chantecler

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Everything posted by chantecler

  1. Hi, I’m working on a project in which the process has some sequences that I believe I can program using the SQI and SQO instructions. I usually avoid utilizing the built in sequence instructions but this time I think they’re going to save me a lot of programming. My first question is: There are some inputs that I need to ignore in certain steps but I have to look at them in other steps. The problem is the mask is the same for all the steps and I don’t find a way to solve this. Any help? How do I tell the SQI that those inputs can be either 0 or 1 in certain steps but they have to be specific in other steps? Second question: I would like to set a time out limit for every step and want a different limit for every step. Any idea? I have been considering options like writing the ladder the way I usually do or learning SFC but I still think the sequence instructions are the best choice. Thank you.  
  2. Sequence Instructions question

    Thank you for taking the time to answer my question Mc. The platform is Logix 5000 In this particular case if any timer times out the outputs are going to change to a safe state and the operator's intervention will be required and the sequence will have to start from the beginning The operator will start the sequence the first time and it has to continue repeating automatically once it reaches the final step I also plan to add a "manual" option so the operator can advance steps one at a time. I still have to read your answer more carefully. At least I know that what I want to do can be done. I'm also going to consider using my own UDTs and AOIs. Thank you again.  
  3. MAOC instruction Question

    Thank you Emperor, every help is welcome.
  4. MAOC instruction Question

    I was using persistent and forward only, changed to continuous and bi-directional and it's working perfect. Thank you very very very much. I'm going to continue doing some tests cause I need to fully understand this instruction.  
  5. Hi Ken, Thanks for answering. This is my first time on this platform as well. I chose it because I'm doing a very fast servo application and was also asked to utilize a "future proof system" (my client said: "I want a new new system not a new old system"). Another characteristic that I like is the dual ethernet. I can have a CIP linear network on the A2 port and the HMI conneted to the A1 port. The only drawback I considered was that this product isn't fully developed yet. Regarding the new digital module data type I'm starting to believe that it was a very stupid decition or too deep for my understanding. Well, I'll keep on trying to build an application as simple and efficient as possible.  
  6. Thank you Picklemon,   That is the same I do for the 1769 io modules. But for the 5069 io modules AB created module defined data types that cannot be copied or monitored as a group (at least I don’t know how). I am trying to figure out the reason why they have done this … not success so far
  7. Is there any efficient method to copy the state of the inputs at the beginning of each scan? I just want to make sure that the values I utilize during the scan don’t change.
  8. I was searching for an example in the Sample Code Library and noticed that Rockwell Preferred Code samples are almost entirely faceplates. It seems that no other program in the library qualifies as "preferred code" I wonder if there is a guideline or something to follow to write "preferred code" Is there any written set of rules to follow that guarantees your code will be considered as "preferred code"? Is it actually relevant that your code be considered as "preferred code"? Any light?
  9. Linear servos

    Just to thank Will and Joe for their help and useful information. Happy Holydays Bye
  10. Dear colleagues, I have an applclation in which we want to replace an old rotational servo for a linear one. The application, of course, is suitable for such a replacement. I have done some motion projects using rotational servos but this time I am very confused about the different kind of linear servos (trhusters, linear stages, cylinders, linear motors, etc.) so I am asking you some guidence about where to utilize each one of them as well as its advantages and disadvantages. An explanation or a link to a source of information will be appreciated. Thank you
  11. Linear servos

    Thank you, I am going to study the material and the information from the links.
  12. Create a Long type data file like L9 (is the same as a DINT in RSLogix 5000) and move the ACC value to an element of this file like L9:0. This should work.
  13. I personally always set "Auto Start" and "Counting Enabled" to "1" when using HSC
  14. Tag Scope

