JRoss

MrPLC Member
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About JRoss

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    Propeller Head
  • Birthday 06/05/79

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  • Website URL http://www.rossautomation.net

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  • Gender Male
  • Location Dillsburg, PA
  • Country United States

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  1. sequential MAM moves

    The settings I'm referring to are hidden by default. To see them, you have to expand the MAM block. There should be a little arrow in the bottom corner. The help manual gives you an idea of what they do. If you post a screenshot of the expanded MAM blocks, I can help you figure out what they're set up to do.
  2. sequential MAM moves

    Depends on the parameters of the instruction. IIRC, you can set the move to either take over the axis, add to the axis, or go into the execution buffer pending completion of the previous move.
  3. Studio 5000 Data Preserved Download Tool

    Didn't even know it existed, I'll have to check it out.
  4. HMI, PC or what else to monitor?

    HMI vs SCADA depends on what you want to do with it. Generally speaking, SCADA is more complex to deploy, but gives you a lot more capability, though things have been converging lately. As in HMIs are getting more capable and SCADA is getting easier and cheaper. If you only need a display at one location (especially if that location is on the production floor) and don't need a historian, I'll second (third?) a Red Lion HMI.
  5. Micrologix 1000

    +1 on posting the program. If the output light is on, it's almost always on in the program. Yes, there's a slight chance it's hardware, but if you transferred the program to a second PLC and got the same behavior, you've eliminated that possibility.
  6. Unused Tags Search

    I haven't really tested it with other HMIs, since the only times I've used a non-AB HMI with an AB PLC are new installations. If I had to guess, I would think that the brand of HMI doesn't really matter. I think the PLC simply recognizes when an outside source accesses a tag and flags it so you can't accidentally delete it. It's not a perfect system, and if anything it's overcautious. It's common to clean out a program and still have a handful of tags that it won't let you delete online just because at some point in the past something tried to access it.
  7. Servo JOG mode vs Speed Control mode

    I don't think there is a functional difference between a Jog and a Speed Control mode for something as simple as that.
  8. Unused Tags Search

    In RS Logix 5000, open the tag database and select the filters at the top. There is a filter for "unused". I use it all the time to clean out programs. But as Michael said, be aware of tags that may be in the PLC simply for use by the HMI. If you do this online, the software won't let you delete tags that are used by the HMI.
  9. Panelbuilder 32

    All of AB's software downloads are available at this link: http://compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx It looks like Panelbuilder32 is not free, but login and see. I have a toolkit, so I get access to everything and can't test it myself. I seem to remember a period of time where it was a available for free from a different location on their website, but they appear to have taken that down.
  10. Brewing station

    Another mantra.... save everything. Digital storage is a lot cheaper than all the time spent re-inventing the wheel. I add an "Archive" folder to all my project folders where I put old versions. I create new copies anytime I start making sweeping changes, just in case I want to roll it back. I also create a new copy anytime I make any changes after I've sent the program to a customer. That way I can roll back to the last known working version if my changes don't work out. Has saved me a number of times.
  11. Mitsubishi a2ccpu

    That's the adapter I use. I suspect there is a machine setup screen that lets you select metric versus SAE, and that the default is metric. Unlike AB, in Mitsubishi a saved program doesn't necessarily include data memory, and it doesn't get downloaded by default.
  12. Mitsubishi a2ccpu

    I have had some difficulties with GX Developer on Windows 7, and usually end up using a Windows XP virtual machine to run the software. I just used it yesterday to upload an A2S.
  13. Mitsubishi Analog

    Yes. The FX Programming Manual Analog edition has all the details and some sample programs. I would recommend you take a look at that. But here's some points to get you started. 1. Data and settings are passed between the PLC and the module using the TO and FROM instructions. The manual has a list of the Buffer Memory locations on the module that you need to interact with. 2. The head address of the module you use in the TO/FROM instructions is based on the module's distance from the PLC. If it's the first Special Function Module (SFM - anything that's not digital I/O), then it's address 0. The second SFM is 1, and so on. 3. The data coming from the channels is a raw digital value that you will have to scale. The value range depends on how you set up the input (current/voltage, etc.), and you will find the range in the specifications section of the chapter on that card. I believe it's 0-4000 for 4-20mA. 4. You will, at a minimum, need to use one TO instruction to set each channel to the correct operation, and one FROM instruction to read the raw value.
  14. Retriving info about PLC ?

    Which Allen Bradley PLC? What information are you trying to get?
  15. Use the FTView Transfer Utility to upload the runtime, then use the FTView Application Manager to decompile the runtime into a project, then use FTView Studio to open the application and make the changes, then compile the project as a runtime and use the Transfer Utility to download it to the HMI. When you say four applications, you mean there are four different runtime files on a single PV+? Only one of those is actually being used, the one that's listed as loaded on the main configuration screen. That's the one you want to use. The others should probably be deleted to avoid future confusion, though I would tend to save a copy on a computer somewhere just in case.