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Showing results for tags 'ladder'.
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HI, trying to convert an ascii based string of numbers into an integer form using the STRING TO NUM block but im not getting any integer at the output tag. what really should i pay attention to when using this STRING to NUM block
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hi have created 2 data tables but really struggling to write to them have watched the videos but still struggling help !!!!!!!! -
Hello all, this is the first time I am writing to this forum. We were using vision plcs and now is the first time we are using unistream. We have connected the cards through USP-TCP. For the analogue input we are using the card URA-0800O and we set the input 4-20mA. The sensor we are using is 4-20mA 0-150oC. We tried linearization but the output value is wrong. In X1 we entered the value 818 and X2=4092. in Y1 we entered the value 0 and Y2=1500 but the output value is 0 and does not change. When we change the Axis values (y1=818,y2=4092,x1=0,x2=1500) in linearization, shows an output value but is 10-15 degrees less than the actual temperature. Are we doing something wrong? Thanks
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Hi, I'm trying to build a log for my system using the Store DTI to File function. This runs after the struct containing the date is inserted into row 0 of a table, which should be appended immediately to the log file. The writes are sufficiently spaced (~30 minutes) that the SD write interval isn't an issue. I've found that when using option 2 "Only CSV" for the "Create CSV" input (F), the file is simply overwritten, and only ever contains 1 row. Option 1 "Create CSV File (All - udtf,csv,csv.zip)" does append correctly. In both cases "Append to File" (E) is set to 1 "Data will be appended to the file". This looks like a bug to me, and combined with the missing documentation for those options, I've wasted a little more time than I'd like trying to figure that out. Option 1 is an acceptable workaround, so I don't need further support, but this should be fixed. Sandy
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Hello, I am new to Unilogic, and I have been through many of the unilogic tutorials, but I can't seem to find much documentation on working with strings. I want to write a program where the user types a string via the hmi and the logic of the program determines whether or not what was entered matches one of several options. For example, the options are 'red', 'yellow', 'blue'. The user types 'blue', and the program displays that they have selected blue (in a practical setting this could be linked to an action). Additionally, if the user makes and error and enters 'blur' instead of 'blue', the program shows an error.
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This may already be possible, but I can not figure out how... Control Layer visibility via ladder to show and hide elements during operation. Example of use: Maybe I would like to stack a few layers of element groups (ex. buttons, text elements, whatever). Then depending on a selection or process needs display a different layer with the pertinent elements. For now I am staking buttons, text, etc and displaying them based on process needs via the visibility tag. Which works but it would be great to group them and change visibility together. Just a thought! Thanks😀, Rich
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Hello, I would like to change the CPU IP Address via code, not HMI. It looks like General.CPU IP Address is the only way to view the address but it is read-only. Is there a way to accomplish this or should I be using Panel IP instead?
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I need help, I want to know if two arrays have identical values. What are possible outputs values of this function (F - Result index) and what is the meaning of these values? Thank you
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I decided to use Internal Control Bit Arrays 2 x(255) on this large project to keep the global tag list manageable. I need to reset all these bits with an HMI button. Is there a way to reset an entire bit array? I get compile errors when attempting to use the reset coil. I really really don't want to have to put reset coils in for 500+ bits Thanks in advance
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Hi, I am using US7-B5-TR22 and the UniLogic program. In the ladder diagram , i am trying to use bits manipulation on information i read from a Modbus Slave. The information i read is a 16 BITS long and according to the slave component's datasheet i should divide the 16 bits information into 4 nibbles (4 bits each) by some bits manipulations . Every nibble contains a different type of alarm For example : If i receive the following information : 1110 0010 0011 0001 the MSB nibble is : emergency stop alarm. the second nibble is : Low Oil Level the third nibble is : High Coolant Temperature. The LSB nibble is : Low Coolant Temperature. So let's say that i would like to check the Low Oil level alarm's status, Therefore , according to the datasheet , i should Right Shift Register by 8 and then multiple the result by a 16 bits mask. which supposed to be : 0000 0000 0000 1111. As i'm new to UniLogic i need a little help on how to perform those manipulations in the ladder diagram. Thanks in advance.
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Dear All, I would like to store a variable to an other, but I can not find a direct solution. In ST it shows like this Var_a : structMachine Var_b : structMachine Var_a := Var_b
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Hi, I've written a program which has a 'save user settings' and 'restore user settings'. Unfortunately, the code I ended up with is really complicated and I worry that future programmers will have a difficult time understanding how it works. I've included a small snippet below for reference. Is there a way to save settings on the SD card and load them back in without writing it into ladder logic, or other ways to achieve the same objective? Thanks in Advance- Zac
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Hello, I'm wondering if my problem is a software one or hardware? And what kind of issues could be causing it in each case. The system is alright when at rest, but when put to work (triggered with input) it works fine for maybe 10-20 seconds and then I get a "CPU in stop mode" message on the screen" and few second later a message about CPU error. I've removed the CPU unit and put it back on, but with no luck. Does anyone have some hint for me? Thanks, Bjarni
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Hello, I was interested in the "modbus set slave ID" block with its name, but I do not know how to work with it and what it does, I also wanted to understand - is it possible to change the slave ID in Unilogic?
