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Gabriel Franco

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Everything posted by Gabriel Franco

  1. Gabriel Franco
    take a look to this topic:
  2. Gabriel Franco
    Why 9600, 8, n, 2? It isn´t usual. I suggest you to double check COMM INIT and Modbus Config blocks to match VFD parameters (baudrate, data and stop bits, address).
  3. Gabriel Franco
    After you switch cooling/heating bit, you need to re-configure PID.
  4. Gabriel Franco
    Or simply use three different tags, one for each period, updating (SUM) them in each scan or in a base time. This way, you have instant values for all your periods. Of course, you will need to reset those tags at the right time (daily, weekly, monthly).
  5. Gabriel Franco
    Use LINEARIZATION FB. Keep in mind module resolution is 0.1°C, that´s the reason X1 and X2 values are -2000 ... 6000 in the image
  6. Gabriel Franco
    You also cau use SB2 to call whatever display you want.
  7. Gabriel Franco
    Take a look to the module specs. It shows register values when analog input is out of range. https://myzone-kza3sadj.netdna-ssl.com/wp-content/uploads/2015/12/IO-ATC8.pdf
  8. Gabriel Franco
    I perform manual tuning when I have temperature process instead of auto tuning. I have better performance. In general, to reduce overshoot, decrease P, but all systems have their own behavior.
  9. Gabriel Franco
    I guess you´re using Remote Access software to show your Vision 130 and you believe it is a simulator. However keep in mind that all Unitronics software requires a physical PLC in order to view online data. There is not simulator.
  10. Gabriel Franco
    It would be nice to have an option to save VLP file including registers values
  11. Gabriel Franco
    I always use terminal resistors at both ends of an RS485 network, even in point-to-point short cables. Also, I use shielded cables ground at a single point. Rarely had problems with this.
  12. Gabriel Franco
    For settings, if those are saved as registers, you may use "Export PLC Operands to Text File" under Connection menu. I use to save operands file together with VLP and OS files as a full backup of my applications.
  13. Gabriel Franco
    Calibration data keeps on IO-LCx module.
  14. Gabriel Franco
    You are using direct contacts instead of coils for VALVE SET / VALVE RESET
  15. Gabriel Franco
    I suggest you to manually tune your PID system using any of well known methods, e.g. Ziegler-Nichols
  16. Gabriel Franco
    I suggest you to SET HMI_START_N2 using your button, and RESET it in logic, just after INC SYSTEM_STAGE_.... Then, do not need positive transition of HMI_START_N2
  17. Gabriel Franco
    It would be great to have a serial comm monitor in Unistream like in Vision. This tool is the first I use to check comms problems and let me check at HEX level.
  18. Gabriel Franco
    In Samba ther is not a direct way to link data tables to HMI. You must build from scratch and use pointers to show files and if your data table is too long, you must show pages individually.
  19. Gabriel Franco
    I see no problem with csv files other than spaces added. You are using MI62 twice in fields to add file. Why?. For debuging purposes, I suggest manually enable rung 41, instead of SB13. Keep in mind that, SD operations may take a while and trying to add a new record every second may not be possible. You may try also numeric field for all those numeric values, instead of indirect text.
  20. Gabriel Franco
    I suggest to check CSV file using a text editor. It could be a separator and regional settings issue
  21. Gabriel Franco
    I´ve used mass flowmeters with Unitronics and other PLC brands. Usually I use analog 4...20 mA to measure flowrate and pulses to count/totalize or communications whenever is possible. Some of them have active outputs and others passive like any other instrument.
  22. Gabriel Franco
    To discard any hardware issue, I would check behaviour of any (or all) operand value after restarting power considering that, operand values are also battery supported.
  23. Gabriel Franco
    I had similar problem once. After a week strugling with it, I decided to install a new Ethernet card and problem was gone. It may be a hardware failure .
  24. Gabriel Franco
    I´m not sure if this fits your needs:
  25. Gabriel Franco
    Usually I use same Refresh bit for all Text fields and then SET it in ladder once per second.
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