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Showing content with the highest reputation since 08/05/2010 in all areas

  1. 6 points
    Download the attached Rar file, and extract the files to UniLogic installation directory. This means that the "UniLogic Diagnostics.exe" (and all the other files) must be placed in the same directory where "Unitronics.Shell.UI.exe" is located (usually at: "C:\Program Files (x86)\Unitronics\UniLogic\") After you've extracted the files, run "UniLogic Diagnostics.exe" and click on Diagnose. Most chances that it will show "SQL Instance" as one that has problems. In case it find problems, the "Fix" button will become enabled. Click on Fix, and the program will attempt to fix the problem, and then it will re-diagnose the problems to confirm that they are fixed. Please tell me what problems it found . Also tell me if it managed to fix the problem that you're experiencing with UniLogic (that it is stuck in loading components). Thanks. UniLogic Diagnostics.rar
  2. 6 points
    You can create a struct that contains the information structure that you want to pass to the UDFB. It is more logical to pass a struct with 50 members other than passing 50 inputs. Think of how the ladder element that accepts the 50 inputs will look like. it will start at the benining of the screen, and you would have to scroll few pages down in order to see its end.
  3. 4 points
    If it is really bad I've been known to hang an electrolytic capacitor between the analog input and 0V. I'm not kidding. Something like 10 uF @ 25V. Joe T.
  4. 4 points
    The USB in the UniStream acts as an Ethernet card (while in Vision PLC, it acts as a serial port). The USB of the UniStream is an RNDIS device, and for getting // assigning the IP address of the PLC over the USB-Ethernet an uPnP protocol is used. If the firewall blocks the uPnP handshake between windows and the PLC, then UniLogic will not be able to get the IP Address and communicate with the PLC.
  5. 4 points
    This is a UDFB for linear ramp output with rise and fall time. The program detects change in the target value and ramps the output until it reaches the set point. If the new target value is greater than the current value, it makes a rising ramp. If the new target value is less than the current value, it makes a falling ramp. Calculates the relative ramp time according to maximum ramp and fall time given by the user. Function Inputs: Target value Rise time (This is the maximum rise time from the minimum output value to the maximum in msec) Fall time (This is the maximum fall time from the Maximum output value to the Minimum in msec) Maximum value of output Minimum value of output Function Output: Ramped output register Application: I wrote this UDFB to control hydraulic pressure using proportional valve via analog output. It could also be used to drive a stepper motor with acc/dec using pulse width modulation.
  6. 3 points
    OK, Done. Next release.
  7. 3 points
    Hi All I purchased this device on ebay. The model number is "VAP11G Bridge Cable Convert RJ45" (probably many alternatives available) Cost around €15.00 Works a treat on unistream. Plug in the ethernet and power via the USB port. PLC can now be programmed with the panel door closed over wifi. Should also work with Vision but you would need a power bank or 5v power supply.
  8. 3 points
    Continuity is easy - just connect +24V to one side of the wires one at a time and see if you get it on the other side. If you have a bundle to check you can switch wire feeds in with relays and make sure you only get one signal on a DI module connected to all wires. The RTD module only returns temperature from a resistance of about 25 ohms to 267 ohms. You could reverse-calculate the resistance, but I don't think this is the range you're looking for. Resistance is not so easy. Many moons ago I rolled my own ohmmeter with a DC power supply, current limiting resistors, voltage inputs on an analog module, and current sensors into another module. I was trying to measure to .01 ohm resolution on wire to make fuses and it kind of turned into a trainwreck. I learned about thermal drift of a multi-component system the hard way - I could not keep the thing calibrated. I eventually bought a really nice four-wire ohmmeter with a serial port and multiplexed it between the wires under test - the manufacturer liked it so much they asked if I would write an app note about it- https://www.tegam.com/wp-content/uploads/2015/10/AN103.pdf So this is an area I actually know a little more than the average bear about. This approach may be overkill for what you're trying to do. Can you be very specific about what you want? Joe T.