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Hi all, After downloading my latest changes I get a message on the screen saying "CPU Error Detected. Communications with the CPU cannot be established..." See attached screenshot for details. I have tried resetting the modules, have checked all the wiring, grounding etc. and can't find anything amiss there. Also, I can revert to an older version of the PLC and it will run for a short time before getting the Error message again. I'm not an expert with Unitronics but can't seem to find anything relevant in the forums or online. Can anybody shed some light on this? Thanks in advance.
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Hi, I am facing one issue when adding strings into the 7th row in the index data table, with no issue before that. The error message is "Value is not available". What does this mean? Thanks, Charles
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Hi All, I have recently started a project controlling a servo motor for re-rolling labels. I have some mild PLC experience using Siemens but I have never set one up from scratch myself. Never used Unistream either. At this point in time I'm just focusing on sending a HSO to the servo using the Pulse Output on the URD-02PU. I have searched around but as these modules are so new I am having troubling finding information. https://support.unitronics.com/index.php?/selfhelp/view-article/Remote-IO-Pulse That is really all I can find. I'm unsure how I am to utilize this module to set up step & direction control. My understanding is: - I need to allocate a Binary output from the Module to set Direction (High = Clockwise, Low = CCW) - Write a number to either the "Pulse Quantity Output" or "Frequency Output" to set the "steps" - Send that required number to the servo via one of the outputs. Is this basic summation correct? Hopefully you can help. Or even some form of detailed description for this module would be greatly appreciated. Let me know if you need more information. Thank you. Cheers, Jacob
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Dears All, i am concatenating 4 String UTF-16 formated; between the strings I insert a ";" separator (also UTF-16 formated)...so...I am able to have the end buffer properly filled with th einformation...but I am not able to have a "new line" when I try again to append the buffer at the SD file. I tried to insert, at the end of the buffer, a lot of characters (u\2424; u\000D; u\000A...etc alone and conbined )...but nothing works...or better...with the file saved as TXT and with the u\000D in the "windows note pad" I see the right lines...but if I use "notepad ++" or i try read this as CSV i have a long single line. how to have a "new line" ? thanks
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Can I change the font color in a region - specifically for a region name? White text on a yellow background is rough on my old eyes.
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I'd like to use a list in a combo box from a data table column on Unistream PLC. Is it possible? If yes, which is the easiest way to realize this? Thanks in advance for the help,
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Hi. How can i change a data table fields using c function? Can you please send me an example?
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Hi All, I just update one of my project, that is working perfectly, from version 1.26.90 to 1.29.111...and I saw that the ladder function Store DTI to File need more time referred at the previously version...to be clear I let 1 as F parameters (all file type)...with version 1.26.90 I think that the storage of the file needed much less of 1 seconds for each DTI....with version 1.29.111 I think 4-5 seconds are needed! I tried to clean the SD...then all the files are generated by the same version...but is the same. I also saw that some .sig file are added...but if the file name has a special characters like "&" the .sig file creation fail and avery time that I tried to save the file the "SD store failure counter" increase....I removed the "&" and all works fine. what can be?
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Is the help topic "LF: Write Value to DTI column" referring to the toolbox item "Set DTI Column Value"?
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Im using a unistream 7 to communicate over serial with a pump. I am able to set settings over using the COM Tx and Message composer, however I am encountering issues with the COM Rx command. I can set rates and volumes without a problem, however I want to also grab the max rate and volume from the pump at the start of the app or when a user pushes a button. I should be able to send "read limit parameter", which then returns the max rate, min rate, max volume, min volume, The following is the return from putty. read limit parameter 29.12145 0.00010 29.31703 0.00269 > However it often takes pushing the button two times to send the command to get a response back. Does the buffer need to be cleared after a read and if so, whats the easiest way to do that? Also, the message that comes back is cut off in the buffer. I only see "read limit parameter" on the receive message. The numbers do not show up in the buffer. I am using the store buffer into tag command to show the information in a string box on the HMI. Ive tried changing the buffer size but it still doesnt help. Any other suggestions on where to investigate the timing issue and the missing data issue? Thanks
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Hello, i have a question regarding the file name in a store dti to file function. i need to create a new file every time i run the function which is set to happen every day at 6am. is there a character restriction in the target file name string? i would like to utilize the dd/mm/yy string that the RTC to ASCII V2 function creates as my file name if possible. at this point i am pre planning a project and do not have a physical controller to test. thanks ricardo
