Search the Community

My application is for a UniStream USP-104-B10. The application is for an OEM and it's written for a fully loaded machine. I'm using a DTI to set and store each machine's configuration. Upon initial startup, a high level user will set the configuration bits. Pressing a Save button writes them to the only record in my DTI, pauses 2 seconds, and stores the record in a file on the SD card with the "Store DTI To File" command. This seems to work reliably. The problem I have is when I read the file with the "Load DTI From File" command on startup. Roughly 50% of the time I cycle the power, the command returns a status code of -5 (Read File Error). I've tried numerous methods. Currently, I immediately start a 5 second timer in the main ladder routine. Upon timeout, the "Load DTI From File" command is enabled. I set a coil downstream of the Load command and use that to prevent re-execution of the Load command (see attachment). Is there some sort of timing issue that I'm missing? Why does this work sometimes but not always? Any suggestions? Thanks, Ken

Dear all, I am using different data tables in a project, including saving and loading TDI from SD card. Some of the tables are "system" oriented like settings, and some tables are "user" oriented like programs and recipes. User should select a file by using HMI element: File selector browser . For now ALL DTI files are kept in the DT folder and selection is problematic. I need to separate each kind in a different subfolder, so the selection will be user friendly. The "Store DTI to a file" and "Store DTI to a file" ladder blocks is not giving the option for different sub directories , that would helped if exist. File selector browser is not supporting sub folders as well. Can I use differents folder path as part of the file name string? or any other way to manage subfolders? In addition, "Copy/Move file" and ladder elements, don't have the option to copy or move within SD card folders, but only to/from DOK. It would have helpful if possible to arrange the files by type of functions by ladder. any ideas? Any help?

Greettings, is there a way to export the csv file including the date in the file name? Currently I have the name "Refinacion" as the exported file name, I think it is overwritting this file every time it exports.

Hello, I'm trying to read values from a data table within a C function. I cannot find any examples. Could you show some examples?

Dear All, I am using the USB key to transfer some DTI...all works fine but sometimes, after I removed the DOK, a windows appears and highlighted me that I done this action in a not security way...and tell me to use the " safely remove DOK" !?...in the UniApp I have it but how I have to do to insert this "button" in the ladder...where I find the function? into the "external storage" I found only the BITs about the SD and DOK presences. thanks

I think it would be really valuable to make the user controls(maybe only the combo box) more dynamic, by being able to link them to a column in an indexed data table. The control would return the index number of the selected DT row which could be used to retrieve info from that DT row. I really like the "Custom Control" but they can only be used for static option lists. Thanks for considering! Allen

Dear All, I have to store a DTI table, when it is full (1000 rows and 8 columns), in the SD card...and after I have to clear the table to start again with the recording of the data...how much time is needed to store compleately the table to enable the "clear DTI" ladder function? in the "help" I found an extimated time only if I use this function followed by a "load from file" function. thanks

Is it possible to either use the description field from struct members or add a second header row to an indexed data table? I would like to add a row or otherwise include the units of measure relative to the value being recorded. Thanks!

Hi, I'm trying to move data table from SD card to USB memory stick. What is the default DOK file path?

Are there any issues with calling PID configuration from something other than SB2 on startup to change the configuration without restarting the PLC? The desired end state is a v350 controlling two electronic regulators with different set points throughout the day.