  9. 3 points
    @Arnor, I think I've found the problem. Take the dll below and overwrite the one that exists in your installation folder. Make sure to create a backup of the original dll first. Please update me if it helps. Thanks. Unitronics.RemoteOperator.dll
  10. 3 points
    I´m not sure if this fits your needs:
  11. 3 points
    I'm convinced this is delusional. CDs were originally pretty bad because sound engineers failed to properly tailor the sound for the new media and instead used the equilization curves for vinyl with insufficient modification. That's no longer the case. Nowadays, the abysmal compression of MP3s may be worse than vinyl, but no one who really cares about sound quality should be listening to either compressed MP3 or vinyl. Vinyl necessarily has extreme equalization in order to achieve any bass response, necessarily lacks sufficient channel separation, and degrades every time the record is played. </rant> THIS I agree with wholeheartedly.
  12. 3 points
    This major release introduces MQTT, another piece of the Industry 4.0 puzzle. MQTT is a machine-to-machine connectivity protocol that runs over TCP/IP. MQTT joins the UniStream range of communication channels and protocols that supply the connectivity required by Industry 4.0 including SQL, built-in webserver that enables the controller to be accessed via any browser, and more. This release also supports new UniStream 5” models US5-Bx-R38 + US5-Bx-T42, offering new, built-in I/O configurations. Other important features in this release: HID Device support for devices such as scanners PostgreSQL support, in addition to SQL Server and MySQL UniApps localization for Korean & Italian, plus a new Korean virtual keyboard Read the version changes for more features at: https://unitronicsplc.com/software-unilogic-for-programmable-controllers/
  13. 3 points
  14. 3 points
    I've had a lot of local requests for help on getting email working. There are a lot of pieces needed to make it work right and it has to be done in the right order. A PLC was never invented to send emails, and the fact the Unitronics can do this is a pretty awesome feature. I'm posting a sample program we wrote to hopefully show everything needed and some tricks to make it cool. Joe T. Sample Email Program V570 5-6-15.vlp
  15. 3 points
    Great news, but twice as tall (or 50% taller) is what I need more. I have regular need for 12 contacts in parallel and constantly breaking them into two sets of six is a pain.
  16. 3 points
    What is the answer to this math problem: 7-1x0+3/3=? If you understand the PEMDAS rule you will get the correct answer of 8. However, if you just run the operations from left to right, you'll get 1. Every ladder rung in your program must be compiled to machine language before the PLC can execute the code. Do you know all the rules the compiler will use when you have a very large net? I certainly don't. Remember, like all computers, the PLC can only do one thing at a time and a large net can provide ambiguity (to humans) so the result can sometimes be unpredictable. To avoid this potential problem, always make your nets reasonably simple and break them into functional parts. It's also easier to troubleshoot and for another programmer to understand what you're doing.
  17. 3 points
    Ohh no, the old usb issues! 1 Perhaps Win 7 is now doing the W10 trick of updating drivers to whatever Msoft deems best, regardless of what the user wants/knows. I'm still on 7 and haven't encountered this yet, but I very carefully look at every update that is offered and find what it is doing. The immediate suggestion is if you have System Restore on, you should roll back to before the updates and see what happens. 2 I have had instances where a usb cable has suddenly broken a line internally. I'm assuming you have tried another known good cable in your attempts? In my instances the error messages you're getting were similar..."unknown but I know something has been plugged in." Murphy's law says that this failure is going to happen just after an update that will appear to be the culprit! 3 Have a good read of this entire discussion: In particular note the program I recommend: http://www.pro-it-education.de/software/deviceremover/ Edit: I have discovered this link doesn't work anymore. Can now be found here: http://www.softpedia.com/get/System/System-Miscellaneous/Device-Remover.shtml I have found it incredibly useful for removing dud drivers Windows squirrels away. If you haven't had luck doing 1 & 2, try getting rid of everything using it and start again from known good drivers. ONLY install them. 4 I am finding more and more devices that used to be serial connections, but are now usb in the same looking body. But lo and behold they have just added a prolific/fake chip onto the pcb so that it "looks" like the unit is usb to the user. It is essentially still serial and the onboard chip lets them get into it if they don't have serial connections available, like modern stuff infuriatingly doesn't. I have been exceptionally careful about what I allow to happen during the first insertion of any device that likely falls into this description. It is a minefield. Tread carefully! cheers, Aus
  18. 3 points
    This problem dates back to when the USB to serial adapters were first introduced. It is not a Unitronics-only problem, it's a Windows thing. I have experienced multiple instances of the same driver trying to access the same COM port when it comes to the USB interface. It is a royal pain in the butt and you have to rip them all out and start with a clean slate. The problem is you can't see them all, even if you check "show non-present devices" in the Device manager. There is an environment variable you have to set to truly "Display All Non-Present Devices". This article describes the process to get all your defined COM ports to light up- https://technet.microsoft.com/en-us/library/ff184583.aspx You probably have a bunch of stuff defined that you didn't even know about. Uninstall all the COM ports. Then plug your PLC in and see what happens. Joe T.
