Channel values read

Hi everyone,
I have a very trivial problem.In a SUD dialog I load and display some channels in a channel-combo-box.So everythings perfect so far,but I have some texts channels and I have text entries which lenght may vary, but I cannot figure it out how to display the text channel values in a combo-box, after the corresponding text channel is selected.It can be very simple if there is a command which is sthg like 'read channel values'. I had an idea , which is more time consuming, I can create a dinamic array and use a enumeration-combo-box but I'm in kind of a hurry.So if you have an idea about it I'll be most grateful.
Thanks in advance
Solved!
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Hello!
AFAIK is there no build in function in DIAdem. You have to do it yourself.
Matthias
Matthias Alleweldt
Project Engineer / Projektingenieur
Twigeater?

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DAQmx Channels To Read Property Not Working

I have an AI task configured with multiple channels and then set the Channels To Read property to the channel I want before calling the Read VI. If the Channels To Read property value that I set matches the value that was previously set the task passes all the channels to the Read VI rather than the single channel of the property. Does anyone have insight into what might be the problem?

Hi, I'm using Labview 8.2 and DAQmx 8.8. I have attached screenshots of the code.
Attachments:
Post1.PNG ‏40 KB
Post2.PNG ‏27 KB

The value read by visa read VI is not correct!

I design a labview program to control Agilent E5072C network analyzer. When I want to get value from this instrument, I use the "VISA read" VI which listed in the block plate. However, the value read by this VI is last time measurement value. For example, last time the read value is 1.0 db and this time the measurement value is 1.2 db. But when I use "VISA read" VI to fetch the value, it is 1.0 db.
Agilent also provide a VI for this device to read measurement value, and it alway read correct value. so could someone tell me why? do I need do any action before read value from this instrument if I want to use "VISA read" VI instead of Agilent VI?
Solved!
Go to Solution.
Attachments:
Read.vi ‏23 KB

You are probably reading it too quickly. By reading it in NI-MAX, you are doing it by hand, so it takes longer. When you do it programmatically, it is "instant". Try using the *OPC? command to turn your command into a query. It will then return a "1" in the read buffer. Read the "1" and then do the fetch command.
To Dennis:
I've had bad experiences with manufacturer-supplied drivers to the point where I don't even try to use them any more. But if Agilent is as anal about their drivers as they are about their manuals, they should be no problem.
Bill
(Mid-Level minion.)
My support system ensures that I don't look totally incompetent.
Proud to say that I've progressed beyond knowing just enough to be dangerous. I now know enough to know that I have no clue about anything at all.

How to display the max channel value on the report automatially?

Hi all,
I have 2 text boxes start and target ready on my report. I need one of my channel minimum value and the other channels max value to dispaly automatically in start and target box respectively.
How do i go about it?
Rsh
Solved!
Go to Solution.

Hello Jason,
There is an easy way to do this, and there is a more involved way to do this. I am hoping the "easy" way will solve your question, so I don't have to think about the solution that involves a little more effort:
Starting with DIAdem 2010 there is a way to add properties to the legend (see image below) of any axis system. What I did for this example was to simply add the legend for the 2D graph (that's a simple check box in the "Curve and Axis definition" dialog, and then dragged the maximum value of any channel onto the legend. It will automatically add a new column to the legend table and display the maximum (or any other channel property) in the legend. This of course works separately for each axis system on a page.
Starting with DIAdem 2011 there is a new "Curve Snippet" function that allows to create tables such as the one shown in the image below. Please have a look at the DIAdem 2011 example called "2D Tables as Legend and Legend for Axis System Labeling" to see how this was done, it's a little more effort, but it also adds extra flexibility:
Do either of these look like a workable solution for you?
Best regards,
Otmar
Otmar D. Foehner
Business Development Manager
DIAdem and Test Data Management
National Instruments
Austin, TX - USA
"For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."

