Using local variables with a case structure

I recently decided that I didn't want to nest a bunch of case structures for a program I am creating. I have two variables, N1 and N2, and I want to say execute Case 1 if the integer input to the terminal is less than N2. Case 2 if the integer input into the terminal is greater than N2 but less than N2+N1. Case 3, integer greater than N2 + N1, but less than N2+N1+N2. Case 4, you guessed it, Greater than N2+N1+N2, but less than N2+N1+N2+N1. When I try to type the variable name into the bar and use the ... like you do with integers it changes the variable name to a string.
Am I just thinking of this the wrong way? I have a sensor setup in a square and I am using a matrix card hooked up to the sensor bundle to send signals from each sensor to each other sensor, but not for those along the same sides.
Tom

I see the nested case structures which is what I didn't want to do, but I will have to because I am tired of looking at this. Thank you for the help on this. I appreciate it.
The sensor network is shown in the image included. Lets say we number the sensors in a clockwise direction starting on the lower left hand corner. Each element needs to both send and recieve data to all other elements except for the one in the row it is in. So sensor 1 would sent to sensor to sensors 5 - 18. Then sensor 2 would send to 5 - 18. Sensor 5 would sent to 1 - 4 and 10 - 18. Etc.
Lets say if this were a circular array it would be easy. Two nested while loops. And the only condition I need to worry about is that sensor N is not both sending and recieving at the same time. Each while loop, or for loop - doesn't matter, will start at 0 and go to N-1. Each i and j will have +1 added to them, and as long as they are not equal preform the data operation.
Just some fun logic to think about
Tom
Attachments:
rectangular.jpg ‏12 KB

Similar Messages

Problem using local variable in event loop

I have a state machine from which I want to monitor various controls, including "Start" and "Stop" buttons. Not every state needs to monitor the controls. At present, most states run timed loops. In the first state that reads the front panel, I have an Event structure (inside a While loop) that monitors the various controls' Change Value events. For numeric controls, I update variables (in shift registers) as needed. The "Start" button is used to end the While loop controlling the Event structure, allowing the State to exit to the next state.
My problem comes in subsequent states that employ this same idea. Here, I put a Local Variable bound to the Start button and use the same code, but it frequently happens that when I enter this particular state, I cannot "turn on" the control -- I push the button, but it stays off. Curiously, if it was On when I enter, I can turn it off, but then I'm stuck not being able to turn it on.
I mocked up a very simply routine that illustrates this. There are two sequences (corresponding to the two states). Both use an Event loop with a local variable bound to my Stop button (really this is an LED control with custom colors). I've deliberately moved the "initialization" (the declaration of the control in the block diagram) out of the Event loops -- putting it inside the first loop modifies the behavior in another strange way.
Here's my thinking on how I would expect this to work: The code outside Event Loop 1 should have little effect. Assume the Stop button is initially Off. You will "sit" in Event Loop 1 until you push the Stop button, changing its value to True; this value will be passed out of the Event case and cause the first While loop to exit. You now enter the second sequence. As I understand the Exit tunnel, it defaults to "False", so I'd expect to stay in the second Event loop until I turn the Stop button from On to Off, which will pass out a False, and keep me in the While for one more button push. However, this doesn't happen -- I immediately exit, as though the "True" value of the Stop local variable is being seen and recognized by the Event loop (even though it hasn't changed, at least not in the context of this second loop).
An even more curious thing occurs if I start this routine with the Stop button turned on. Now I start in my Event loop waiting for a change, but this time the change will be from On to Off, which won't cause an exit from the frame. This will be reflected by having the While loop count increment. We should now be in the state of the example above, i.e. in an Event loop waiting for the control to be pushed again, and turned On. However, clicking the control has no effect -- I cannot get it to "turn on".
Where am I going astray in my thinking? What is it about this method of doing things that violates the Labview paradigm? As far as I can tell, what I'm doing is "legal", and I don't see the flaw in my reasoning, above (of course not -- otherwise I'd have fixed it myself!). Note that because I'm using local variables inside Event loops (and I'm doing this because there are two places in my code where I want to do such testing), the Stop control is not latching (as required). Is there something that gets triggered/set when one reads a latched control? Do I need to do this "manually" using my local variable?
I'll try to attach the simple VI that illustrates this behavior.
Bob Schor
Attachments:
Simple Stop Conundrum.vi ‏14 KB

