How to read 2 analog inputs with VISA

Hello everyone! I want to read two analog inputs using VISA serial communication from the arduino. I'm currently able to read one of the input but how do I read two analog inputs on labview?

Hi lamela,
again I have to ask: HOW does the string look like? Is it so hard to provide an exact example of your received string???
I think the string is showing one value from the two inputs
Are you sure or are you guessing? How can we tell what you might "think" when you aren't able to provide examples?
You wrote you send values from the Arduino using the command "println(value1, value2)", but now you "think" you only receive ""value1" in LabVIEW?
Get your data communications clear! (And learn to provide meaningful examples!)
Edit after your edit:
my code to serial print two inputs: Serial.println(Voltage, Current);
Even if I print separately: Serial.println(Voltage);
Serial.println(Current);
The first command is completely different then the second part! In the first you should receive two values in one line, in the 2nd one you receive one value per line: You need to adapt your string parsing to these strings!
Again: send both values in one line. Use the LF as termchar. Separate the values by some separator char like comma. Check the received string for validity. Use some error checking in your VI.

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How to read the 'Input help with fixed values' of domain .

How to read the 'Input help with fixed values' of domain .
The domain has a Value range i want to read those values .
Are these values stored in any table ?
Plz help me i need it ver badly...
Thanks in Advance...

Hi Chandra Shekhar,
To read the 'Input help with fixed values' of domain , you can use the function module : HR_P_GET_FIXED_VALUE_TEXT.
iIf you enter the domain name, you will find the fixed values entered in the domain.
These values are stored in a table DD07L(DD zero 7 L). Here the values are stored based on domain name.
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Award points if its helpful.
Regards,
Bhanu

Reading analog input

Good day all,
I'm using NI-7350, LAbview 8.5 and trying to measure voltage from a power source.
Is there any VIs that read analog inputs. I can't seem to open the examples.
Thanks
Solved!
Go to Solution.

Have you looked at the DAQmx? Create a virtual channel, start the task and read the value.
http://zone.ni.com/devzone/cda/tut/p/id/5370

How to read analogue input signal in NI 9201 module using lab view

hi all
iam using Crio 9012 module for real time controller
nd iam using NI-9201 for input and NI9263 for output
i have configures cRIO 9012 on my Pc
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tc
Solved!
Go to Solution.

Hello,
I would recommend taking a look at the following examples in the LabVIEW Example Finder. If you go to help-->Find Examples, you will see this window. Just search for 9201 and you'll see these 2 examples:
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Tejinder Gill
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Failure to read analog inputs

I have a USB6008 with amplified thermocouple signals coming in to the first 4 analog input ports. I have installed DAQmx3.1 on my mac and am trying to use the nidatalogger to read any values from them. Unfortunately I can not seem to read any of the analog ports. In nidatalogger i am given the choice of physical ports 1-7 all of which do not react to analog inputs on the board. They do however react when I apply voltages to some of the digital input pins, most noticable port 30. I am completely confused and since things like MAX dont exsist for the mac, I have no clue how to go about figuring out what is wrong. Help!

Thanks for posting on the NI Forums! I understand you are having trouble reading data from your analog inputs on the USB-6008. I am confused as to what terminals you are using. You mentioned that you are using the first 4 analog input ports.
- Does this mean you are connecting wires into terminals 2, 5, 8 and 11?
- How many thermocouples are you using?
- Is your input configuration single ended or differential?
Please refer to page 13 of the NI USB 6008 User Guide and Specifications, and clarify which terminals you are physically wiring to. You had also mentioned port 30, however if you look on page 14 you can see that terminal 30 corresponds to the +2.5 V pin.
General DAQ Troubleshooting and FAQ under Mac OS
Rod T.

How to synchronize analog input and output from two different USB daq boards

Hi all,
I have two very differnt USB boards the NI USB 6008, which I am using to acquire the data (Analog Input) and a NI USB 9263, it is an Analog Output only board that I am using to deliver a signal (in this case a square pulse). The reason why I am not using the 6008 Analog Ouputs is because I need to deliver negative voltages and need the full +/-10V range.
Looking at similar posts I am pretty sure that I can't use an external trigger or a shared clock, I also tried to use the synchronization of timed structures but no cigar.
I am including a quick vi that I whipped out showing how the signal jitters due to the lack of synchronization. The AO from the 9263 connects to the AI in the 6008 in this example.
Solved!
Go to Solution.
Attachments:
Test Pulse.vi ‏117 KB

I talked to a specialist in the phone and tols me that it is not possible.