  19. 3 points
    Set the Border Thickness to 0, and the Background Fill to transparent (by either choosing the transparent color, at the bottom left corner of the Stardard color, or by entering 00FFFFFF in the Advanced Color)
  20. 3 points
    So I am sure that some of you may know factoid 2 already but I decided I would share the benefit of lots of testing with everyone. In our products we use the V570, V350 and the JAZZ units to talk to variable speed drives on a regular basis. Most drives come standard with 485 Modbus as the only communications type unless you spend extra money getting optional com cards for the VFD. Two factoids relative to noise. There was a conversation that happened accidentally in the "I have a new project" topic where someone said that Unitronics was very susceptible to noise. Well VFDs make a large amount of noise and it is not always radio noise. A fair amount of the time the noise is actually contained on the local earth to where if you ground the shield of shielded cable you make your noise problem much much worse than in you do not ground your shield. The old conversation about sometimes you have to ground a shield on one end or the other or not at all must be practiced regularly. Factoid 1: I generally would not recommend one brand of product over another but 20 years of use on pressure transducers have shown conclusively that there are definite brands of transducers that work dramatically better than others in noisy conditions. If the noise is radio noise pretty much every transducer is as good as any other. If the noise is carried on the local earth ground of the machinery then really bad things happen on every brand of transducer I have ever used (list to follow) except 1. We have used: Ashcroft Murphy Pepperl & Fuchs GEM WIKA AST Dwyer (all private labeled so there is one that works) and in 100% of the cases when there is a site that has noise infecting the ground because of VFD usage there is a horrible amount of noise created (it has nothing to do with Unitronics) and there is only one cure (separate the sensor from the metal pipe is it screwed into to isolate the sensor from the grounded pipe. If you ever have a site that has what appears to have an incurable noise issue and a VFD is involved unground the sensor and see what happens (pressure sensor just unscrew it and leave is unconnected to anything metal and if your noise issue goes away your grounded piece of equipment is causing your noise issue. So what is the one sensor that seems to be impervious to noise on the grounded pipe? It is specific to exactly one model and one product type only. The SETRA 209 series pressure sensor works perfectly where nothing else will (without lots of noise smoothing). AST is second best (but not as good as the 209 series SETRA) and everything else is just bad. Unfortunately, the 209 series is not NEMA 4 rated and is only suitable to outdoor use with the help of a cover to make a 3R cover. No other model of SETRA transducer works like the 209. Just as a note (if you are not needing Class 1 Division 2) there are companies that make electrically isolated pipe union fittings (for cathodic protection) and we have used these from time to time to help customers through ground noise problems. Factoid 2: It is in the Unitronics documentation but who reads everything (or remembers it over enough time). When connecting to RS485 it is not just important but absolutely imperative that you do not connect wires to pins 2,3,4 and 5. Even if the opposite end is connected to nothing at all (except 1 and 6). What testing has shown is that if any of the other 4 wires touch each other (because you cut them short) they will make an otherwise quite communication line unbelievably noisy. Also even if the ends are not touching the wires themselves act as little antennas and noise becomes worse. How do we know and not guess at this? Because sometimes we try to do what is right and it ends up being horribly wrong. One of our techs went out an sourced a high speed modem cable (shielded with shield all the way up to a metal sheath on the plug). It was not an inexpensive cable and sounded like a really good choice. We were buying 15 foot cables and then cutting this in half to make 2 cables (other devices have screw terminals for their connections and not an RJ12 (RJ12 for RS485 to get all 6 connections) so we would cut away all cables except the two making connection to 1 and 6 at the Unitronics port. We had 70 or so with these cables out and a high percentage of the build had special drain wire considerations that had to be made to make the communication work ok. New project with a different brand of VFD has come along and we build our first three units and zero of them would communicate over 485 communication connection. (we tested everything before build and it worked) WHY? The cable we were using had 4 sets of twisted pairs inside the shield (so two wires were not connected on either end). Testing on a V350 showed that as long as we had a computer connected to port 1 communication between the PLC and the VFD was fast and excellent TX/RX accuracy, but as soon as we disconnect the computer