altenbach wrote:
Ravens Fan wrote:
NEVER have multiple event structures that share the same events.
Actually, that's OK. NOT OK is having multiple event structures in the same sequence structure.
See also: http://forums.ni.com/ni/board/message?board.id=170&message.id=278981#M278981
That's interesting. I had always thought I read more messages discouraging such a thing rather than saying it was okay. Your link lead me to another thread with this message. http://forums.ni.com/ni/board/message?board.id=170&message.id=245793#M245793. Now that thread was mainly concentrating on registered user events which would be a different, but related animal.
So if you have 2 event structures they each have their own event queue? So if you have a common event, one structure pulls it off its event queue and it does not affect the other structure's event queue? I guess the inherent problem with this particular VI was that the second event structure locked the front panel. Since the code never got to that 2nd event structure because the first loop never stopped because the change was from true to false. After reading your post and the others, I did some experimentation and turned off the Lock front panel on the 2nd structure, and that prevented the lockup of the program.
Overall, the example VI still shows problems with the architecture and I think your answer should put the original poster on the right track. I think as a rule I would probably never put the same event in multiple structures, I feel there are better ways to communicate the same event between different parts of a program, but I learned something by reading your reply and about how the event structures work in the background. Thanks.

Time Format using text variable with replacement path

Hi Friends,
I've used "Text variable with replacement path" to make the column heading dynamic by replacing the values referring from "0calday"...
everything is working fine, but here it is displaying the time format like
YYYYMMDD (20030101), i want it to be displayed DDMMYYYY (01012003) in the column heading... how to make it possible?
pls waiting for ur inputs, it's an urgent...
Regards,
Pattnaik

Hi Satyakam,
In the text variable properties make sure that in the replacment path you have chosen "Text" to appear date as per user setting . Other wise as in your case it must be set to "Key" which always shows in the format YYYYMMDD.
Hope that helps.
Regards
Mr Kapadia

How to use local variables to pass an image mask correctly

I'm kind of new to labview but i'll try to explain the problem as best as i can: I'm trying to pass an image mask (basically an image) to the next iteration of a while loop using local variables. I think the image passes through the loop with the local variable but i can't read from it correctly for some reason. And I don't think the problem has to do with local variables because i've tried using shift registers and that didnt work either. I think the problem is that you need to do something to read the image correctly again, like using IMAQ copy or something (that didnt work tho), but i can't figure out what the problem is. Does anyone know what the problem is? I know this isnt a great explanation and if its too confusing i could send some snapshots of the program or something. Any help would be greatly appreciated though.
Thanks,
Will

So i attached 2 snapshots of the program to give a better idea of the problem. The first snapshot shows an image getting written to the local variable SavedMask. The second snapshot, which is run on the next iteration of a while loop, shows the local variable SavedMask being read to other image operations. When i run the program, the SavedMask image is always displayed correctly on the front panel, but i can't read from it for whatever reason. I think the problem could be like you said, that im only passing an imaq reference, and i think theres a certain way to extract the image data. Do you know the correct way to extract the image data or how to pass the image data and not just a reference to the data.
Attachments:
first.jpg ‏81 KB
second.jpg ‏68 KB

Possible to use local variables in Calculation Manager

Hi,
I'm using calculation manager in EPMA for the first time. Have not found any function for using "local variables", i.e. variables that can be used for fixing on the current members a user has selected in a form. Do someone know if it is possible to use that functionality in calculation manager? And in that case, how do I find it?
Thanks!
Regards
Mats

