Position profile

For my programme, I need to generate a motion to a target position with a target velocity(ie i do not want the motor stop at target position, instead continue with moving in a constant velocity) in a specified time. Would you advise me how to do it and which vi is the best choice?
FYI. I'm using PCI-7342, stepper motor and using labview 7.0.

Thank you for contacting National Instruments. From your description it sounds like you simply want to make a velocity move where you specify a velocity, acceleration, and deceleration and then your motor will continue to move until you programmatically or manually stop the movement.
If you have not already looked at them, there are a number of shipping examples that are included with NI-Motion. These examples can be found by going to the Help menu in LabVIEW and selecting "Find Examples..." When the NI Example Finder opens, you should choose to browse by directory structure and then navigate to Motion >> FlexMotion. Here you will find a number of examples, with some basic ones under One Axis.llb.
Also, I have included a link below to an example on our w
ebsite that shows how to perform a Constant Velocity Move:
Constant Velocity Move with LabVIEW
With these moves you can still monitor the encoder so that you know when you have reached and passed your target position. If this does not answer your question or if you have any more specific questions then please let us know.
Regards,
Michael
Applications Engineer
National Instruments

Similar Messages

NI Motion assistant Position Profile

HiI am trying to use NI motion assistant to generate position profile so that I can output to ESP300(Newport stage controller) for UTM500cc.1(not supported by NI I guess).
The thing is when I convert the Labivew code, it looks there no way to get position profile from the vi. I need to have the NI hardware to run that vi too.
Is there any way to get position profile from NI motion assistant?
Brad
Solved!
Go to Solution.

Hi changlin!
Have you tried the Get Straigt Line Move Profile VI available on the Motion Assistant palette in LabVIEW?
Kristen H.

Position Profile Page Link Location from Organisational Overview

Hi all,
In the organisational overview MSS page we have links from the Position Holder inner iView. If the link to the position is clicked, it loads the position profile - but it uses the position profile oage located in standard content (as per the below link):
http://<server address>/irj/portal?NavigationTarget=ROLES%3A%2F%2Fportal_content%2Fcom.sap.pct%2Fline_manager%2Fcom.sap.pct.erp.mss.bp_folder%2Fcom.sap.pct.erp.mss.pages%2Fcom.sap.pct.erp.mss.hcm%2Fcom.sap.pct.erp.mss.position_profile&WebDynproNamespace=sap.com/mss~ppro&WebDynproApplication=PositionProfileApp&DynamicParameter=sap.xss.popup%26sap.xss.menuhdr%3DSAPDEFAULT%26sap.xss.menusrv%3DMSS_OPRO_POSHOLDERS_TRGT_PPRO%26sap-epcm-guid%3D3CB76B26382863D7CE27ECFE78160E0B0C0C59637D21737B47C63BD9B01C53BA%26sap.xss.selectedObject%3Dsap.xss.sessionKey41&CurrentWindowId=WIDDefaultExternal1286460270340&NavMode=3
How is the destination Page changed so we can connect to standard content? Does it require FPM change, or is there another mechanism for determining it e.g. OBN, and if so, how can this be configured?
Thanks in advance!
David

Thanks Siddharth!
From what I read, FPM applciations cover the internal iViews only (i.e. that wiki discusses the internal iViews). What I am looking for is the outbound hook to an iView for another application (I guess this could be anything, but in this case it is the position profile). However, I could understand how this is used.
As we don't have the SSA BP (yet) I would like to confirm this is the steps we would need to take?
1. Is the information passed to the other link via the FPM application configuration like this?
2. If not, how are those links generated?
Thanks in advance,
David

MSS -- Organizational and Position Profile

Issue is with the Position profile and the Organizational profile in MSS.
1. For Organizational profile, data is available at backend for General Description for Org unit, but the data is not displayed under MSS in the portal. (the resource etc has been checked in IMG and appears to be OK, other sub iviews are populated)
HRMSS_RFC_ORG_DESCRIPTION returns the correct values in the back-end HCM system, but the iview is empty.
2. For position profile, we are unable to view data in the following iviews, *General description, *Compensation and *Employee Group. Data is maintained in the backend HCM system for this position (see example screen-shot below).
No OADP configuration changes have been made.
Any input greatly appreciated.