Communiocation channel: Value with name asmaBaseFileName not available

Hi friends,
After upgrade our Dev system to PI 7.1. Whne i try to start the communication channels from Communication channel monitoring.
I am getting error for all the channels as follows :
Configuration error: Value with name asmaBaseFileName not available (Software version: 3.0.15)
Kindly guide me how to rectify this issue.
Renu

After upgrade our Dev system to PI 7.1. Whne i try to start the communication channels from Communication channel
monitoring.
Which metadata are the channels using...SAP PI7.0 or SAP PI7.1? If you dont import the metadata of SAP PI7.0 in the PI7.1 system then you may get an error for the communication channels....you should either change the channels to point to PI7.1 or import the metadata in ESR.
@Kiran: The tpz reference you have given seem to be of SAP PI7.11 .... will it also work for SAP PI7.1
Regards,
Abhishek.

Channel Value Issue Between Photoshop 6 and CS3

We use a specialized process that includes Channel operations to make separations for printing. When we use the same process that we have always used in any NEW photoshop, the value are completely different. This is best illustrated by opening a PS5 file and looking at the channels. we open the file in CS3 and look at the darkest value. we then they to fill an area of that same color in that channel and it is lighter, BUT CS3 says that it is the SAME value. we are blown away and cannot figure out what we are doing. We have tried color settings, everything. My boss even contacted Adobe tech support, had them recreate the problem and they say that they had no idea why it works like it does. I know that this is a long rambling post but if anyone has the slightest inkling of how to help i will accept any and all offers!
Thanks.

I am fairly certain that the way that Dot Gain was calculated or applied was also changed at some stage in the evolution of Photoshop?
It seems that it did! I have just found this (it dates from a piece I posted in 1998!):
Incidently, the Dot Gain algorithm has been changed in Photoshop 5.0.
Dan Margulis has discovered the formula for translating these values and I am repeating it here in case people missed that posting.
Starting with your known Photoshop 4 Dot Gain,
Subtract that dot gain from 40
Multiply the result by .33
Add 3 to that number
Subtract that number of points from your dot gain to get your PS 5 equivalent.
That would make a PS 4 Dot Gain value of 29% work out as:
40 - 29 = 11.
11 x 0.33 = 3.63
3.63 + 3 = 6.63
29 - 6.63 = 22.37 Dot Gain in PS 5
Hope that helps.

Triggered, Multiple channel Analog Read: TIMEOUT

Hello,
I am trying to read multiple AI channels (differential), triggered with a DigitalStartLine. To trigger, I generate a Hi-Low pulse on the trigger line. My readanalogF64 function always returns a Timeout.
I have used the same trigger to write multiple AO channels and have succeeded but not with the read operations. I have also found that if I don't use a triggered read, I am able to do the read perfectly.
Following is the piece of code:
DAQmxErrChk (DAQmxCreateTask("",&ADC_taskHandle));
DAQmxErrChk (DAQmxCreateAIVoltageChan (ADC_taskHandle, "Dev1/ai0:7", "", DAQmx_Val_Diff, 0, 10, DAQmx_Val_Volts, NULL));
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DAQmxErrChk (DAQmxCfgDigEdgeStartTrig (ADC_taskHandle, "/Dev1/PFI1", DAQmx_Val_Falling));
DAQmxErrChk (DAQmxStartTask (ADC_taskHandle));
DAQmxErrChk (DAQmxReadAnalogF64 (ADC_taskHandle, 1000, 10, DAQmx_Val_GroupByChannel,ADC_Data, 8000, &read, NULL));
DAQmxErrChk (DAQmxStopTask (ADC_taskHandle));
// To generate the Trigger pulse
for(i=1;i>=0;i--)
if(i==1)
singleBit_array[0]=1.0;
else
singleBit_array[0]=0.0;
DAQmxErrChk (DAQmxCreateTask ("", &taskHandle));
DAQmxErrChk (DAQmxCreateDOChan (taskHandle, "/Dev1/PFI0", "", DAQmx_Val_ChanPerLine));
DAQmxErrChk (DAQmxStartTask (taskHandle));
DAQmxErrChk (DAQmxWriteDigitalLines(taskHandle,1,0,10.0,DAQmx_Val_GroupByChannel,singleBit_array,NULL,NULL));
DAQmxErrChk (DAQmxStopTask (taskHandle));
The ERROR I receive is:
Function DAQmxReadAnalogF64: (return value == -200284 (0xfffcf1a4))
Some or all of the samples requested have not yet been acquired.
Property: DAQmx_Read_RelativeTo
Corresponding Value: DAQmx_Val_CurrReadPos
Property: DAQmx_Read_Offset
Corresponding Value: 0
Any suggestions would be a great help.
regards,
Dwivedi