Hi,
I guess you are referring to local variables in Essbase Administration Console. When you are in calculation manager (System View), you can go to Tools->Variables. There you can create variables at application, database (global) or business rule level (local variable). You can use these in Business rules by placing the name in curly bracket {...}.
The usage of the variables in the forms is the same as before.
If however, what you meant to say by local variables is substitution variables, yes you can use them in Calc manager the same way you use in calc script.
Cheers,
Alp

Using bind variable with IN clause

My application runs a limited number of straight up queries (no stored procs) using ODP.NET. For the most part, I'm able to use bind variables to help with query caching, etc... but I'm at a loss as to how to use bind variables with IN clauses. Basically, I'm looking for something like this:
int objectId = 123;
string[] listOfValues = { "a", "b", "c"};
OracleCommand command = new OracleCommand();
command.Connection = conn;
command.BindByName = true;
command.CommandText = @"select blah from mytable where objectId = :objectId and somevalue in (:listOfValues)";
command.Parameters.Add("objectId", objectId);
command.Parameters.Add("listOfValues", listOfValues);
I haven't had much luck yet using an array as a bind variable. Do I need to pass it in as a PL/SQL associative array? Cast the values to a TABLE?
Thanks,
Nick

Nevermind, found this
How to use OracleParameter whith the IN Operator of select statement
which contained this, which is a brilliant solution
http://oradim.blogspot.com/2007/12/dynamically-creating-variable-in-list.html

How to use shared variables with native c programs

Hello
What is the way to use shared variables with native c programs?
I have a c/c++ program that uses the NIDAQmx C-API to perform measurements. Now I want to communicate to a LabVIEW program via shared variables.
Is there a C-API for shared variables as there is for the NIDAQmx functionality? Where can I find further documentation? The document "Using the LabVIEW Shared Variable" mentions that one "can read and write to shared variables in ANSI C", but there are no hints about how and where to look.
Thanks in Advance

Hi user42,
with CVI 8.0, you cannot create or configure shared variables. However, you can read or write to an already configured LabVIEW 8.x shared variable from CVI using the DataSocket API.
In order to do this you need to have and DataSocket 4.3 or higher installed.
Here's a forum post about using the DataSocket functions a LabVIEW Shared Variables:
http://forums.ni.com/ni/board/message?board.id=180&message.id=24569&requireLogin=False
With CVI 8.1 and Measurement Studio 8.1 it's possible to use Shared Variables via the Network Varaiable Library (check out the end of the "Network-Published Shared Variable" section within the "Using the LabVIEW Shared Variable" documentation and the following link).
Datasocket with LabWindows/CVI and LabVIEW Real-Time:
http://digital.ni.com/public.nsf/allkb/CC4343488413A2F586256E6200099638?OpenDocument
Daniel
NIG

How to use bind variables with XMLTABLE?