from port 1 communications would fail to a rate of about 75% packet loss (at slowest communication speeds). We tried different grounding of the shield to no effect, we replaced cables (didn't expect that one to work) to no effect, we took the test VFD from our desk and replaced that VFD with one in the constructed panels (no effect), so then just because there was nothing else to try we took one of the connectors that comes in the box for the V100-17-RS4X Modbus adder card and just twisted that to a standard 3 wire Beldon (really poor connection) and communication success went back up to about 99%. So we soldered 3 of the connectors from the V100-17-RS4X and shrink wrapped it all so that we could ship the 3 panels to their end customers. Then began the process of figuring out the whys and wherefores as to what the heck was going on. Taking new (expensive shielded) cable we stripped multiples back all the way to the metal cased plug and found that the manufacturer had done a good job on construction. We removed just the two wires that were not connected to anything on either end and found that removal of the two unconnected wires help com success rise to the 60% level. Then made sure that no wires were touching out of the remaining 4 unconnected wires and coms rose to a 90% success rate. Then we cut the 4 remaining wires to be about 1 inch long and made sure they did not touch anything and coms rose to about 96%. Then made our own cable with an RJ12 connector to have only 2 (totally unshielded wires with low twists per foot) wires and comes were great. So now we will be buying specialty cables that have only the two required conductors inside them. Thank for reading and I hope our pain can save you some. Keith
  21. 3 points
    Hello, I currenlty busy with a project Unistream 7" + 2x 8DI/DO and a EX-RC1 + 3xPT4x, 2x4AI2AO + 2xAO6. Followed the instruction on the webinar. What took me some time was that you have to upload a ladder programm with Visilogic to the EX-RC1. They don't show it in the webinar - because standard the EX-RC1 is pre loaded with a program - which has an auto configuration for digital inut and output. But when you want to use it for analogue input/output you should change it - by uploading the program in Visilogic withe the serial (9 pins) cable and RJ11 connector. When you follow the webinar - the example is shown for maximum of 16MI. In my case it exceeds 16MI - so I had to change the program. After a lot of 'trial and error' I came to a simple sollution by stripping most of rungs out - and only used the minimum of code. To get the second set of 16MI - you have to change the start adresse by adding 16 (so 1016=start adres first vector, 1032=start adres second vector), and bassicly follow the instruction in the webinar. When the first vector is sent/receive through the canbus MB0 and MB1 blocks the sent/receive off the second vector. I attached the visilogic file - feel free to use it - or comment on it - I'm not an experienced programmer so constructive criticism is welcome. EX-RC1 - example more than 16MI.vlp
  22. 3 points
    Hello Active Just did a simple test with Kepserver and selected the ”Modbus tcp/ip driver” Channel properties=>Ethernet settings selected port 502 and ip protocol tcp/ip. Added a device and named it device1 and for the model selected “modbus”. ID <>20 The V570 has this ip address and 20 is the slave number in my test situation. In the V570 socket init in my case socket 3 port number 502 and server(slave) followed by A Modbus ipconfig,selected in this function block socket 3 and gave it network id 20,time out 100 and retries 3 and assigned a function in progress mb. The indexes with slaves can be deleted using the clear link button. The next network has to have a “Modbus ip scanex” block and for the name in this block select the name of the Modbus ip config block. TCP card init was already done somewhere else in the program but you could follow the example explained in the visilogic helpfile and it’s called “configuring a modbus slave device”. In this example for the gateway you have to choose the ip address of the master unitronics plc but this is only needed I think if communication is between Unitronics plcs so leave the TCP settings in this block as they should be four your local network. For addresses see the example in the visilogic helpfile called “slave addressing” under Modbus ip. To test this all I started kepware opc quick client and added here an item “channel1.device1.40032” and here I can see the actual value from MI31 So kepware acts as a Modbus client and the V570 as a Modbus slave device in this situation. Did no projects with kepware and Unitronics but in our plant we have some Unitronics plc,s besides TI(CTI) PLC,s connected to Control Maestro(Wizcon) scada using Kepserver so this is why I could quickly made a simple test. Hope it will help you Regards Henny
  23. 3 points
    Receiving BMP file thru RS232 from fingerprint scanner and drawing it on the dispay: [media=] [/media]
  24. 3 points
    Big time thanks to Joe for his support, even thuogh sometimes I bug him when I am in a crunch, he always comes thru with an answer.
