AlexUT

Hi, Please visit unitronics Helpdesk Portal and search for SD word: http://support.unitronics.com/ You can find number of articles. Review next: What brand of SD cards can UniStream PLCs support? What is the SD maximum size? Does it support SDHC? https://support.unitronics.com/index.php?/selfhelp/view-article/what-brand-of-sd-cards-can-unistream-plcs-support-what-is-the-sd-maximum-size-does-it-support-sdhc UniStream SD cards- Must I format an SD card in order to use it with UniStream? https://support.unitronics.com/index.php?/selfhelp/view-article/unistream-sd-cards--must-i-format-an-sd-card-in-order-to-use-it-with-unistream Prepare Disk on Key (DOK) or SD card to work with PLC https://support.unitronics.com/index.php?/selfhelp/view-article/prepare-disk-on-key-dok-or-sd-card-to-work-with-plc Or format it with SD Memory Card Formatter https://www.sdcard.org/downloads/formatter/ Maximum supported SD card size for Vision PLCs is 32 GB, but it is recommended to use SD card with maximum capacity of 16 GB. *32 GB just show error when prepare it from SD Tools. SD card should be formatted as FAT32. Other formats are not supported. Last thing - it is good to make first format as Full, not Quick. this will help to detect SD card defects. Hope this helps to have active SD card. B.R.

Tech Support VisiLogic Download section there is PCOM protocol description.

Look at next link: https://www.unitronicsplc.com/Download/SoftwareUtilities/Unitronics Data Table.zip This is in "Programming tools for developers section of VisiLogic Software. B.R.

If it not work with simulator, then control loop does not similar to real one, or PID startup parameters are wrong. First, you have to look for description of status=-2. 1. Clean MI 304, as it calculated by PID Autotune. 2. MI 222 should be 1000, and you can use it to indicate percentage. 3. In linearization swap 4096 and 1000. *4096 is wrong. Should be 4095 (range is 0 to 4095). MI 2000 will be in range 0 to 4095 and you should link it to Analog Output. 4. In PID Autotune select 2 cycles and run it again. Does it work now? B.R.

Yes, You can create UDFB (User Defined Function Block). You can look in UniLogic examples how this works. You can download examples from following link: Visit Unitronics Helpdesk support.unitronics.com and search for "UDFB" word Here you can find information about UDFB. B.R.

Does PLC you refer now connected to real system, or to kind of "simulator"?

Hi kvj, Your question include two different parts. My main question is, (is doing the auto tune using PID SERVER tool will work for good ?)[1] (What will be of any possible issues later on, if any?)[2] Part [1] can be answered: PID Server is running on PC. It can consume much more resources (CPU, memory), and it may make PID Autotune more precise. But it is dependent of other conditions - PID startup parameters, Sensors/Actuators models and phisical location, inertion of sensors/actuators, etc. And good side of PID Server is possibility to save PID parameters graph. You can use this graph for feature reference, send it to someone for rteview, etc. And yes, you can change PID parameters and make optimization by compare results of an original PID Autotune calculated PID parameters and changed ones. Part [2] is acadenic, so everybody can add answers in accordance to experience. B.R.

kvj, Please provide more details, then community will help you better. 1. Post project file. 2. Publish sensor type, output /actuator type, settings, what kind of device you manage - heater/cooler, etc. 3. Other details. B.R.

Diego7793, Please send your request to support@unitronics.com Add PLC serial number from Panel and PLC model. Support will send you instructions. *Instructions are not published, as are dependent of number of conditions (PLC model, UniLogic version, Firmware version, etc.).

Rename it to .u90 abc.bak -> abc.u90

Hi Oleh, Why do you need timer resolution 1 msec? PLC scan time will be number of msec, and timer resolution have no meaning in this case. What PLC should do to use 1 msec timer resolution? B.R.

Hi, As this problem happens after PS shortcut, you have to check power supply. 1. Check PC for output voltage, voltage fluctuation and ripple. 2. Check PC for load. Recommended to keep PS loaded not more than 80% of maximum load. *If maximum load is 2.0A, then use PC rated for 2.5A. 3. Replace PS for new/good working one. Best regards,

Hi, You can start from VisiLogic Help. B.R.

Hi, Send your request to support@unitronics.com and explain your request. B.R.

orso2p001 Is you link for Linux-like PCs? "#!/usr/bin/env python" damiankk - How about to use SQL database connection? You can create data table and add records with time stamp. Then use this information as you wish. B.R.

Hi In Windows 10 use "Win"+ "Laft/Right Arrov" to move window or pop-up back to Laptop monitor. B.R.

Hi, All outputs are Normal Open. Power-off PLC. If contact stay closed, then contact is welded.

Please show how you set all Input jumpers and how you wired PT100 sensor. Hope it is 3 wires. Use minimum configuration for test - only 2 AI. B.R.

Hi, 1. Please check jumpers for good contact. *Take jumpers from other PLC for test. 2. It is not recommended to exchange board. Upside board store all calibration data for upside board. Downside board store all calibration data for upside board. B.R.

Hi, Please send your request to support@unitronics.com Add to your request PLC SN, from what version of firmware to what version of firmware you did upgrade, or what is a UniLogic version you used for firmware upgrade. How you did upgrade - Disk on Key, or remote. Does USB connection to PLC works? B.R.

Hi, you can find recommendations and advises when search in forum for "display elements". One of topics: Finally, Send your questions and requests to support@unitronics.com. In this case forun cannot help you direct. B.R.

No, It is available for UniStream devices only.

Hi lukeh, Please provide next information for successful troubleshooting: 1. How many files are in each directory and sub-directory? *Review help to see limitations. 2. What is a size of each file, especially last you are referring. *Very long files will make access time unacceptable. 3. When SB344 stuck - scan and repair file structure at PC. 4. Make visual check if a file structure is OK (no strange file names and directory names, etc.). If there are strange file names and directory names, etc., then backup all data and format SD card again before use. Show us results. *It is recommended to review next articles at Unitronics Helpdesk Portal: https://support.unitronics.com/index.php?/selfhelp/view-article/what-brand-of-sd-cards-can-vision-enhanced-plcs-support-what-is-the-sd-maximum-size-does-it-support-sdhc https://support.unitronics.com/index.php?/selfhelp/view-article/what-do-i-need-to-do-before-i-can-use-a-sd-card-with-vision-controllers https://support.unitronics.com/index.php?/selfhelp/view-article/prepare-disk-on-key-dok-or-sd-card-to-work-with-plc B.R.

Raspberry PI serial ports are TTL (unipolar, low level). You cannot use it for direct connection to other non-TTL devices. Communication to PC use RS232 bipolar signals. You have to use any available TTL-to-RS232 converter, either shild, HAT, or other one. When hardware interface will be connected, you can continue with PI and PLC programming. You can read details at next link: https://elinux.org/RPi_Serial_Connection#:~:text=The Raspberry Pi serial port,the other%2C and vice versa. B.R.

Download Cashe by use of WiFi. If this is not possible - test if you can download cache in Remote Operator (PC) and look if there are errors pointing to specific picture. This points to bad picture image at PLC memory (and in project). You have to replace damaged image and reload all project, include images, and test cache load by Mobile Remote Operator.