I tried to use bind variables with xmltable statment. Here, my testcase:
create or replace function wsdltest return xmltype as
l_dummy xmltype;
l_stt clob;
l_name varchar2(500);
l_xml clob;
BEGIN
l_xml :=
'<definitions name="F1" targetNamespace="http://xmlns.oracle.com/orawsv/XFILES/F1" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:tns="http://xmlns.oracle.com/orawsv/XFILES/F1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">
<types>
<xsd:schema targetNamespace="http://xmlns.oracle.com/orawsv/XFILES/F1" elementFormDefault="qualified">
<xsd:element name="SVARCHAR2-F1Input">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="A-VARCHAR2-IN" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="F1Output">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="RETURN" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
</types>
<message name="F1InputMessage">
<part name="parameters" element="tns:SVARCHAR2-F1Input"/>
</message>
<message name="F1OutputMessage">
<part name="parameters" element="tns:F1Output"/>
</message>
<portType name="F1PortType">
<operation name="F1">
<input message="tns:F1InputMessage"/>
<output message="tns:F1OutputMessage"/>
</operation>
</portType>
<binding name="F1Binding" type="tns:F1PortType">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="F1">
<soap:operation soapAction="F1"/>
<input>
<soap:body parts="parameters" use="literal"/>
</input>
<output>
<soap:body parts="parameters" use="literal"/>
</output>
</operation>
</binding>
<service name="F1Service">
<documentation>Oracle Web Service</documentation>
<port name="F1Port" binding="tns:F1Binding">
<soap:address location="http://localhost:8080/orawsv/XFILES/F1"/>
</port>
</service>
</definitions>';
-- OK
l_stt := 'select * from xmltable(XMLNAMESPACES(''http://www.w3.org/2001/XMLSchema'' AS "XSD", default ''http://schemas.xmlsoap.org/wsdl/''),
''//definitions/types/XSD:schema/XSD:element[@name="SVARCHAR2-F1Input"]''
passing xmltype(:1)
columns
ab xmltype path ''.'' ) t';
EXECUTE IMMEDIATE l_stt INTO l_dummy using l_xml;
-- ERROR ORA-01006
l_name := '"SVARCHAR2-F1Input"';
l_stt := 'select * from xmltable(XMLNAMESPACES(''http://www.w3.org/2001/XMLSchema'' AS "XSD", default ''http://schemas.xmlsoap.org/wsdl/''),
''//definitions/types/XSD:schema/XSD:element[@name=:2]''
passing xmltype(:1)
columns
ab xmltype path ''.'' ) t';
EXECUTE IMMEDIATE l_stt INTO l_dummy using l_xml, l_name;
return l_dummy;
END;
Any idea ?
Thanks in advance
Cyryl

Why are you using dynamic SQL statements? Why not just use something like this instead in your PL/SQL. I also replaced the leading // in your Xpath with just / since you start from the root node.
select *
INTO l_dummy
from xmltable(XMLNAMESPACES('http://www.w3.org/2001/XMLSchema' AS "XSD", default 'http://schemas.xmlsoap.org/wsdl/'),
                '/definitions/types/XSD:schema/XSD:element'
                passing xmltype(l_xml)
                columns
                ab xmltype path '.' ) t;Also, the above returns two rows, which I suspect is not what you want. Here is the pure SQL version for you to debug.
select *
from xmltable(XMLNAMESPACES('http://www.w3.org/2001/XMLSchema' AS "XSD", default 'http://schemas.xmlsoap.org/wsdl/'),
               '/definitions/types/XSD:schema/XSD:element'
               passing xmltype('<definitions name="F1" targetNamespace="http://xmlns.oracle.com/orawsv/XFILES/F1" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:tns="http://xmlns.oracle.com/orawsv/XFILES/F1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">
<types>
<xsd:schema targetNamespace="http://xmlns.oracle.com/orawsv/XFILES/F1" elementFormDefault="qualified">
<xsd:element name="SVARCHAR2-F1Input">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="A-VARCHAR2-IN" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="F1Output">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="RETURN" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
</types>
<message name="F1InputMessage">
<part name="parameters" element="tns:SVARCHAR2-F1Input"/>
</message>
<message name="F1OutputMessage">
<part name="parameters" element="tns:F1Output"/>
</message>
<portType name="F1PortType">
<operation name="F1">
<input message="tns:F1InputMessage"/>
<output message="tns:F1OutputMessage"/>
</operation>
</portType>
<binding name="F1Binding" type="tns:F1PortType">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="F1">
<soap:operation soapAction="F1"/>
<input>
<soap:body parts="parameters" use="literal"/>
</input>
<output>
<soap:body parts="parameters" use="literal"/>
</output>
</operation>
</binding>
<service name="F1Service">
<documentation>Oracle Web Service</documentation>
<port name="F1Port" binding="tns:F1Binding">
<soap:address location="http://localhost:8080/orawsv/XFILES/F1"/>
</port>
</service>
</definitions>'
               columns
               ab xmltype path '.' ) t

How can I use Local SPAN with RSPAN ??