  25. 3 points
    A shepherd was herding his flock in a remote pasture when suddenly a brand-new BMW advanced out of the dust cloud towards him. The driver, a young man in a Broni suit, Gucci shoes, Ray Ban sunglasses and YSL tie, leaned out the window and asked the shepherd... "If I tell you exactly how many sheep you have in your flock, will you give me one?" The shepherd looked at the man, then looked at his peacefully grazing flock and calmly answered "sure". The man parked his car, whipped out his IBM ThinkPad and connected it to a cell phone, then he surfed to a NASA page on the internet where he called up a GPS satellite navigation system, scanned the area, and then opened up a database and an Excel spreadsheet with complex formulas. He sent an email on his Blackberry and, after a few minutes, received a response. Finally, he prints out a 130-page report on his miniaturized printer then turns to the shepherd and says, "You have exactly 1586 sheep. "That is correct; take one of the sheep." said the shepherd. He watches the young man select one of the animals and bundle it into his car. Then the shepherd says: "If I can tell you exactly what your business is, will you give me back my animal?", "OK, why not." answered the young man. "Clearly, you are a consultant." said the shepherd. "That's correct." says the man, "but how did you guess that?" "No guessing required." answers the shepherd. "You turned up here although nobody called you. You want to get paid for an answer I already knew, to a question I never asked, and you know very little about my business...... Now give me back my dog."
  26. 2 points
    There are a couple of I/O module that can you can directly connect a 100 ohm RTD to - the V200-18-E3XB snaps onto the back of the V700 and the IO-PT400 expansion module is similar to the IO-ATC8. Both of these modules return the temperature directly in 0.1 degree units, which probably what's confusing you. But this is not what you have in the Prosense (translation: Evil Empire) transmitter. You need to understand what you'll be feeding the IO-ATC8 electrically from the transmitter. It's not ohms. Let's lay it out: 0 F = 4 mA 300 F = 20 mA The IO-ATC8 is an A/D (analog to digital) converter that produces a number to the PLC based on it's input. You said you understand it's 14 bit, but do you know what that means? Let's lay that out, too: 0 mA = 0 counts to PLC 20 mA = all 14 bits on = 2^14 = 16384 counts to the PLC So your transmitter starts at 4 mA. This means at 0 F the IO module will return (4/20*16384) = 3276.8 counts, which it will round to 3277. At 300 F it will return 16384 counts. Read the Help on the LINEAR block, which includes some fun diagrams under the subtopic "Linearizing Analog I/O Values" So you set your linear block up like this: X1 = 3277 (point 1 input) Y1 = 0 (point 1 output) X2 = 16384 (point 2 input) Y2 = 300 (point 2 output) Map X to the register assigned to the channel on your IO module and Y to whatever MI you want to use for the output. If you still need help post your program. Joe T.