    http://forums.mrplc.com/index.php?/topic/29045-controller-vs-program-scoped-tags/
  15. Hi, One computer where I was developing some Factory Talk View Studio Apps broke down, the hard disk is intact, I can see all the folders containing the apps I was working on. So far I’ve been able to retrieve the only app I have the .mer and the .apa files of and open it in another computer running FTV Studio. Is there a way to retrieve all the rest? Could somebody help me? Thank you.  
  16. Hi, You are probably working on Windows 7, it used to happen to me as well. Make a copy the RSLinx shortcut, chage its name if you like, edit it (right click – properties), add the command line “/service” and that’s it. I don’t remember where I found this information but it works for me. Bye  
  17. Hi all, I am servicing a car elevator whose lifting motor is being driven by a Powerflex 700 AC drive.  The elevator’s powerflex has been working for some years with "slip comp feedback" (par. 80). I've been asked to put the encoder feedback to work which has turned out to be an impossible mission. So far I have checked out: the encoder, the encoder board, the cables, the breaking resistor, the parameters, the tuning and almost anything you can imagine. I’m about to take me to a mental hospital. One thing that is bothering me is that the Powerflex in the twin brother elevator which functions perfectly has firmware version 6.002 and the one that refuses to work in torque-prove-with-encoder mode has firmware version 6.004. Any idea or suggestion? Could someone with tech-connect check if there is an issue with firmware 6.004 and torque-prove apps? I’ll appreciate it
  18. Dear cyber-friends, I found that some torque-prove related issues were corrected in firmware 6.008. I'm going to try either downgrading to 6.002 or upgrading to 6.008. I thank myself for responding to my post,    
  19. Hi all, A client of mine just bought RS Studio 5000 v21 and a laptop to have his own in-factory tool an also to backup all the programs that I have done for him. I have not installed the software on his computer yet. Months ago I upgraded all firmwares and programs from v17 to v20 using my own RSLogix 5000. My questions are: Can I open his v20 programs on his RS Studio v21? Can I download v20 to my client’s computer for free? I am kind of confused. Thank you
  20. Speed/ Velocity Calculation

    Hi hboyer90, Assuming the pulse frequency is high enough, you can use the Ctr(n)CurrentRate DoubleInteger which is in the input array of the HSC Module-Defined Data Type. The HSC module does the rate calculation for you, read the "Rate/Timer-Functionality" topic under "Module Operation" in the Compact High-speed Counter Module User Manual (1769-um006_-en-p.pdf). The counter’s configured cycle time has to be appropriate and you will have to do some scaling. In case the pulse frequency is low (which I suppose is not), you can measure the time between pulses and do some calculations. I confess I haven't done this myself but it seems pretty straight forward.   Hope this helps  
  21. An update The Studio 5000 package came with a DVD containing RsLogix 5000 from v12 to v20 so there was nothing to be worried about. (This is what happens for not checking). I ended up installing the software, backing up the applications, testing and leaving everything v20 since most CPUs were not upgradeable.
  22. All you need to know is in the  PowerFlex ControlNet Adapters User Manual 20comm-um003_-en-p.pdf Locate the rotating switches on the adapter and set the address 
  23. Ok, I misunderstood something. There isn't such a thing like Studio 5000 v20. In order to upgrade an application from v20 to v21 you must have both: Studio 5000 v21 and RSLogix 5000 v20. You open your v20 project with Studio 5000 which automatically invokes RSLogix v20 to open the application. The rest is straight forward as usual. In the controller properties dialog you change the controller from v20 to v21 and save it. Then you just have to flash your controller, download the new v21 application and that's it. Few controllers are upgradeable, see the appended .jpg. In this particular case I will only be able to upgrade the L24ER. I just hope I can download RSLogix v20 from the Rockwell website for free to my client's computer using his license, otherwise I'm going to have ask our Local Rockwell for help. My intentions now are installing RSLogix 5000 v20 and leaving the rest as it is Bye  
  24. Powerflex 700 software

      Hi, I personally utilize DriveExecutive Software which is a part of  the DriveTools Software and connect through 1203-SSS AnaCANda-Serial Converter (or Ethernet if the drive has an Ethernet adapter)  
  25.   Fantastic!    Thank you very much   I didn't know there was such a Studio 5000 v20