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Hannari last won the day on April 16 2015

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  1. Hello. I have a program that isn’t that large but is repeated multiple times for multiple devices of the same type. I wanted to make a UDFB were I would only have to pass in a struct of the device but because I have to use Negative and Positive Transition Contacts many time throughout the program then I have had to have each device in its one Region. Isn’t there a way to use PTC and NPC inside UDFBs? Regards
  2. Hi, I am wondering how to send two or more SDOs, one after the other. In attachment is a image of how I have been trying to do it. It awys just sends the first one in the network. I have tried putting them in series, parallel and in different rungs. I realize that the setup i have is not working out because, while the first one is sending then the "SDO in progress bit" goes high and then it skips the other one. Is there an easy way of doing this? Some thing that would trigger the second one to go of as soon as the first one is done.
  3. Hi Ofir, I set the node id on a software via RS232 and save it to EEPROM on the Mc. I don’t think it is possible to change the Node id using SDO, I at least don’t know how that would be done. I will send you my code, the EDS file and a step-by-step description with snapshots of the CAN sniffer as I went through and trouble shot. Thanks again for your great support.
  4. A Frequency measure Fb. would be nice. It would take in an input signal and a period to measure over and it would spit out the frequency of the input. An idea regarding an app, have a programmer-calculator where you could calculate in Hex, Dec, Oct and Bin and convert between them. Another suggestion regarding UniLogic is to have the option to undo. At least until then prompt up an “are you sure window” when you delete tags. I exedently went too far down when I was going to delete a tag that I wasn’t going to use and instead I deleted an array of about 30 ints that I had put a lot of time in to naming each one and given them initial values. When hovering with the mouse over an element e.g. you hover over the “A” on an Add block it pops up with an explanation of that it is expecting. The time this pop up window appears is very short. It should stay on as long as you hover over the letter so that slow readers like me can read it. The same in the tools menu when you hover over an Fb. Perhaps a tool that would automatically IO-map PDOs and SDOs from the EDS. This is a very handy and time saving fetcher that I miss from Codesys. Enough with the complaints and “Mr. I could do it much better” . You have done a great job. I love the UniLogic programming environment, have been working on Codesys and this is nothing short of it. Much simpler end easier to learn. Regards, Ari
  5. I am trying to get CANopen communication going between my Unistream and a Motor controller (Mc) of type MDC1460 from Roboteq. I set the PLC to be node 1 and the Mc to be node 2. I set the Mc to send out a heartbeat every 1s. I then tried to send a NMT and SDO, but nothing happened. Then I tried setting up a Can sniffer to see if I was resaving the heartbeat. I saw in the sniffer that the identifier was 720. Meaning that the node was number 32 in decimal even though I had set it to #2 on the controller. But if I then power cycle the Mc and then it sent 702 after boot up. If I then reboot the PLC again it resaves 720 even though the Mc stayed on the whole time and no change was done to it. The weirdest part is that I’m not getting any control unless I set the Mc to be node number 32. I can send NMTs and SDOs, no problem, but as soon as I change the node id to 2 or any other number for that matter, except 32, I get nothing ??? Their suggestion at Roboteq, is that I should try setting the node id over RS232 instead of USB. I will try that tomorrow and see if it helps any. I am just not so sure any more. Is it me , is it the Mc or the PLC that is the problem or some combination? Could it be that the PLC is sending some object that makes the Mc behave in this manner? Is there something I´m not getting regarding the heartbeat or some other part of the CANopen protocol that could be causing this problem? O… and by the way I tried the same program on a load cell amplifier I had with no problems. I could set it to any node number and send it both NMTs and SDOs. Sorry for the long and tedious post, but does anyone have any suggestions that could possibly get me on the right track again or somewhere at least close?
  6. I will be getting the input through CANopen. The sensor, senses a spot on a turning wheel once per rotation. I will increase those spots if I see that I need higher resolution. I have been trying to do what you are suggesting Alexander, with incrementing a counter and timing it. However, I am not getting it to work. I was going to use an encoder in the beginning but thought it would both be simpler and cheaper, just to count the revolutions using an inductive sensor and a metal bolt in the wheel since I do not need that high resolution. But after finding a 400-pulse encoder for $13 in China I have gone back to my original plans. Now I am just waiting for my new encoders to arrive. Thanks for the hint on the Struct issue. So if I want to have some values retained while others would go back to a preset value at power-up. Do I then need to make two Structs, one for the retained ones and one for the power-up/initial tags?
  7. Thanks a lot. Now all I have to do is what for the controller to arrive and then I can test this.
  8. Hello, I have a remote IO device that among other things has a digital input that’s connected to an inductive sensor that is placed so it measures a point on a wheel. This is then transferred to my UniStream through CAN. Now I want to measure the frequency so I can then calculate the RPMs and linear velocity. I have been using Somachine (Codesys) where there is a simple frequency measure block dedicated for this. I cannot find one in UniLogic and have been trying whit various contacts, coils and timers with no luck. J Any Ideas how I can do this? Another question, can I not retain tags that are inside instances of structs? I will have multiple IO units like this one that I have made a struct of with around 40 tags. Many of these tags I need to be able to set at the HMI and keep after reboot or power failure. I cannot believe that it is not possible! Please Help. Best regards, Ari
  9. Hello, I am trying to setup TPDO and RPDO for a motor controller that I am working on. It seems that I only can make Time, PID and RTC type Tags (see pic1). Is it only me that does not understand how this works or is there a glitch in the software? The T and R command mapping tables for the controllers can be seen in pic2 and 3. I am totally new to Unitronics and relatively new to CANopen so maybe I am mistaking, but is it correct that I set the nodes in the way seen on the attached picture 1? I set the plc as master by giving it node ID 1 and the motor controllers 2 and 3? Best regards, Ari
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