  27. 2 points
    Dan- You are really going to be freaked out when you realize Unitronics allows multiple coil stacking and curvy logic joints- If your primary focus has been the various flavors of RSLogix, I totally understand your irritation with the Unitronics way. After I originally read your post I considered the packages I've also programmed- AB SLC500 + uLogix, PLC 5, RSLogix 5000, Omron, Mitsubishi, Idec, Siemens, and the Modicon x84 series. As you state, it seems to be a toss-up as to rung-starting methodology. None of them were especially difficult to figure out with the exception of Omron, with it's little key-initiated edit/insert mode that's not really explained anywhere. And no subroutines, just a continuation of segments. I hated working with that product. In the BeforeTime, when there were only two real PLCs in the US market (AB and Modicon), it's interesting to note that AB always used the rung-and-branch method while Modicon used the 7 x 11 network method. You could have up to 7 contacts hanging on the rail with interconnecting logic This was the comment that raised my eyebrows- Especially on your first post. This software is free. All of it. Always has been. So is the forum. And support requests. It does work, albeit with some quirky nuances. I was just quoted $950 for an additional FactoryTalk View ME license to allow me to program the $5,000 PanelView Plus I just bought. Add that to my $800 annual TechConnect contract. It's one thing to pay for software, it's another thing to get totally bent over for it. Hopefully you can get past the software weirdness and find the product to be a good and cost-effective solution. Joe T.
  28. 2 points
    Hi, 1). Vision reads bar. 2). Vision executes bar entry routine. 3). Vision proceeds to bar. 4). Vision reads different codes. 5). Vision interprets codes, runs decision-making subroutine. 6). Vision waits for a while accepting results of decision-making sub. 7). Vision leaves bar sub.....somewhat unsteadily. 8). Vision attempts to run main program normally, but errors appear out of nowhere. Sorry JT. Couldn't help myself. You'll get a serious answer soon from someone who really knows how. cheers, Aus
  29. 2 points
    Any news on a possible release date for the PDF format Unilogic manual?
  30. 2 points
    I've never done it, but I thought you could run a full-blown webserver off the SD card in the Vision line. No question though that UniStream is more powerful in that regard.
  31. 2 points
    Cool. I've been round and round with the Server/Client quandary in my Modbus TCP adventures in figuring out Master and Slave. One way works. The other doesn't. Joe T.
  32. 2 points
    Totally separate animals. Remember, the UniStream is a Linux-based box and there are a whole lot of things that come pre-programmed in a Linux kernel that the Creators didn't have to re-invent to cram into a standard micro-controller as found in the Vision series. With greater power comes further complexity in development. I still prefer the Vision for most systems as it has a much smaller learning curve. It's main drawback is communications, which the UniStream totally excels at. I wouldn't have a frowny face on the Visions. Just know where each product fits best. To answer your questions: No. No. Depends on the application. Joe T.
  33. 2 points
    Hi, You can create a kind of "message box" using a rectangle and some variables on top of it. configure to each one of them Visibility bit. then when you wish to show this message box set the visibility on. Once the operator chose his option you can reset the bit and the message box will disappear. you can do the same with custom control.