check portal customization
link iview to page, role etc properly

MSS- Position Profile - No hyperlink

Under MSS --> Organization --> Organizational Overview
1. Organizational Profile - I am able to see the position details when selecting hyperlink for position from Position Holders.
2. Position profile - I should be able to see the same information, but there are no hyperlinks available when I select the Position profile.
Is there any specific configuration that needs to be done to populate data onto this iview.
Help appreciated.

yes you need to these steps to resolve this
In order to resolve the problem, please perform the changes as listed
below. Please be advised that these changes has to be done manually.
1) Change the value of the Iview property "Group of Organizational
Structure View" of the Position Profile Search Iview into "
MSS_POS_SEARCH ". Please be advised that the text is case sensitive. The
Other two Iview properties "Organization Structure View" and
"Organizational Structure Views with List Display in Navigation Area"
should be left empty.
The standard delivery of the iview:
"com.sap.pct.erp.mss.posprofile_positionsearch" is available under the
following PCD path in the Portal.
"pcd:portal_content/com.sap.pct/line_manager/com.sap.pct.erp.mss.bp_fold
er/com.sap.pct.erp.mss.14.bp_folder/com.sap.pct.erp.mss.14.roles/com.sap
.pct.erp.mss.manager_self_service/com.sap.pct.erp.mss.manager/
overview/com.sap.pct.erp.mss.organization/organizational_overview/
com.sap.pct.erp.mss.position_profile/com.sap.pct.erp.mss.posprofile_posi
tionsearch"
2) Changes to the OADP column in the backend system as mentioned below.
a) In the View: V_TWPC_COL_ERP
b) Choose the column: ORG_STEXT
c) Check the "Event-Link" check box

How to obtain position/profile in CIC0 programs.

We have a requirement where we need to allow restricted access to the CIC0 programs depending upon the position/profile with which the CIC0 was logged in. Is there any way by which we can know the profile/position in any of the CIC0 programs.

We already have profiles and assigned positions. While using CIC0, we get a pop-up which lists the positions assigned to a user and the user selects any one position to log in. After logging in, when the user accesses any program from the action box, we would like to add an authorization to check if the access to that program is allowed for that particular position. Here we need to read the position with which the user had logged in. Is there any database table, system variables, or FMs from which the current position can be read.

MSS - Position Profile - Link

Hi All,
I would like change ivew path from Standard iView to custom iView for Position Profile Link in MSS-> Organization -> Position Information Application.
FYI : I am using MSS Addon Application which are based on WDA and FPM.
I belive that This link can be configred in the backend system.
Please tell me where to be defined custom iView pcd path for Position Profile Link.
BR
-SS

Thanks both for your replies.
@ Siddarth
I have checked help link it is not very clear where to change from standard to custom FPM configuration (ZHRMSS_POSITION_PROFILE_OIF).
Could you please tell me where exactly need to be given custom configuration name.
Below Point is not clear :
This service is also called through the object-based navigation using the method launch_profile of the business object PositionObject
@ Sahir
As per requirement i have to remove Working Time UIBB from HRMSS_POSITION_PROFILE_OIF. For this i have made Z copy and removed the same. This is calling from on click of Position Profile link from Position Information (First Screenshot).
So here my Question is how to link custom ZHRMSS_POSITION_PROFILE_OIF onclick of Position Profile link of Position Information Application.
BR
-SS

Position-Velocity-Time vs Position Profile

Hello,
I have a
question concerning the behavior of position profile and PVT contoured move.
In the topic
“Position Profile-Motion Assistant Help file” says:
“Position
profile moves give you maximum control over the position of the move …”.
And in “Position/Velocity/Time
(PVT)-Motion Assistant Help file” it says “PVT moves give you maximum control
over the velocity of the move at certain times throughout the move.”
So, it’s
correct to say that the position generated by a PVT based contoured move is “less
accurate” than the one generated by a position profile in respect to the
original data points?
If yes, is
there any way to know in advance maximum position error?

