Change gearing sign (reverse slave axis)

Hello,
I am building a precision winding machine: the mater motor controls a cylinder and the slave motor movese the head with the wire. The objective is to wind the wire in a 3d helix. I am using a cRIO 9022 with two NI 9512 drivers.
The problem is that I need to be able to change the gearing sign, so that I can do clockwise and counterclockwise helixes but always move the master motor (and the cylinder) in the same direction (the winding machine is built so that the wire should only be pulled in one direction).
I have tried reversing the sign of the numerator in the gearing VI to get the slave motor to move in reverse but this does not seem to work. The only solution I have found is to reverse the motor phase by swapping the A and Abar wires in the 9512 driver. 
I can attach a copy of the project if needed.

Looking at the SoftMotion Multi-Axis Gearing example (Function Block or Express VI versions), I do see the numerator with a negative value and the slave axis then moves in the opposite direction from the master axis.  I would expect this to work with motors as well as the simulated axes I'm looking at.
Some questions: 
Are you using SoftMotion? Which version of the software are you using?
Are you trying to change the gearing during operation, or do you set a ratio and run with it through the full operation?
It might be useful to see the project, as you offered.
Thanks,
Edwin!

Similar Messages

  • Master Encoder - Slave Axis Gearing (beginner's question)

    Hello
    In the documentation of this vi there is a sentance:
    "Note: The use of the term "rotations" here assumes that the encoders being used have the same number of counts per revolution."
    And what about situation when encoder 'A' (master) has 'X' encoder counts per revolution and this value varies from the resolution of the encoder 'B' (slave).
    These two stepper motors have the same resoultion.
    If I set the gear master parameter (in the slave axis B) to the axis A everything will work okey - I mean the slave axis will follow the master axis position at specified ratio.
    I use 7344 Motion Controler and NI-Motion 6.0 (May 2003 Edition).
    Thank you for your help.
    Best regards
    Peter

    Modo,
    What you have describes sounds correct. What you have to make sure of in this situation is that the differences in counts per revolution are taken account for in your parameters.
    A. Talley
    Applications Engineering
    National Instruments

  • Change of sign when running the data management package

    Hi All,
    I have written a script logic for copying my Budget member under category dimension to say another member say "XYZ" under category dimension and this is for my Member Sales under ACcount dimension having acctype as inc.
    When i run the logic thru default i am getting the correct value. however if i run the same thru data manager package- my sign changes.
    Eg. 100000 is copied as -100000 and -50000 is copied as 50000.
    Please help me out
    Regards
    Navin

    Hi Navin,
    CREDITPOSITIVE= YES | NO
    Default: YES
    If No, all amounts referring to an ACCOUNT type (LEQ, INC) will have their signs reversed.
    Since you are referring to the member account sales as INC the default logic considers the sign as reversed.
    Please look at this link which helps you to understand
    Significance of Account Type EXP,LEQ,INC,AST in BPC- Need some valid reason
    Hope this helps.
    Regards,
    Sanjeev

  • Sign reversal issues

    Hi,
    I have couple of keyfigures for which sign has to be reversed. i did that in query designer.
    Later on for other formulas, i need to use the reversed sign values of the above keyfigures for calculation.
    I understand that reverse sign is only applicable for displaying in report and the original value stands as it is.. Am i Right?
    is there any way that i could permanently change the sign so that could use the changed value in calculations?
    For example : I have a value of -10 for one of the keyfigure in BEx.
    I reversed the sign to appear as +10 in report.
    Now there is formaula to be written which is 20 *  10 (Keyfigure value that i had changed). Now expected value for this formula is 200. But in report it shows -200, though the Keyfigure value is displayed as +10.

    Hi,
    yes, the original values coming from your InfoProvider are always selected in queries. Your changes are applied locally in your column/row.
    For your purpose you have to write a formula with -1 * and you can use it for your next calculations. This formula can be hide and you can use it without displaying it.
    Hope it helps.
    Best regards.
    Simone.

  • Updated my iphone4 with ios6.1 software. App store is not working. Tried rebooting, restoring, changing date, signing with another apple id etc. but no luck. can someone please help?

    Updated my iphone4 with ios6.1 software. App store is not working. Tried rebooting, restoring, changing date, signing with another apple id etc. but no luck. can someone please help?

    I guess I will wrap this up. I have abandoned iPhoto and viewing my Photo Streams using it and moved to Adobe products (Bridge + PS). So that's that.