  34. 2 points
    Ok--I get it We have a version release coming up quite soon. At this point, the product and the Help are quite mature. The pdf manuals are actually the same material that is in the Help, just arranged in the hierarchy that is traditional to print - and I do know that many people do prefer to sit down with a manual. I will make this a priority, right after the release. and they will be accessible in the site. BTW - here is the Timers document, if anyone is interested, which I just sent to Andrew. In addition, we have an overhaul of the Youtube channel planned, so that material will be easier to find for those that prefer a video. Happy weekend, people--yup, it's the weekend over here! UnLogic Timers.pdf
  35. 2 points
  36. 2 points
    OK. 1 Have you tried another type of usb device in the same socket on the PC? Anything at all that previously worked ok. 2 In the same vein, have you tried using another socket on the PC? 3 Re the broken core, yes...it makes no sense that the system still recognises a plug insertion with one line down, but that's what happened, and happened a few times. I don't know the mechanics of the usb process enough. A new cable and away it went. I am not at all hard on cables, but I do know there are many different construction qualities out there! 4 Go back even further on system restore....as far as you can? Maybe it wasn't the update? It still reeks of driver issue. cheers, Aus
  37. 2 points
    Hi, even on programming languages like c# it's incorrect to show a view from code (for example a messagebox). Message boxes are usually required for a user input, and are in most cases 'code blocking' (The next command will not executed until the message box is closed, since it is waiting for a dialog result). In UniLogic, message boxes are shown in a response to a user interaction (clicks, for example), and the result of the user interacting with the message box is clicking on one of the buttons (OK/Cancel/Yes/No) is executing 1 or more actions defined by the programmer. This is the correct way or writing UI. I don't know the reason you want to show a message box, but for example, you want to show a message box like: "Temperature is over 80 deg), and you want to call it from Ladder. In that case, I would choose Alarm for several reasons; * Not blocking UI and annoys the user * What happens if the deg reaches 81 and then falls back to 70 and then again reaches 81? Should another messagebox open while an active one is already opened? * If the message box is designed to set a big when the OK is clicked, and the calling function is no longer running, what would you expect to happen? We do want our user to keep a separation of UI from logic (You won't see any "Load Screen" elements in Ladder, but we do give a Load Screen global action which can be triggered from a bit). A workaround for what you want is to have an overlay of something that looks like a message box with the texts and buttons that you want, and control it's visibility with a bit. (You can also design it as a custom control, so you will only need to set the visibility bit once, on the entire instance of the custom control) Another workaround is to design the whole message box as a screen, and load the screen when the bit is set (the global action will automatically reset the bit), and when done, use "Last Screen" action on the clicked button in order to return to the original screen.
  38. 2 points
    OK, Fixed. On next version, when you import a table from Excel, if the struct contains only strings, then UniLogic will consider empty rows as data. Now if your table has 10 rows and the Excel file has 2 rows of data, then UniLogic will import 10 rows, where the last 8 rows are empty. If the Excel file contains for example 12 rows of data, then it will only take the first 10. When the struct contains any non-string members , then UniLogic will take the num of non-empty rows. If for example, the excel has 2 rows of data (and the data table has 10), then only the first 2 rows will be overwritten. If the excel file has 12 rows of data, then only the first 10 rows will be taken. If you are converting an excel file to UDTF, then UniLogic would detect if the struct contains only string members, and if so, it will open a dialog for asking how many rows to convert to udtf.
  39. 2 points
    Here is how I ended up solving it. This application changes the display brightness by touching and sliding the Bar Graph left or right. The ladder logic would need to be adjusted for the actual coordinates of the slider bar. Note that I check to make sure the correct screen is being displayed and that the PLC is not in INFO Mode.
  40. 2 points
    An HMI button is like a regular input - it will be on as long as you hold it. If you only want something to happen once then use the transitional. Only call one subroutine per network. I did a search on the coils you're resetting and found you are still using them as a regular coil. Don't do this; the logic driving the regular coil will always win. If you just want the extract and retract to be complimentary then drive them with a NC of the other. I don't see anything calling your Manual subroutine, but when you do call it O0 will go off regardless of what O0 is doing, unless the clamp MB 10 is on. Then it will go on or chatter. Use MBs to communicate between subroutines, and put all your outputs in one subroutine. I like to put one output per net and stack them in order. If you're going to use Sets and Resets, make sure you keep track of where they turn on and off. It's easy to get lost with this kind of coding. I've also attached a state machine example of how to code. This method uses a numeric pointer to jump between steps and limits what can be done in each step, as only one step can be active at a time. It will require you to re-think your program but it's way easier to troubleshoot. It really helps if you draw a flowchart of your program before you start writing it. Joe T. 1311-1 JT-SRP 1.vlp State machine example.vlp
  41. 2 points
    There is an example for PID loop in U90 ladder called "PID with motorized valve". You should check it out. Idea is to have a register that will contain virtual "position" of the valve expressed in 1/10 of a second (you need to know time it takes for valve to fully open from closed position, this will be PID max output). You will then compare this value with the PID output, if it is smaller than PID you open the valve, if it's larger you close it. You should have a small deadband. If output for opening the valve is active you increment virtual position register every 10ms (SB7). If output for closing is active you decrement it. I used this before with Vison and Jazz controllers and it works well.
