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Eyal Koren

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Everything posted by Eyal Koren

  1. Eyal Koren

    Replace Allen Bradley

    For these requirements I would recommend the Vision V350-35-RA22. The short specs will be: 3.5" color touch screen (320X240 pixels). 8 DI 8 DO 2 AI 14 bit resolution, jumper selection between 0-10V/0-20mA/4-20mA 2 temperature measurement inputs (either PT100 or thermocouple) 2 AO 12 bit resolution, jumper selection between 0-10V/4-20mA Expansion port for adding I/O modules. Communication - one RS232/RS485 communication port. Optional communication modules available. For your convenience, please see the product page here, and a comparison table for the V350 here. I also referred your details to our branch in the US.
  2. Eyal Koren

    Replace Allen Bradley

    Hello Brian, Thank you for your post. Unitronics offers various products that supports your configuration, with the main feature being an "all in one" solution of PLC+HMI combined. Please write a detailed description of your system, including the following: 1. Number of I/O's - digital and analog ( with analog IO's please mention desired resolution in bits). 2. Desired Screen size and technology - There are several screen sizes available, from 3.5" to 12.1" (in the "Vision" series). Most models consist of a color touchscreen, some of them have combined touchscreen and physical buttons and some are non touchscreen. Please define your requirements. 3. Environmental requirements - IP class, temperature ranges etc. 4. Please state the country you are operating from. We can connect you with our local distributor. Best regards
  3. Hi, Thank you for bringing up this issue. I checked your complaint and you are right! Some topics are missing from this version of Visilogic help. I have referred this tom our technical writers department and this will be taken care of soon. In the meantime, please see the information you requested in the attached file. Timers.pdf
  4. Hi Dan, What the function does is as follows: 1. Wait for the currently SD command to finish. 2. After all currently activated read/write tasks are done, it does not allow further tasks to initiate. 3. A success bit will rise, indicates that You can safely remove the SD card without the risk of corrupting data.
  5. Eyal Koren

    historical data

    Hi Ronald, UniOPC Server is compliant with the OPC Foundation's Data Access Custom Interface Standards through to Version 3.00. Unfortunately, is does not support HDA. It is also not possible to read data directly from the SD card. One possible way to automate this process is as follows. 1. Create a subroutine on the PLC that will be initiated either periodically or by the SCADA. 2. In the subroutine, extract the data from a data table to a vector of MI's (using the "read row" or "read column" commands). 3. send the vector to the SCADA. If the vector is longer than 32 MI's, you will have to send it in chunks. It is not the most elegant solution, but it should work.
  6. Hi Dan, Unfortunately, you cannot read a CSV file from the SD card to the PLC. However, you can change your logging system in the following way: 1. log all your data to data table(s). 2. Periodically export the data table to a UDT file. You can either create a new file or append to an existing file. 3. When needed, you can import the UDT file (or part of it) back to a data table and use the data as you will. Hope that helps
  7. Hello Ozone, When the SD card is full, bit 6 in SI66 will turn on. No PLC crashing (or other functionlities) is related to that case.
  8. Hi, Not only it is possible to replace the battery while the PLC is powered, it is also recommended. This way you can keep your system running without losing any values stored in RAM.
  9. Eyal Koren

    Measuring time between 2 events

    Hi Tempo, There are several ways to measure the interval between two events. One of them is actually what you suggested, hence storing the timer current time into a variable. The attached application demonstrates how you can do that (with several other features). This application was taken from the U90Ladder sample projects folder. There are several other timed based applications, so you can check what method is better for you. If something still isn't clear, please let me know. Timer values Store and Load.U90
  10. Hi, It is possible to receive an SMS with mixed constants and numeric variables. I attached an application i modified for your convenience. Please open the application and go to the SMS config function block. You will see the MB1 is activated when message successfully received, and the time value is stored to three different MI's. Please note that to send a variable, the syntax needed to be sent from the phone is as follows (let's assume that the time is 11:11.11): FIRE at Station 2 Time #11#:#11.#11# Just to make it clear - for the PLC to recognize a variable, you need to wrap it with pound signs V120_SMS_Sub_Stations.vlp
  11. Eyal Koren

    An invitation to suggest ideas for new UDFB's

    Hi Milen, Unilogic has only one type of floating point data type, which is the single precision (32bit). Unfortunately, there is no way to convert 64 bit floating point value to 32bit floating point value, because Unilogic cannot recognize this data type (in general, this conversion is possible in environments that work with 64bit values, but you will lose a significant part of the precision or will receive a result of +inf or -inf if the value is too high)
  12. Eyal Koren

    Request: Memory initialize during download

    Hi Dorian, I will refer this request to our R&D department. Thanks for your input on this.
  13. Hi, Thank you for this feedback. We do receive requests from time to time to have NTEP, however, at this moment, we are not planning to apply for this certification. Still, it is something we can consider for the future. The more we grow, the more we can invest in applying for standards.
  14. Eyal Koren