How can I use Local SPAN with RSPAN ??
I want to mirror traffics from ISP-A and ISP-B to Anomaly-detector module.
so I had configured like this...
C6500-A
vlan 1000
name RSPAN
remote-span
monitor session 10 source interface Gi5/1 - 2 rx
monitor session 10 destination remote vlan 1000
monitor session 20 destination anomaly-detector-module 3 data-port 1
monitor session 20 source remote vlan 1000
interface GigabitEthernet1/13
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1000
switchport mode trunk
no ip address
C6500-B
vlan 1000
name RSPAN
remote-span
monitor session 10 source interface Gi5/1 - 2 rx
monitor session 10 destination remote vlan 1000
interface GigabitEthernet1/13
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1000
switchport mode trunk
no ip address
end
but it was not working..
it wasn't any change of input packet hit count when
I'd enter a command 'show anomaly-detector module 3 data-port 1 traffic'
was upper configuration wrong..?
Can I use VACL configuration ?

try to change "monitor session 10 destination remote vlan 1000 " to "monitor session 10 destination anomaly-detector-module 3 data-port 1 " on C6500-A

Data Acquisition - using local variables to write data to a file

Hello,
I am running a Data Acquisition vi (currently in LabVIEW 7.1 but soon to be updated to 8.2) that collects ~100 parameters of data from several sources contained in a while loop. The current configuration (which I did not write) uses very few subVIs and writes to ~100 local variables to store each parameter. It then reads all the local variables and builds an array of all the strings, converts then to a spreadsheet string, then uses the write characters to file function to append to a datafile. I am trying to clean things up and have came up with subVIs to collect the data from the following sources:
8 serial port sources collecting btwn 8 and 20 parameters each
~15 thermocouple readings
~10 analog inputs
~20 parameters read off an ARINC 429 bus.
I have come up with a subVI to read each of the sources and have placed the subVIs in the while loop. Each subVI outputs the data that it collects in array or cluster form. I was wondering how best to write each parameter to a CSV file at between 1 and 10 Hz. Should I write each subVI output to a LV and then read them off as was done before (the difference being that I have reduced the # of LVs to ~10 vs >100?
I should add that precise timing is not that important, so if all the subVIs are not collecting simultaneously (which I understand that they won't be), it does not really matter.
Thanks.

Hi jilla,
jilla wrote:
What I think that you are saying is to turn the outputs of the 4 subVIs into inputs of a 5th subVI that writes to the data file. Correct?
Yes. It may sound like a fine-point, but I beileve it's better to create a VI specifically for formatting data - in your example, 4 arrays IN, a single string OUT. Then write the string to file as a seperate operation. GUI-displayed data can go through a similar transformation, the four arrays wired to a subVI which builds output-structures specifically for display. It's a beginner's mistake to put lots of individual controls and indicators on the screen when groups of them are naturally related (in an object-oriented sense.) Use clusters to group related controls - this will keep the diagram much cleaner.
One more question: at what point (either # of data points or frequency of data collection) does it become necessary to use queues? Thanks.
Well, there's not really a clearly definable "point". I'd say if your update-rate climbs above 100Hz, or you witness poor program or system performance, then it's time. The scenario you've described is a fairly simple acquire/display&log loop - and simple is good. Then-again people can't see/react-to updates faster than about 10Hz - so it doesn't make sense to sacrifice performance - if performance becomes an issue.
Re: queues: Queues are sometimes used to buffer data that's "produced" in one place and "consumed" in another.
Here, if/when logging data, you're logging with every DAQ. I wouldn't recommend using a queue to transport data from a "DAQ loop" to a "Logging-loop" - those functions can be in the same loop. Should/could a queue be used to get data from a "DAQ loop" to update the GUI at a lower frequency? Sure, but a Notifier might be a better choice. Further, in the (simple?) program you've described, you might use a case structure (True/False) to only update FP indicators every "X" iterations - a simple solution that doesn't require Queues or Notifiers.
Cheers!
"Inside every large program is a small program struggling to get out." (attributed to Tony Hoare)

How to use local variable in member formula?