How to read the input FORMAT of a Checkbox in list.

hi,
suppose i have,
WRITE CHK1 AS CHECKBOX INPUT OFF.
Now i have, grayed check box,
Problem. how to read from program, whether the checkbox is input off or on.
pls reply

Hi,
Check this example of how to use the Checkbox in a list..
REPORT ztest NO STANDARD PAGE HEADING.
DATA: BEGIN OF itab OCCURS 0,
 check,
 value(20),
 END OF itab.
SET PF-STATUS 'TEST1'.
itab-value = 'ETSAT'.
APPEND itab.
itab-value = 'ETSATADSF'.
APPEND itab.
itab-value = 'ETSAT'.
APPEND itab.
LOOP AT itab.
WRITE: / itab-check AS CHECKBOX,
 itab-value.
ENDLOOP.
AT USER-COMMAND.
DATA: wa LIKE itab.
DATA: itab_download LIKE itab OCCURS 0 WITH HEADER LINE.
IF sy-ucomm = 'DOWNLOAD'.
 DESCRIBE TABLE itab.
 DO sy-tfill TIMES.
 READ LINE sy-index FIELD VALUE itab-check.
 IF sy-subrc <> 0.
 EXIT.
 ENDIF.
 CHECK itab-check = 'X'.
 itab_download-value = itab-value.
 APPEND itab_download.
 ENDDO.
 download
 call function 'WS_DOWNLOAD'
 exporting
 filename = 'C:\TEST.XLS '
 tables
 data_tab = itab_download.
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Thanks,
Naren

Getting an error 33162 when trying to read analog input on FP

I am getting a error when trying to do a simple analog input read using Field Point. I have a FP-2000 network module and am trying to read channel 0 at FP-TB-10 @3 which has an AI-C420 analog input module in place. There is no definition for the error and I can read the signal from Field Point Explorer just fine.
I have downloaded the example continuous read vi from the web site and it does not work either. It seems that this should not be complicated but this is not the 1st problem I have had. I will take any suggestions. Thank you.

Mike,
Error code 33162, "Can not connect to item on module," generally is the result of attempting to connect to an item that is not available at the first connection attempt. This is frequently the result of an ethernet network module being offline when you attempt to connect to it. Since you are able to connect from FieldPoint Explorer, I suspect something else is going on. The likeliest possibilities that I can think of are:
1) You have more than one ethernet Comm Resource in your IAK file and you have provided the name for the wrong resource (e.g. you may have had a different IP address and created a new Comm Resourcefor the new IP address, but left the old one in place and are using the wrong one).
2) Similar to #1 above, you changed the IP address in
the Comm Resource but did not save the change so there is no module at the IP address it is attempting to communicate with.
3) There is a misconfiguration in the IAK file and the FP-TB-10 shows a listing for a digital module at address 0 rather than an analog module.
4) The module is misaddressed. I have occasionally seen instances where the protective end cover was not installed on the last terminal base and a piece of metal shorted some of the pins causing the addressing to be incorrect. Since this method of failure would also show up in FieldPoint Explorer, I do not think it is likely the root cause of your problem.
5) You have booted the FP-20xx in Safe Mode (although FieldPoint Explorer will not work in this case so I do not think it is likely).
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Regards,
Aaron

Error -200072 using analog input with 3 PXI 6120 cards on realtime mx system

I have just upgraded to the mx drivers for the 6120 S series boards.
I am trying to sample 12 analog inputs at once with a pretrigger. (4 channels per board)
The error message -200072 comes up.
One board works fine, when I add the second board's channels the error occurs.
Each board shows up as A,B,C respectively in MAX and in the Labview browse menu for selecting channels.
Greg Morningstar
Takata