  • Change of sign while extracting data using Open hub

    Hello All,
    We are extracting data from Info cube to a file in the application server using Open hub.
    While extracting data, if there is any negative value for the key figure, negative sign is appending on the right side of the value(Eg: "123.67-"), which is the standard behaviour but I want the sign to be on the left side of the value (Eg: "-123.67") while extracting to the file at application server.
    Could any one please let me know if there is any setting to do this change ?
    Thanks in advance

    Hi,
    Changing the SIGN position from one side of the NUMBER to the other side can happen in following ways.
    1) After the file is place in the application server. Deploy a OS SCRIPT file (for .csv) for obtaining the required changes to the required COLUMN [Basis team will have more idea on this]
    2)This is time consuming idea. well deploy a routine at the Open hub -Infospoke level.
    Regards

  • Acrobat 9 (or 9.1) -- Script changes prevent signing -- any workarounds?

    I was having problems understanding the behavior of my form until I came across the document at http://www.adobe.com/devnet/reader/articles/reader_compatibility/readercomp_digitalsignatu res.pdf .
    My use case, which is a little convoluted, so could probably be streamlined, is that my application server presents a PDF to the user in a browser for them to review / sign.
    In some cases, I was getting the message "The document could not be signed."  with no other explanation (unlike many other threads which cite more detailed messages with a similar feel).
    After reading the section of that doc titled "Script changes prevent signing", I understand why since my form was making script changes
    So, now that I understand the situation, I have some options to work around it but presently none are great.
    The issue in a nut shell:
    1. The form is delivered to the browser, so the notion of save/close/re-open/sign doesn't make sense
    2. A button is on the form, with form submit on MouseUp.  This is the part that causes problems ... the application server is generating the (same) MouseUp action for ANY button and, at this point, I don't have a way to prevent that.
    3. My "illegal" script change was a Page Open script that replaced the MouseUp action to what it "should" be.
    4. The problem button is one that I want MouseUp to fire a launchURL instead of a submit.
    The workarounds I've considered:
    1. Replace the button with a link or non-button fields that has the correct actions.  Workable but not a great UI metaphor.
    2. Putting the "right" action on the MouseDown.  Also workable, but since this doesn't actually prevent the MouseUp from firing, it creates confusing user experience if I there are problems that prevent form submission (and I am not clear if the launchURL in fact prevents the form submission or not).
    Are there any other workarounds?  Is there any wiggle room on the restriction about no script changes?  The script that changes the MouseUp action is defined in an application level javascript file, so I tried making it trusted but that did not seem to make a difference.  I feel like
    I have a similar, but less import case for a true submit button.  I want to also send email on form submission, but since I cannot the form submission on MouseUp, there is no way for me to only send mail when the form is submitted (i.e. all required fields filled in).  So, I am presently always sending the mail in MouseDown.

    It sounds to me like the same option. Perhaps it also applies to non-PostScript printers now. If the printer is capable of good colour management (many are not); and if the PDF is properly tagged with source profiles, no reason why results shouldn't be good.

  • How to change the $ sign in a class name?

    How to change the $ sign in a class name?
    After compilation I get classes with names like abc.class, abc$1.clsss abc$2.class etc.. How do I get different names (without the $ sign) that will be accepted by my web host.

    Thank you, I found out it had to do with the actionPerformed(ActionEvent e) assignment,
    public void actionPerformed(ActionEvent e) {
    if (e.getActionCommand().equals("Subtotal")) {
    bla bla �..
    I will have to rewrite some of my source code. I gave you points, thank you again.

  • I cannot connect to an update for windows for adobe premiere elements 9 ar to change my sign-in. it gives me an error message 400 saying photo shop is unavailable. this makes the second day.

    I cannot connect to an update for windows for adobe premiere elements 9 ar to change my sign-in. it gives me an error message 400 saying photo shop is unavailable. this makes the second day.

    This is a user to user forum, not Adobe support
    Select a topic, then click I STILL NEED HELP to start Premiere Elements Online chat
    -http://helpx.adobe.com/contact.html?step=PRE

  • Change the sign-in email.

    I can't seem to be able to because the one I'm trying to switch to is already associated with a psn account according to PS. Please help. I really need to change that sign in email asap, if possible.

    You need another email address.
    Change the account that is squatting on the email you want to use, to the newly created email address.
    Then change the other account to the address you want to use.