Hi Expert,
We would like to use a {local variable} in a member formula, so that it can pick up the prompt from webform upon save. Would like to know if it is possible to do? If so, what is the correct syntax?
We attempted to use brace {scenario}, blacket [scenario], blacket with quote ["scenario"]. None of these work.
We are using 11.1.2.1 version, EPMA, Hyperion Planning.
Thanks in advance for your help!

One other pointer. Where did you define your variable? Hopefully you went into Calc Manager and selected <Tools>, <Variables>. From there, navigate to your application or database. Right-click on your application or database and select "New". In the bottom panel, you'll need to select your Variable Type. Make sure you select "Member", and not "Members". You cannot pass "Members" (plural) to a web input form. Also, if you want to define a variable for a custom dimension, you'll need to do it at the database level. Standard dimension member variables can be defined at the app level. (Not sure why this is the case, especially when my custom dimension exists in all plan types . . . . )
Anyway, hope this helps,
- Jake

How to increase the performance with the case structure?

Hiii, All
I want to stop the looping into my vi, which is occuring because of Case structure, as i ve shown in the figure, i am checking for the trigger, either it is Manual or it is Auto, if auto i am going inside the case and checking the loop of either Auto trigger is for Analog values or for digital values, if it is for analog valus, i am checking the set point that, either P.V. has cross the setpoint or not? if it is then i am starting to write the file and the control comes out again to check the Start trigger again, either it is Auto or manual? and because of these contonuous loops inside the while loop, my other while loops inside the vi, decrease the performance mean they are slowing down also with the current while loop, so i think solution is to stopping these nested loops, but what should i do to stop these nested loops? please suggest something.
Thanks in Advance,
Nishant
Attachments:
Performance.jpg ‏169 KB

You can consider multithreading the single loop and using a synchronization resource to communicate between threads. You should also consider cutting down on the global variable dependancies which makes the code hard to follow.
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA

How to solve error using local variables?

I've created a sequence with a local variable.
But when I execute it, an error occurs since the first step (before the step where I manipulate the local variable).
The error code is something like:
Error in Evaluation. Syntax expression. Column [0-0]
It's interesting because it seems that once I've executed my sequence for the first time I can't create any other sequence where this error doesn't appear.