    Request: Memory initialize during download

    Hello Dorian, If you wish to initialize the operands after download, please do the following: 1. In Visilogic, go to the Connection menu. Select the last option - Communication&OS. 2. From the opened window, select the second tab from the left. On the bottom of the window you will see "Reset Options". Select "Initialize and Reset". This is a very useful tool for cleaning up the values remaining in the PLC. Please note that all the values that are not predefined as "Value at startup" will be reset to zero.
  15. Hi Laura, For a start, there isn't really a "best" way. Both protocols are doing the same job, on the same physical layers, in (approx.) the same speed. Before making a decision, more information is needed: What type of communication are you using (serial/Ethernet)? what is the distance between the PLC's? Are there any other devices connected to this network? If using Ethernet for communication, it is easier (on my opinion) to define the PLC Datacom function blocks for data transfer. If using serial communication, Modbus is the fastest protocol to set up in your system.
  16. Hi Dorian, For storing predefined settings for your application or working with recipes, the recommended solution is to work with data tables. Data tables are areas in the PLC memory where you can store and retrieve data during runtime, and also export/import this data to Excel. You can store predefined settings for different machines, and also enable changing these values by the user. For more information, please refer to the Data Tables section in Visilogic help file. Also, there are plenty of application examples you can explore in Visilogic
  17. Eyal Koren

    HSC Frequency Measurement

    Your main focus should be in selecting the right sensors for this task. I suppose that by inductive sensors you refer to proximity sensors, and that it is mechanically feasible to install such sensors in a way that will sense a change in distance for each revolution. After obtaining a suitable sensor (main selection criteria is distance for sensing and frequency) all you need to do is define the sensor in your the Visilogic hardware configuration. You have several options for high speed input: 1. define the input as counter - in that case you will have to build your own logic to calculate the frequency. 2. define as frequency measurement - in that case the input you will get is the actual frequency. There are 3 window frames to select from: 125ms, 500ms and 1000ms. Select your window frame according to the desired update time. I hope that answers your question.
  18. Eyal Koren

    Jazz modbus float to integer

    Hi zaspany, You post raise a question: The Jazz and M90/91 products does not literally have a floating point data types, therefore it is not possible to read float registers, and sure not to convert them to integers. Please explain the issue thoroughly and if possible send the application.
  19. Eyal Koren

    HSC Frequency Measurement

    Hi ftroche, Please send the tachometer model, or more preferably the datasheet of the product. Before getting to the solution, we first need to know what is the communication protocol that the tachometer works with.
  20. Eyal Koren

    V350 with a Thermoregulator

    Hi Nildo, There are several application examples in Visilogic that utilize PID functionality, specifically for temperature control. To access them go to the Help Menu, select the Examples icon and search for the PID folder. That should give you a good practice of how to begin with your project.
  21. Hi, we will be happy to connect you with relevant people, please send Holly.Dillon@unitronics.com information about your location and needs. In addition, we have recently started a program for system integrators, we believe it will increae our ability to recommend people over time. A job board is a good idea – we will see what we can do about that. On the top of that, you are more than welcome to contact our free technical support service at support@unitronics.com and you also will find our forum quite useful for many of your questions. Thank you for your valuable feedback!
  22. Good luck with that Mike. If you need further support you are more than welcome to contact us at support@unitronics.com, or keep posting in the forum
  23. Eyal Koren

    UDP protocol communication

    Hi Huin, According to the ABB catalog, UDP communication is used for display updates and communication between ABB controllers. Basically, you can use the TCP PROTOCOL function block to directly influence these elements, but i cannot see a good reason to do so. Instead, use the MODBUS TCP protocol for communication. It is a well established protocol which will prevent messing around with low level communications and will make your life easier.
  24. To fix this issue in Windows 7, please do the following: 1. Press the Start button. From the search pane type "display". 2. From the search results select the first one, titled "Display". 3. Make sure that the font size is set to "Smaller - 100%", and not 125% or any other custom size. 4. Log off and back on, start Visilogic and you should get the operand description correctly. Regarding your other question, unfortunately it will not possible to open newer applications in older Visilogic versions. Please let me know if this issue is fixed
  25. Hello Easy700, The issue you are describing is probably caused from trying to activate a coil more than once in you application (O0, O1 or both). The whole principle of PLC ladder programming will not allow this. However, if you are willing to activate a coil from more than one place in your application, you are free to use the Set/Reset coils however you like. Please note that this is not a bug nor a phenomenon related to Unitronics products. For further information, you can look up "Double Coil Syndrome", or look in this post: http://www.plctalk.net/qanda/showthread.php?t=4365
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