  • Sign reversal not working in Web Template

    Hello,
    I have created a web template with the web application designer containing an "Analysis" web item. The query that I use as the dataprovider has toggled the property "Reverse sign" for all key figures.
    When I execute the query in the BEx all minus signs disappear and the figures are shown correctly with sign reversal.
    When I execute the web template though the minus signs stay in front of the figures; sign reversal does not happen?
    There is no property for the "Analysis" web item that allows me to control the sign reversal, so I assume that the web item fetches this setting from the dataprovider/query.
    Any idea what is going wrong there?
    Thanks to any answers in advance.
    Regards,
    Philipp

    Hi Heike,
    thanks. That note made things clear
    I think we then should update to SPS 09...
    Regards,
    Philipp

  • MAP change after GR reversal for subcontracting PO

    Dear experts,
    I am facing problem that the MAP of component changed after GR reversal for subcontracting PO. The posting date of GR is the same date with reversal date, lets say component A in accounting document during GR is $31 when reversing the MAP $19. FYI, I am using batch valuation. Does any body share with me, appreciate any responses.
    Best regards,
    mahnansa

    In accounting document is reflected the component cost was $31 while after reversal (MT 102) the cost in accounting document $19.
    Dear you mean to say during GR of subcontractiong accounting document price of that component is $31 and during Reversal of same subcontracting document GR it is showing $19 if my understanding is correct then there might be some other goods movements might have happened in due time which  could have changed the component price as it is a MAP so analyse the same in MB51.
    Cheers
    KK

  • Change price sign during copy from Sales order to credit memo

    Dear All,
    due to external system reasons we I need to manage one sales order type using not necessarily positive amounts.
    A custom logic (based on structural elements, tax information and sign of the amount) permits to identify the right billing type document to use.
    Example (using a simplified logic)  if the amount is positive the custom logic will determine an invoice.
    and if the amount is negative a credit memo.
    In VTFA copy rules has been defined but it seem that using transfer rules at item level (defined on VOFM) it is not possible to access and change the sign of the amount (net price will be enough) in order to have a negative amount copied into a positive amount of a credit memo.
    The following test has been done without succeed:
    custom routine on VOFM to change sign of VBRP-NETWR...but the price is 0 when the routine is called
    Using pricing type M - No effect
    Every hint will be highly appreciated.
    Regards

    Hi Sudha,
    The coding added in 101 is not enough to achieve your requirement, because of the fact that the VBKD-ZTERM will be filled again with the original value from CVBKD in the copy routine on the item level. (For example 102 for OR to OR in standard system)
    Could you please create another routine 902(adding the addition coding to 102) and replace it on copy control for item level?
    It should work then.
    Regards,
    Smile

  • PowerView; - How do I change the name of the Axis Labels please

    Hi,
    I am preparing a demonstration of PowerView. How do I change the layout of the PowerView report please, e.g. change the name of the Axis Labels.
    Thanks in advance,
    Kieran.
    Kieran Patrick Wood http://www.innovativebusinessintelligence.com http://uk.linkedin.com/in/kieranpatrickwood http://kieranwood.wordpress.com/

    Go to the "Sharing" Preference Pane in "System Preferences" and there is teh field at the top where you can enter/change your computer name.

  • The user's password must be changed before signing in

    I have set up a new laptop with a new of users. 
    One of these attempted to access their account, and was asked to reset their password however this screen has got stuck. The password they enter is correct (we have tried it on a different machine) but we just get the screen 'The users password must be changed
    before signing in'
    Can't get back to the start screen, can't try and login as a different user, and when I force a restart then the screen just comes back, and when I've left the battery to run down also the same screen comes back.
    When I can sometimes get the screen to go away then the screen is just blue (no markings of any kind, plain blue), and if I click or move mouse the login screen comes back.
    Any advice gratefully received

    Hi,
    Regarding current situation, let’s try following steps to check the issue:
    Step 1: Power the system off, remove the USB plugs for both the mouse and keyboard and move them to different USB ports. Power the machine back on and wait 2-3 minutes to make sure Windows has detected and set up the devices again.
    If step 1 doesn’t work, please try step 2:
    Step 2: Basically windows 8.1 stopped all the USB ports from working. Go into BIOS, for USB configuration:
    Changed it to Intel XHCI mode: Disabled
    Legacy USB Support : Enabled.
    Hope these could be helpful.
    Kate Li
    TechNet Community Support

Maybe you are looking for