Hello DJ L,
The PVT
examples work fine. I’m using Motion Assistant 1.2.
I’m trying
to do a 2D move that have 2 different velocity profiles. I only have XY
coordinates, the maximum cruise velocity and the maximum acceleration that my setup
supports. One profile is used for straight (or almost straight) moves and the
second at a much lower speed in curves.
I think
that what is causing my problem is a constraint that is out of range like you
said. I managed to get a few points to be plotted by Motion Assistant. But the
resulting velocity profile is unacceptable for this application (see file
Profile1.png and PVT_Profile1.txt for data). Adjusting the time index by trial
and error I get a more appropriate velocity profile for my needs (see file
Profile2.png and PVT_Profile2.txt for data). The constraints for this
application are:
- Go to
the maximum cruise velocity in the least amount of time (given the maximum allowed
acceleration).
- Maintain this
cruise velocity with the minimum variation until the next change in velocity
profile.
- The XY
coordinates defines a cutting path, so distortions in position should be minimum.
I’m looking
for a set of equations that could generate data in the PVT format that meet
this requirements and it should be possible to put this in C++ program because adjusting
and testing in Motion Assistant application would not be possible. Could you help me in developing those equations?
The file “data_profile.xls”
is one real example and contains XY coordinates with the respective move
constraints.
Regards,
Attachments:
files.zip ‏141 KB

Position Profile & Organization Profile in MSS

Dear All,
I have included Position Profile and Organization Profile Iviews under General Information (Team Workset). However, when I open these Iviews, the page is blank (Position Description, Working Time, Compensation, Position Holders, Vacancy, Cost Distribution, Employee Group, Accounting, Requirements   Iviews). I am getting a message in these Iviews as "To display data, first select a position".
Am I missing any configuration. Please suggest.
Thanks!

can you check if the url of pcd is correctly maintained?
you need to adjust the URL of the
PCD Page with the prefix "EYROLES" (instead of "ROLES")
within the table view V_T7XSSSERRES for the following entries
in your R/3 backend:
- MSS_HCM_SERV_EEPROFILE_GENERALDATA
- MSS_HCM_SERV_POSITION_PROFILES
- MSS_HCM_SERV_PPRO_HOLDERS\
ie
1) Use Tcode:SM30 to open the View: "V_T7XSSSERRES" in change mode.
2) Open the resource Key "MSS_HCM_SERV_EEPROFILE_GENERALDATA"
for editing.
3) Please maintain the following parameters.
Resource Key: MSS_HCM_SERV_EEPROFILE_GENERALDATA
Description:     Employee Profile: General Data
Object Name:     GeneralDataApp
Window Name :         _blank
URL of the PCD Page:
EXROLES://portal_content/com.sap.pct/line_manager/com.sap.pct.erp.mss.bp
_folder/com.sap.pct.erp.mss.pages/com.sap.pct.erp.ms
s.hcm/com.sap.pct.erp.mss.general_data

How to maintain year of experience required for a position?

Hi All,
There is a very requirement for a position like "3 years of experience as Executive" I dont know how to maintain this requirement in SAP. Right now we have created a qualification named "Executive Experience" with a time scale assigned to it with a validity period of one year so HR dept must change the scale evey year. It works but it's not best practice. I know if there is a way we can use employee past and current work history to determine the level of experience and also how to define this requirement in position profile.

Hi Dilek,
I maintained all those thing. But i have to do the selection process on the basis of position with year of experience. While doing the selection process via Position or Qualification its picking up the exact applicant. I created a career as 3 years as you said so that the minimum year of experience for that position is 3 years. Then where i can give the year of experience for the applicant? Even though i maintained the previous employer details as 2 years the system is picking up the applicant. Logic wise how to do this?
Please help me to sort out this problem.
Thanks in advance,
Magesh S.