Probably the best way to do this would simply be to use the Route Signal VI to make it to where each of your boards looks at a particular line for the trigger. You can do the same thing for the clock so that they are all sampling at the same time.
You will also want to make sure that your device is defined in MAX. Once you do that, everything should be pretty easy to implement. You might also want to look at some of the examples that show how to do RTSI. It's almost the same as you would do for a PXI system.
Otis
Training and Certification
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National Instruments

I can not read Analog input (a square wave)

I am programming with Labview 7.1 on FPGA. The hardware is PCI7831. With CB-68LP connector, I connect analog input (a square wave generator) to AI0+(68) and AIGND0(67). I try to read it with waveform chart. But I can't get a square wave on the screen. I did check the square wave generator's output. It is correct. The connector CB-68LP connected with PCI7831 on analog port.
I am runing the program on emulation, not on real FPGA.
Thanks

Signal generator I used is 3010 function generator for BK precision. It is an old instrument. I probed output signal from this generator on oscilloscope with signal generator output conected to oscilloscope probe (+) and signal generator ground to probe (groud). It is a square wave.
I suspect the teminal I used for I/O port to PCI7831. Because my coworkers installed the hardware for me, he is absent recently. The terminal is CB-68LP from NI with numbers ( 1 to 68) to specify each connector on it. And I got a SCB-68 Quick Reference Label sheet on my desk to specify numbers correspanding I/O port (for example, 68 -- AI0+). I suspect if this SCB-68 Quick Reference Label sheet matches the terminal CB-68LP?
I will talk to my coworkers next week.
jason

How to Read a Message with Content Type multipart/alternative

Hi ,
I need to write a POP3 Client to read email message ..but some times the messages comes with content type multipart/alternative
how to parse it and read only one of the content :
for example :
This is a multi-part message in MIME format.
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Content-Type: text/plain;
charset="iso-8859-1"
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------=_NextPart_000_12C25_01C6B64F.09226B00
Content-Type: text/html;
charset="iso-8859-1"
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Spt
Open CI Search Code : HPSD
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------=_NextPart_000_12C25_01C6B64F.09226B00--
The Same message is in text as well as HTML so not sure how to read it .
currently my program is as follows
for (int i = 0; i < found.length; i++) {
Message m = found;
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Date date = m.getSentDate();
Address [] from = m.getFrom();
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String mimeType = m.getContentType();
System.out.println(date + "\t" + from[0] + "\t" +
subj + "\t" + mimeType);
Object o = m.getContent();
if (o instanceof String) {
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System.out.println((String)o);
} else if (o instanceof Multipart) {
System.out.print("**This is a Multipart Message. ");
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String mimeType2 = b.getContentType();
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if (o2 instanceof String) {
System.out.println("**This is a String BodyPart**");
System.out.println((String)o2);
} else if (o2 instanceof Multipart) {
System.out.print(
"**This BodyPart is a nested Multipart. ");
Multipart mp2 = (Multipart)o2;
int count2 = mp2.getCount();
System.out.println("It has " + count2 +
"further BodyParts in it**");
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"**This is an InputStream BodyPart**");
} //End of for
} else if (o instanceof InputStream) {
System.out.println("***********************************This is an InputStream message**");
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MimeMultipart mp = new MimeMultipart();
// Assumes character content (not binary images)
} else {*/
BufferedReader reader
=new BufferedReader(new InputStreamReader(is));
String thisLine=reader.readLine();
while (thisLine!=null) {
System.out.println(thisLine);
thisLine=reader.readLine();
So when the Content TYpe is multipart/alternative it goes into InputStream message .
any help and ideas to handel such situations ?
Thanks
San
Message was edited by:
sanrosh_95

Try reposting that with tags (replace the {'s with ['s).
Long story short, I think the FAQ and examples would go a long way towards explaining this, but you basically can check the content type, or check if the content contains parts, and parse each part separately.

Sysgen : How to read the input port data type, width and rate dynamically in a masked subsystem ?

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How to read an IDoc with an ABAP program?

Hi experts!
I am new to SAP and I need to read an IDoc with an ABAP program... how to do it?
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Regards,
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hi
I understand your issue, to pickup an IDOC flat file & post it to R/3 (with or without mapping).
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plz dont forget to reward points if helpful

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How to read 2 analog inputs with VISA

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