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Found 142 results

  1. Hello! I am a senior at UNew Haven in CT, currently building a machine that should mix gravel and water. I am a mechanical engineer so I have no idea what to do or where to begin! I am using the Unitronics tutorials but they are long and my time is limited We are using a VFD and V570 with PLC and HMI. I need the PLC to: 1. Move a linear actuator up and down 2. Using the VFD, to control the speed of the mixer 3. Control the duration of mixing (Created a preset keypad timer but not sure how to make number buttons and how to embed them to the keypad.) Any help or guidance would be very much appreciated Best
  2. Hi all and thanks in advance, I have a program running un a Uni stream USP-070-B10. Using software version 1.25.61 UniLogic studio. I am trying to find a bit that will tell me if any Alarm is active, I have looked thru the help file, system variables, and searched this forum. I did find a comment from Saragani posted July 1, 2015 stating: " On the next version (1.15), it is planned to have a tag that contains: * An array of 32 bits (one per group * An array of 1025 Bits ( 1 spare bit + 1 bit per alarm) * A bit that indicates that 1 or more alarms are active * An interger with the total number of active alarms" Am I just blind and missing something? or did it not get added? The reason I am looking for this is I have a client with a remote cabinet with the PLC in it (no network connection or outside connection but power), they want a light added to the top of the cabinet and turne don if any alarm is active so they can see they need to go out there... Thank you for any assistance you may be able to provide, Bob
  3. Hello, I have a rain bucket to monitor every 0.1mm of rainfall. I would like to display how much rain there has been within the last 24 hours, 7 days and month. I thought the best way might be to use a data table and 'insert row' which would push out old values, but to then acquire the sum of the data table is a convoluted process. Any suggestions on how I could achieve my goal?
  4. Hi, In my Unilogic programme, Scan time is between 6-9ms, with Ladder Time Max about 2.7ms. But sometimes, aperiodically, Scan time is 35-38ms, while Ladder time is the same. Never 15 or 20 or 25ms, always 35-38ms. I need Scan time to be less then 10ms. How to solve this?
  5. Hi engineers! We can't implement this kind of contacts in the UDFB´s, so could u tell me how can i simulate type of contacts inside my UDFB?? Regards.
  6. I am trying to make a running totalizer in unistream. Trying to figure what best way to that. I am kinda new at the unistream line, but it has been pleasant experience. I attached what I had. Any advice on how should go about this. Trying to calculate GPS on flow. Thanks
  7. Hi I have a 7" UniSTream with a WCB-1 adapter. I am using this PLC for a very simple task of monitoring contents in a tank and then controling some relay outputs depending on the tank contents level. I have a pressure transmitter connected to a analogue input 0 and this was working correctly whilst setting up - I was seeing the correct output from the transmitter on the PLC. I also had a type K thermocouple connected to RT2 input - again during setup this was giving me a correct reading at ambient (approx 20 Celsius). Now, during some updating of the logic, my transducer input is showing over range constantly (16689 units when the adapter is scaled to give 16383 maximum output) and my thermocouple is showing a tempoerature reading of +4359 Celsius. I have checked the various status' of the WCB-1 and this is the outcome: IO - Status 00000000 Analogue Input Status Input 1 (transmitter connected) - 2 Analogue Input Status Input 1 (transmitter disconnected) - 16 Internal Info - 363 I have uploaded a blank project to the PLC, and I am still getting the same problem. Does anyone have any idea why I have run into this problem? Thanks in advance
  8. This may seem trivial but is there a way to define the zoom setting in ladder editor so when you open it it starts at say 70% instead of 100%? I did not find anything in the Project-Options but was hoping it's somewhere else? I have 18 "modules" that I need to open and close regularly and when I re-open it, boom Gigantic. Additionally, to the mods: How many posts do you need before your comments and posts need to be approved?
  9. I seem to be seeing an issue with the TON function. Any timer that is running when the PLC gets power cycled or rebooted will immediately trigger when the PLC comes back on. The timers are set for "Retained". Shouldn't they just continue timing from where they left off?
  10. Hi everybody, We have UniStream controller running application and modem for sending SMS alarm messages. Each alarm has it's own bit, that enables SMS send routine (from example library with operator string, now we have 3 operator's phone numbers). Now after some time we noticed that sometimes messages are not sent. Seems like there is problem when several alarms occur at same time. Maybe someone has suggestion how we could sort this issue? Thank you.