Pparo,
The problem does not occur under TS 1.0.3 on my system. However, I think we can get to the bottom of this.
When at a breakpoint in your sequence, if I type the expression "Locals.nls == 15-" in the TestStand watch window, I will get the message
Evaluation Failed: Syntax error in expression (Column 18-18)
I believe that this is the same type of error that you have encountered. Correct me if I am wrong.
The numbers after the word "Column" indicate where the error has occurred in the expression. In your case the error occurs at the beginning of an expression. The question still remains as to in which expression is error occurring.
Are you seeing this error reported in the watch window? If so, then you have typed the expression in the watch window.
If I copy the bad expression above into a the expression of a Statement step I get a run-time error of
An error occurred in the 'Statement' step of the 'MainSequence' sequence in 'Sequence File1'.
The post-expression for the step 'Statement' could not be evaluated.
Syntax error in expression.
Error Code: -17322
From what you report, the error appears to be located in your watch expression. When I executed your sequence with a breakpoint on the first step, I added the watch expression by selected the Context tab, expanding the Sequence Context tree view until I could see the nls variable, and then I dragged nls from the tree view to the watch window. This created the watch expression of Locals.nls. I also created the same watch expression by right clicking in the watch window, selecting Add Watch from the context menu, and selecting (or typing) Locals.nls. The expressions all evaluated to 24 without error.
This process has NOTHING to do with creating local variables. You asked if you are creating variables properly. There are only 2 ways to create variables in TestStand 1.0.3, neither of which you have described. The most common method is to select the Locals tab after opening your sequence (not during execution), right click in the right pane and add the variable of your choice. It seems like you did this correctly based on the sequence file you sent. The other method of creating variables is to do so programmatically. However, this is beyond the scope of this answer.
You ask a question about "the best way to create three constants in LabVIEW and pass them to a LabVIEW VI that is a step?" This implies to me that you want to create the strings within a VI called by one sequence step, and then use them in another VI called by a different sequence step. I would recommend taking a look at the example AccessingPropertiesAndVariables.seq that ships with TestStand. The first 3 VIs write values back to step properties, but could just as easily write them back to local variables. The 4th VI writes a file reference back to a TS local variable. The 5th and 6th step get the file reference from the TS local variable. You want to do something similar to the 4th and 5th VI, however, you want to send 3 strings to local TS variables, and then get them in the following VI. This will require using "TestStand - Set Property Value (String).vi" and "TestStand - Get Property Value (String).vi" which can be found in the TestStand function palette in LabVIEW. After reviewing this example you can then ask additional question. I recommend posting the question on a different thread since it is unrelated to your original question about the syntax error.

Using a variable with "tell application"

I'd like to use a variable (app_name) with "tell application" in the following function:
on getAdobeDoc(app_name)
tell application app_name
tell current document
return (name as Unicode text)
end tell
end tell
end getAdobeDoc
but I'm getting the following error in Script Editor
"Expected end of line but found class name." with the word "document" highlighted.
Are you allowed to use variables in "tell application"? All Adobe CS apps seem to use the same format to get the document name so I'd like to use one function to get them.

If the application might have a different name on the target machine (for example, if it has a version number added), you can use an application's bundle identifier (or creator code) to set the variable, in which case the using terms from statement tells AppleScript the application (on your machine) to get the dictionary terms from. If the application you are using terms from has a dictionary identical to your variable, everything should work the same. The following example uses a variable (called, appropriately enough, TexttEdit) for the TextEdit application:
<pre style="
font-family: Monaco, 'Courier New', Courier, monospace;
font-size: 10px;
margin: 0px;
padding: 5px;
border: 1px solid #000000;
width: 720px;
color: #000000;
background-color: #FFDDFF;
overflow: auto;"
title="this text can be pasted into the Script Editor">
tell application "Finder" to set TextEdit to the name of application file id "com.apple.TextEdit"
tell application TextEdit
using terms from application "TextEdit"
launch
make new document with properties {text:"This is a test"}
end using terms from
end tell
</pre>

Problem with a case structure

I have the following problem:
I want that the structure from the TRUE case of the bigger case structure to start only when I switch from the button and activate the TRUE position. I observed with the probe tool that the structure is still executed in backgroun even if the bigger case is on FALSE. I want to make it start from the first position (the default case) of the inner case structure whenever I will switch from the button. I hope I made myself cleared. Thanks
Solved!
Go to Solution.
Attachments:
Untitled 3.vi ‏77 KB

Hi maryus,
your observation (or better assumption) is wrong.
As long as you set your button to FALSE the inner case structure in the TRUE case is not executed!
But: when you switch to TRUE case you wired the loop iterator to the inner case selector. So the inner case structure is not starting with it's first case but with the case corresponding to loop iteration count!
You can see all this by using execution highlighting!
Btw. when you have several cases in a case structure you can combine them to one case. It's all explained in the context help of the case structure! So you can combine cases (1, 3,4,6) and (2,5,7) into just one case each…
Edit: Damn, Christian was faster (with same conclusions)…
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Using local variables with a case structure

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