Dwivedi,
Sorry it's taken me a while to get back to you, I've had a pretty hectic day here. However I was able to sit down this afternoon and write a C program which accopmlishes what you were trying to do with AO. I have NI-DAQmx 7.4 installed and was testing using a PCI-6259. My program was able to run without error. Here is my code:
TaskHandle aoTask;
int32 err = 0;
float64 dataArray[8192];
int32 sampsWritten = 0;
for(int i=0; i<8192;i++)
if((i%200) < 100)
dataArray[i] = 6;
else
dataArray[i] = -6;
err = DAQmxCreateTask("TestAOTask", &aoTask);
if(err != 0)
printf("Error Creating task... Error Code %d\n", err);
return 0;
err = DAQmxCreateAOVoltageChan(aoTask, "Dev1/ao0", "aoChan", -10.0, 10.0, DAQmx_Val_Volts, "");
if(err != 0)
printf("Error Creating channel... Error Code: %d\n", err);
return 0;
err = DAQmxCfgSampClkTiming(aoTask, "", 50000.0, DAQmx_Val_Falling, DAQmx_Val_ContSamps, 8192);
if(err != 0)
printf("Error configuring sample clock... Error code: %d\n", err);
return 0;
err = DAQmxCfgDigEdgeStartTrig (aoTask, "/Dev1/PFI0",DAQmx_Val_Falling);
err = DAQmxWriteAnalogF64(aoTask, 8192, false, 10.0, DAQmx_Val_GroupByChannel, dataArray, &sampsWritten, NULL);
if(err != 0)
printf("Error durring write... Error Code: %d\n", err);
return 0;
err = DAQmxStartTask(aoTask);
err = DAQmxStopTask(aoTask);
err = DAQmxClearTask(aoTask);
return 0;
Sorry, the text editor for this forum seems to insert an extra newline for every time I hit enter. About the only difference I found between your code an mine is that I wrote the data before starting the task (which is what I would recommend for AO. This will ensure that there is data available for the DAC's once the task is started). If you re-order your code in this way do you see a change of behavior?
Sorry again it took me this long. Please let me know how this works.
Dan

AI-100 Channel always reading 24ma

I have a strange situation where I have a cfp-2110 with a number of cards, all of which have been running fine for 9mo. Recently, I had a situation where the DO-410 card turned channels 5&6 on for roughly 21hrs (until noticed) - I doubt my labview 8.2 code had anything to do with it. Around 14hrs into this strange situation, my AI-100 card had a channel input go to 24ma and stayed at this value with no wires connected to channel. After much troubleshooting, everything came back to life and is working fine except for the one analog channel. Any ideas?