How to maintain experience requirement for a position

Hi All,
There is a very common requirement for a position like "5 years of experience in management level" I dont know how to maintain this requirement in SAP. right now we have created a qualification named "Management Experience" with a time scale assigned to it with a validity period of one year so HR dept must change the scale evey year. It works but it's not best practice. I know if there is a way we can use employee past and current work history to determine the level of experience and also how to define this requirement in position profile.
Thanks in advance,
Shahin

I guess it will be SU12 Transaction.
Thanks
Seshu

Motion Assistant - Generating Sinusoidal Velocity Profile

Hi,
I am currently working on a project where I need to create a sinusoidal velocity program for the pump that I am controlling. It is believed that the person previously working on the project used a LabVIEW VI to generate an XML file to control the pump's velocity. Do you have any idea what VI in the motion suite would be able to do this?
Alternatively, is there an easy way to create the sinusoidal velocity profile using an EXCEL spreadsheet? And would it be better to use a position profile or a position-velocity-time profile in Motion Assistant?
Thanks!

Hi UW-AC-1,
There is no VI in our Motion drivers that will allow you to do this. However, it sounds like the previous person may have generated an array and then used a Write to XML File.VI (this can be found under Programming->File I/O->XML->LabVIEW Schema).
From your post, it sounds like you may want to use a position-velocity-time profile in Motion Assistant. We have some examples of how to do this as well as a Discussion Forum here that discusses where these profiles are located. Hope this helps!
Mychal F
Applications Engineer
National Instruments

Motion Assistant - Generating Sinusoidal Velocity Profile Options

Hi,
I am currently working on a project where I need to create a sinusoidal velocity program for the pump that I am controlling. It is believed that the person previously working on the project used a LabVIEW VI to generate an XML file to control the pump's velocity. Do you have any idea what VI in the motion suite would be able to do this?
Alternatively, is there an easy way to create the sinusoidal velocity profile using an EXCEL spreadsheet? And would it be better to use a position profile or a position-velocity-time profile in Motion Assistant?
Thanks!

Hi UW-AC-1,
There is no VI in our Motion drivers that will allow you to do this. However, it sounds like the previous person may have generated an array and then used a Write to XML File.VI (this can be found under Programming->File I/O->XML->LabVIEW Schema).
From your post, it sounds like you may want to use a position-velocity-time profile in Motion Assistant. We have some examples of how to do this as well as a Discussion Forum here that discusses where these profiles are located. Hope this helps!
Mychal F
Applications Engineer
National Instruments

Custom lens profile not working

I decided to create a custome lens profile for my old Canon EF 17-35 2.8 L USM lens. I downloaded the Adobe Lens Profile creator and studied documentation. After figuring out it is time taking process I finally decided to shoot over 500 hundred images with the lens in RAW format with my 5D Mark III.
First I was a little too optimistic and imported all the photos to ALPC without separating them to distance groups. I shot 9 photo sets with apertures 2.8, 4, 5.6 and 8, focal lengths 17, 20, 24, 28 and 35 from 3 different distances. The ALPC created the profile ok (there were some skipped photos) and I can select that profile both in LR5.2 and PS CC. However nothing changes in the picture when I select that profile. I read the documentation again and decided to start again with just one set of 9 pictures (17mm, 8.0, one shooting position) profile gets created and is selectable in LR and PS, but it affects nothing. Even if the target photo (RAW) is shot with different focal length or aperture, shouldn't the approximation used then and some visual change to be seen?
What am I doing wrong?

Please send the profile and an example raw image (taken with this 17-35 lens) to me at [email protected] (dropbox, yousendit.com, etc.). It will help me determine what is going wrong.

RFC for Costcentre of Position

Hi,
for a given position (S) without a Person assigned, I want to find out the costcentre it belong to. Is there an RFC to achieve this?
regards,
Thibault

Hello Thibault
Function group HRWPC_POSITIONPROFILE (<i>Position Profiles</i>) probably contains all the required RFC functions.
To check if a position is assigned to a person (= holder) or not, you can call function module HRWPC_RFC_PP_HOLDERS.
If the TABLES-parameter HOLDER is initial then you can read the cost center using HRWPC_RFC_PP_COSTDISTRIBUTION (returns main cost center and cost center distribution = infotype 0018).
Final remark: The function group is available since ECC 5.0 but I guess similar functions are also availabe on release 6.20.
Regards
Uwe

Position profile

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