  11. Dear all i have a problem in HMI it gives an error of stop mode plc how can i reset it or jump to run mode
  12. Is there a way to re-order regions? in the ladder?
  13. i am create application with messages for audit traill actions the operation. I wold like select the message with index , show in left collun. But not found way for select message for write in table dti or external ( sql table). I need help for optimize application and not repeat many times same code. i hope developer team create one way for create selection more easy. regards,
  14. I've tried to find a way to load a HMI screen via ladder within UniStream (which I found to be a very useful function within VisiLogic), but so far without success. Is there a way to get things done like: if a condition turns on screen n° xxx will be opened? Thanks for your feedback. Olaf
  15. Hi, In my UniLogic project I have some binary text objects associated with digital input bits. I expect that the text inside the text object changes accordingly to the associated bit, in this case the state of the digital input pin then. Going online to debug the program I am forcing the input state of the digital input pins and nothing happens, the text in binary text object does not change. If I apply a voltage to the digital input, so that it reads 1, the binary text changes as expected. If in a rung I insert a contact associated to the digital input bit that drives a coil associated to a memory bit variable, then if in HMI I associate the binary text object to that bit variable, I can see it changing if in online mode I force the state of the digital input. Does anyone know a fix to this annoying bug? If the PLC is not nearby it's a pain to debug and I'd like to avoid to mirror all the digital inputs on bit variables just to fix this. Thanks.
  16. Hello Gents and Ladies, I am new to the unistream line. Haven't had chance to take the seminar for it. It definitely little bit different then Visilogic line as for programming. Just trying to figure the math out. Some of it turning out to be zero. Just can't figure out what I am doing wrong. If you care for some points. Would like to see math examples. Thanks PICC1.ulpr
  17. Hello there, i'm trying to find a way to Initialize the TCP/IP card with the IP,Mask,default Getaway from the data that i initially put in the device through the Information mode. I found the Retry and Timeout Registers (SI 101,102) but i can't find the IP, Mask and default getaway to Dynamically Initialize the TC/IP card. I don't want to have different .vlp's for each device. P.S. i also saw the MI option but it would put unnecessary complexity to the ladder program (need to have two modes in start up etc.). thanks in advance, Nassos
  18. Hello, Is there any way to implement timers in UDFB?
  19. The majority of my current applications involve Load Cells. I currently use V350 and/or V560 with an EX-A2X expansion adapter to an LC1/LC3. I originally used EX-RC1 but deviated from it and use exclusively EX-A2X because I can email and explain to any customer how to upload clones for any specialized changes I make to the V350 and V560. Since you need to be physically plugged into the EX-RC1 to do any upgrades its usefulness has its limits. So My question is what is the easiest way to utilize load cells if we do make the jump to Unistream line of PLCs? I'm really hoping my options are not limited to CanBus to EX-RC1. At least it is an option, but I would likely add more Analog I/O to the same location, which goes back to making changes a bit more difficult. I know there are other ways to upload a program to the EX-RC1 but Internet connection is not readily available at all machine locations, and having a guy on the other end of the phone with any amount of programming knowledge never happens, so the less I need to walk someone through how to use a computer the better. Plus the machinery moves and most plants don't want to take the time to plug the system into their router, let alone properly set up a network.
  20. In helping a customer integrate a UniStream into a SCADA system I have come across a curious gap in the available information. I can't see any declaration of the function codes that the external Modbus master must use to communicate with the UniStream as a slave. The Unitronics example and tutorials use a UniStream as the master as well as the slave, which doesn't highlight this issue. I have looked within UniLogic, tried exporting the Modbus registers as excel, looked at the UniLogic help file, watched the Unitronics YouTube video and searched the forum. None of these sources gave the necessary information So far I have gleaned that the following codes are supported on a UniStream modbus slave: Coils Read Coils (function code 1) Write Coils (function code 5) Write Multiple Coils (function code 15) Registers/Words Read Holding Registers (function code 3) Write Single Register (function code 6) Write Multiple Registers (function code 16) But what if the customer's master only supports Read Input Registers (function code 4)? I don't have a firm answer on how we could handle this. Can anyone provide a definitive list? I would like to be able to answer this question with confidence. A standard part of documenting a Modbus Slave is to specify which function codes it supports, so the master can be correctly programmed. Thanks, Simon
  21. Hi people! I'm developing a project with UniLogic v1.25.61 for the UniStream USP-104-B10. I need to sort an entire Data Table (2 columns, A and B), sorting just one column (A), has anyone ever try this? The other option is to have 2 arrays (A and B), sort one (A) of them and then I need to sort the other one (B) the same way I sorted the first one (A). I don't know if I'm being clear enough so here you have an example: Before sorting: A={1,4,2,3} B={Q,W,E,R} After sorting just column A or array A: A={1,2,3,4} B={Q,E,R,W} Thanks in advance! Cheers, Gonzalo
  22. Hello All, Can someone help to build a simple program for switching multiple outputs with delay ? Condition is: Input ON, Output 1 ON then delay XX seconds Output 2 ON, and .... delay XX seconds Output X ON. Input OFF, Output 1 OFF then delay XX seconds Output 2 OFF, and .... delay XX seconds Output X OFF. thanks in advance.
  23. 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
  24. Is it possible to make the substring or remove string length variable? I need to read a string with changing amount o characters. I need to read from / to the next / for example.
  25. Hi, In my program PID auto tune is not functioning. Overshoot came across when I tried it. After that I entered values manually in the PID loop.In that also little bit of overshoot could observed. May I get some help from to solve the PID issue.
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