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Dependent Values read only or all possible values

Hello
I have read the following instructions.
[How to Configure Predefined Properties with Dependent Values (NW7.0)]|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/30b1ec90-0201-0010-6192-d3de721f8ae4?quicklink=index&overridelayout=true]
I need this scenario in the Portal search.
So my question is:
Is it possible, if Country is empty, that the field City is read only.
In the How to guide you can see , if no city is selected the property city is a text field(not Dropdown) and you can enter a sting.
Or it is possible, if no country is selected that the field city shows all possible cities, not restricted by countries.
For example no country is selected and the field city shows all cities.
or no country is selected and the field city is read only.
The html code of dropdown list country is
<option value="<empty>"><option value="Germany">Germany<option value="France">France
Value of no selection
<empty&gt = <empty>
If no country is selected the selected value is <empty&gt or <empty>.
I tried this:
"dependon=Country,*=allcities,Germany=GermanyCity,France=FrenchCity" and so on.
"dependon=Country,<empty>=allcities,Germany=GermanyCity,France=FrenchCity" and so on.
"dependon=Country,<empty&gt=allcities,Germany=GermanyCity,France=FrenchCity" and so on.
without success
Can some one help?
Edited by: Dirk Wiegele on Jan 23, 2011 12:21 PM
Edited by: Dirk Wiegele on Jan 23, 2011 12:22 PM

Hi
Yes, it is possible to generate an excel file in SAP. You can use any of the following FM's for the same:
1. EXCEL_OLE_STANDARD_DAT
2. GUI_DOWNLOAD
3. XXL_FULL_API
Hope it will help.
Regards,
Nikita

Setting default value read from user session, for an LOV in Query component

I want to set the default value of a field in VO that participates in a named view criteria and thereby in Query component. That field is configured with an LOV by mean of a view accessor. The values are Y and N and the corresponding display strings obtained from view accessor are true and false respectively.
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I made up your table since you didn't provide some example, but I'm sure this will give you the picture:
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PL/SQL procedure successfully completed.
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3                            from   dual connect by level <= 5;
Table created.
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2 from   my_cycles
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CYCLE_ID
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How do you populate a page item in apex with a value read from excel

Dear All
I am working on application where I am uploading a csv file in oracle apex. I then need to access a value in Cell B2 of the csv file and populate a page item called
:P2100_AUTHORISATION_ID with this value. Many of the examples I have found upload the data using v_data-array into a table but I don't need to do that I just need to get the value from the csv file and then display additional information about the file allowing the user to either or continue or cancel the request to upload. I am running into a small problem that I can't explain and wondered if anyone had any ideas.
Here is the code I am using to try and populate and item called :P2100_AUTHORISATION_ID but when I poulate the item the value is always 0. But if I replace the line :P2100_AUTHORISATION_ID:= v_data_array(2) with a raise_application_error(-20001,v_data_array(2)); The correct value is displayed in the eror. Any Help would be appreciate and I apologise in advance if this akes no sense at all:-)
declare
--variables needed to read excel data from flow files
v_blob_data BLOB;
v_blob_len NUMBER;
v_position NUMBER;
v_raw_chunk RAW(10000);
v_char CHAR(1);
c_chunk_len number := 1;
v_line VARCHAR2 (32767) := NULL;
v_data_array wwv_flow_global.vc_arr2;
v_rows number;
v_sr_no number := 1;
begin
--------------------------------------get file info from www_flow_files
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END LOOP;
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Best Regards
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Hi Joel
Continuing on from my last question, there was something else I want to ask if you dont mind.
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Would you know how to convert a v_data_array value to a number? At the moment I am attemting to do it withiin the same code I attached in my earlier post but I have replaced the assignment of :P2100_AUTHORISATION_ID with the code below where P_BL_WD_DATA_ENTRY.getauthid is the procedure returning the values I need.
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Thanks
Lynn

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Hello Sangita,
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Kind regards,
Roald Hoolwerf
Edited by: Roald Hoolwerf on Feb 1, 2010 3:57 PM

Try this.
Unchecked the configure use authentication.
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Best regards
Joachim

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        CONDENSE v_fld NO-GAPS.
        FIELD-SYMBOLS <fs> TYPE ANY.
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        v_fld1 = <fs> * <wa_pipe>-zrate.
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How to assign it to the internal table field.
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Ashok

*& Report YY_TEST1
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wa_fldcat type lvc_s_fcat.
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Channel values read

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