Hi there, I am having issues writing data from a DTI table to file. I created ladder logic to write data to files on a regular basis. I couldn’t use the normal Data Sampling functions, as although I need to log to file regularly, there are times when the (measured) system state is unknown. At these times I have to stop regularly logging to file and wait until a certain period has elapsed before I can accurately assess the system state and start logging to file again. So what I do instead is regularly write a row of data to a DTI table, inserting it at the top so that the rows all move down one, using the Insert Row in DTI function. When the system state is known, I write a row of data from the DTI table to file every 2 seconds. When it is unknown, I record the row of data in the DTI file, then when the system state becomes known again, I "catch up" writing all of the rows I have not yet written to file from the table, one at a time. This has to be done one row at a time as the files are appended to one row at a time and so the oldest data is at the top of the file, but at the bottom of the DTI table. I am logging rows one at a time using the Store DTI to File function, appending to file and using the CSV option to make sure I get a CSV file as well as the default UDTF file. This is because it’s easier for the end user to open a CSV file rather than have to convert it first, even if it does come inside a .zip file. I was sent a converter that converts UTRF and USMP files to CSV, but not UDTF files - is a converter available? When logging to file, I start at a certain time and use that as a date/time stamp (in the format yyyy-mm-dd_hh'mm'ss) for my file name, so before the weekend, I set the PLC logging every 2 seconds, and it started with a file name of "Data_2014-12-12_18'24'37". I set the ladder up so that if the number of samples in the file exceeds 60,000, then the file name changes, so that I can start logging to a different file and so split up the data into multiple smaller files that will open, even in old version of Excel. So after a couple of days, it made a new file name, "Data_2014-12-14_03'46'06" and started logging data into that. The issue is that while the PLC made both a UDTF file (which I can’t open) and CSV file (in a .csv.zip file, which I can open) for the first file ("Data_2014-12-12_18'24'37.udtf" and "Data_2014-12-12_18'24'37.csv.zip"), it didn’t make a CSV file for the second file. I have looked for these files on the SD card of the PLC using both Uniapps and FileZilla, via FTP. There is more (perhaps linked) strange behaviour when looking at the SD card contents via FileZilla/FTP, and pressing F5 regularly to refresh the view of the contents of the DT folder on the SD card. There is, in the DT folder, a .csv file, with the first file name ("Data_2014-12-12_18'24'37.csv"). This file is not inside a .zip file, and, even though the logging to file is now stopped, the file is seen to grow in file size from very small to about 7.5 MB, then another strangely named file, like "ziFheLDg", or "ziMqNiMw" will appear, then that file will disappear and the .csv file will shrink in size and then grow again. This seems like it might be the PLC regularly re-writing the UDTF file to a CSV file, then zipping it into a .csv.zip file, but that’s just a guess. But the thing is that it’s still doing this for a file that’s already been written to, and so doesn’t need re-writing to a .zip file. When the file name has been changed and a new file is being written to, how can I get the "also save as CSV" option to stop writing the old file to a .csv.zip file and start doing it on the new file?

Does UniOPC support historical data access (HDA)? If so, is it possible to access data tables in memory and on SD card? How? If not, what is the recommended way to do a fully automized download of logged data? I am using Vision OPLCs. Thank you for clarification, Ronald

G'day! I'm having some issues retrieving info from a specific row in a table, is there an easy way to do this? I've tried using "Read Row from DTI", but it asks me to use a struct as an output with the same row structure, but I want this rows output to go into a single variable. Thanks, Exouxas

Hello, My project involves filling a data table with real time data, and in order to progress through the experiment it needs to read the last 100 values recorded, sort them, and then get the resultant range. So I only need to read the last 100 values of the column I am currently fillling up during the program, but I only see a function that copies the entire row to a vector. This wouldn't work as the column has more numbers than the MI memory has operands. Is there any way to only put part of a column into a vector? Thanks in advance!

Hello, I'm using UniLogic and I want to copy only a column for example recipe names. In the VisiLogic software this is possible with a function under data tables. How do I do this in UniLogic? Thanks, Jan Martijn Lenselink

I want to copy from an Array (INT16 × 15) to a single DTI cell which holds a similar array. In effect I'm trying to copy one dimension to another. Does the function 'Copy array to column in DTI' allow this? The compiler allows me to set the function up, but no data seems to be transferred. Regards, Robin Proctor

Hello everyone, I have a few questions about the software Unilogic and using it together with the USP-070-B10. First, what I want to know if it is possible to read the files on the SD card in the map "/DT" and especially the files for the data table because I want to show the user which files are on the sd card, but I dont want to use the uniapps menu. I have created now that everytime the user send a file over ftp to the PLC, the data table will add a new row with the name, but if the user change the sd card or remove a file from it, the PLC need to see this also. Second, I have created a data table with strings, if I'm trying to search for a specific string a column. But if the string is for example 10 long and the word I'm trying to search is only 4 long, I cannot find it. But if i make search first from 10 long and the second 9 and the third one 8 the value will be found. but the fourth value cannot be found with a length of 7. this mean that I can only search for 3 different lengths, but if the users insert more different values between 1 and 10, only a few values can be found in the data table. But if you use integers and search for integers he can find all the values. how can this problem been solved? the search value will be typed in a text box on the display. third, Is it possible to program on the PLC that if there are any excel files on the SD card to create a data table file on the PLC itself. then the user can send the excel file through TCP to the PLC and does not need to send the data table file. If someone could help me with this problems, you would be thankfull! Leon

We have used Pcom to communicate to the data tables in the vision series. How do you recommend communicating to the data tables with the unistream? I would like to connect to a database that I built in Ms access. What would be recommended method?

Hi all, I've been spending almost one day looking how I could compare to ASCII strings without success unfortunately. The idea is to compare a string from the HMI (username) with a String inside a user account data table loaded into a struct row after row. This is just to be able to make a kind of login function with user and password protection. Guillaume

I am using a V1040 with a Data Table in which I need to write/edit values. The Properties setting for allowing this is greyed out. Can someone tell me perhaps why and how to fix it? Thanks.