  42. 2 points
    Move those operand addresses FIRST before exporting.
  43. 2 points
    I would like to start with many compliments on the Unistream Product. Yes it is a huge cost savings from other comparable products out there, but the horsepower really comes to light when using the data tables, FTP interface and the USB DOK tools. Not only can you accomplish a lot of traditional tasks with these units, but you can work with data and share this data so easily. Thanks. There are (2) enhancements that I think go together that would put the icing on the cake. 1st, we need at least (2) dimensional arrays. You have sort functions for arrays, but with only a single dimension, I typically need to have another field that is associated with the sort field. 2nd, having a sort function for data tables would be so powerful. Being able to run a Min/Max sort on a column so the data table can be organized based on a column sort would provide more capabilities with data tables. As a note, I cleaned up the Num to String UDFB to eliminate the space allocated for the +/- sign when neither are used, finished the 0 fill feature and increased the number of digits so double integers can be converted. Again, nice product and this only looks like the beginning.
  44. 2 points
    I've passed your requests to The People In Charge--thanks :-)
  45. 2 points
    ofer.yishai, I've found a workaround to the timer bug. The timers are being triggered on the Initial Ladder Cycle when active on bootup. If you place an inverted contact for "General.Ladder Initial Cycle" in front of the timer logic, then the timer will behave as it should (reset on bootup without triggering the Out bit, and continue timing).
  46. 2 points
    If you convert from BMP to PNG then no alfa channel is define. So first you need to use the command color to alfa. I recommend the software GIMP (it´s a free software and very powerful). You can find a lot of YouTube tutorial about adding transparency to a PNG using GIMP. If you need more help please send me an email to : ober.yela@Imapsa.com I can send the links.
  47. 2 points
    Hi Flex: I understand you are going to send MIs between 2 V570 (or Unitronics PLC´s). You can send the 160 registers in one action (but only if the 2 PLC´S are Unitronics). You need to use the Read/Write Mixed Data (you can send a max of 240 MI´s) in a single action command. I only use the Read/Write Mixed Data if working with Unitronics PLC´s. If you need to communicate with 3rd party then use the standard commands.
  48. 2 points
    Hi, first of all, thank you for your feedback. A password element has been implemented and it will be in version 1.4 of UniLogic, so that saves you the trouble of comparing strings just for password. (The new HMI password element lets you define a set of actions for Fail and/or success of password entry). As for comparing strings in ladder, you are right, there is no built in function for comparing 2 strings (So I'll ask for this feature), but it does not mean that you can't do it... Assuming that you have 2 strings then there are 2 solution: Solution 1: * Compare strings length * if lengths are equal then use "Find Substring" of 1 string on another. If the result is 0 (meaning string1 was found on index 0 on string2) then both strings are equal.... I don't see any option that this number will be possitive. It can only be 0 or -1 (meaning not found), since boths strings has the same length Solution 2: * Use Find Substring of String1 on String2, and then use Find Sonstring of String2 on String1.... If both results are 0, then strings are equal. (If the first result gives you a negative number, or any number greater than 0 then strings are not equal, and you don't need to do the second comparison).
  49. 2 points
    This is more of a programming style question. Your batch can be broken down into a definite sequence, and I find the easiest way to program a sequence is to make it into a "state machine". You start by drawing your sequence as a flowchart on paper and assigning step numbers to each operation. Then use a pointer in the PLC with equal blocks to only allow one step (state) to be active at a time. You will define a state that adds each ingredient and jump from one state to the next to add additional ingredients. I have attached an example. Joe T. state machine batching example.vlp
  50. 2 points
    Can we please get a functional chart of the PID process along with the equations involved so that we can better understand what is happening behind the scenes. ALL other PLC/Motion Control manufacturers publish this information so that a clear understanding of the structure can be had. The auto tune feature rarely provides satisfactory operation and there was no means given to favor steady state response or step response depending on the needs of the application.
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