how to STOP axis as much as posible close to the UP or DOWN end position using only ML data and sended via CANopen "stop" command. Any ideas?
  4. Maybe use images for animation is as large as can be for SAMBA 7 But you must make some ladder for image manipulation.
  5. You should also mention the different types of USB to RS232 adapters, choosing the right driver for them, and applying the "unnatural" power for some interfaces (like Jazz PRG) from the transmission lines. Galvanic isolation for the adapters, the quality and length of the cables. So still on the shelf I have from DOS3.0, DOS 5.0, DOS 6.22, Win95, Win98 computers with hardware RS232 and the correct Standard. Big Box with different connection cables and adapters also present. And it is not museum :).
  6. We have an oven with two heating zones 45+45kW. The zones are not isolated from each other. Accordingly, in both zones, we must obtain the same 200 + -3 degrees C temperature. The project was implemented on the SAMBA PLC which supports two PID loop. Question: Is it possible to auto-tune both PID at the same time (on Sambа)? Maybe someone has experience - simultaneous start autotuning two or more PID loop. I can start both channels separately (but I'm not sure - is it settings will be correct if one heating channel is used for the entire volume of the oven). However, the heating time of the oven with two groups of heaters (two channel) is more than 3 hours and the full cooling reaches 24 hours.
  7. I use USB to RS485 isolated, work fine. https://www.ebay.com/itm/Industrial-USB-to-RS485-Converter-Magnetically-Isolated-FT232-ADM2587/163780212831?hash=item26220fb85f:g:T8cAAOSw9N1VlBRx
  8. Hi, SB58 system bit disable remote access. (J20 only). Please check this bit. Try to remove battery for some time. Maybe it is not usefull. But i found the same problem in vision - SB314 bit block plc access.
  9. V200-18-E6B offer isolated analog outputs but you must use separated power supply for this output or use VFD +24V power. Maybe this is useful for you. Plase find my link to pdf.
  10. Is it n/p input on jazz setup corectly? Please see in installation manual.
  11. Please post what is changed - V430 or weight controller? What indicator on V430 or on weight controller is damaged. ???? If indicator on V430 is damaged, maybe you may get it from new V430 and install to the damaged device. No programming is needed in this case.
  12. You will need to analyze the PLC's wiring diagram and, if possible, divide it to identify the cause of the problem. For this I use a battery connection and try to operate the control without a power supply. If this does not help to identify the cause, I try to isolate all the circuits using isolating devices (relay, optocoupler isolator). Usually the cause is interference that can be removed with the help of ferrite rings on wires, RC links for AC and diodes for DC on inductances that were forgotten during installation. In my opinion, the problem is not the power. It is noise from some device in ON-OFF-ON condition.
  13. I found one isue with ! Start-Up Display. If user try to delete default ! Start-Up Display rename it and (or) create another display with ! Start-Up Display name or use another Startup display something like this will happen. Please try to start new project and place startup dispay content to default ! Start-Up Display. Then try to use your ladder.
  14. I use china CH340 USB-to-serial converter with all RS232 device - work fine with WIN10. But probably a lack of communication is not related to the driver or adapter type. You must read MJ20-PRG manual http://support.elmark.com.pl/unitronics/PDF/M9091JAZZ/Jazz Add-on Modules/JZ-PRG_INSTL-GUIDE_01-06.pdf and check voltage on 1 and 6 RS232 power* pin. to GND 2 or 5 pin. Power from USB-to-serial converter may not be sufficient for the MJ20-PRG adapter to function properly. Maybe external +12V power supply needed. Please see app note about this connection. 68Ohm 1W resistor needed.
  15. I found that issue present on Win XP computer with 9.8.65 Visilogic that i must use on site. I was not allowed to use my computer for this job and I had to install 9.8.65 on a computer that used to collect data (old Win XP machine) . I returned to my Win 7 and all selected String is visible. Thanks to @Ausman
  16. Visilogic software provide String Library option. Now i must to do some changes to one of my project (used 9.8.65 Visilogic version). When i try to use Library String Selector i see and must to find down scroll button by mouse....(see arrow on pic). Only after that i see a string that i must to change. Yes, i can use Enter on keyboard or Edit String button on screen, but i do not see what String is edited Quastion: Is it possible to make selected string visible after "String Library - Choose String" window appear? I tried to enlarge the window but its size is not saved and the next time I use it, I need to look for the selected String again. P.S. This may be a minor issue, but with a large number of captions to edit, I keep making mistakes when editing and it takes extra time. Especially when working on a site with a computer without an external mouse
  17. Maybe you must try to replace Ethernet card or try to reinstall present card.
  18. Please try to see P1.08=0 P1.09---P1.12 I'm installed application with high inertia and 3sec stop time (DECC =2.5sec, and DC-Braking 0.5sec) --working fine. Must use Braking resistor connected to VFD. P/S From manual... Remove the yellow warning labels of PB, (+) and (-) on the terminals before connecting the braking resistor; otherwise, poor connection may occur
  19. What type of input: npn or pnp is used? Is it n/p pin connected acording to the manual? It is the 4, 6 status led - it must show the input pulse on/off. Where is connected 5,7 pin?
  20. I recently met with a PLC that had a power supply with supercapacitors UPS to keep it running when the power went out. Like this: https://www.neousys-tech.com/Resource/Product_Document/PB-9250J-SA/pb-9250j-sa-industrial-intelligent-supercapacitor-power-backup-ups-module.pdf?20190523
  21. One of the app note http://apps.geindustrial.com/publibrary/checkout/AN18-001?TNR=Application and Technical|AN18-001|PDF&filename=AN18_001_Connecting power supplies in parallel.pdf Sample https://www.power-supplies-australia.com.au/blog/connecting-mean-well-power-supplies-parallel
  22. Second one is universal Bluetooth access point with standard classic 2.1 and 4.0 mode.
  23. this is maybe industrial https://www.anybus.com/docs/librariesprovider7/default-document-library/brochures-datasheets/anybus-wireless-bridge-serial---datasheet.pdf?sfvrsn=2 or https://www.anybus.com/docs/librariesprovider7/default-document-library/brochures-datasheets/Anybus-Wireless-Bridge-II.pdf
  24. find doc in french http://www.pl-systems.fr/wa_files/bluetoothinstallation_022016.pdf but no com module with BT on Unitronics site :(
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