Mobile module modbus I/O Server

Hi,
Is it possible to establish a communiccation with modbus protocol between the PDA (master) and the slave device via WIFI connection?
I like to do this with configuring the I/O Server, not with the modbus library.
Best regards,
Zdenko.

Hello,
I am sorry to give you a negative answer to your question.
I have LabVIEW Mobile module 2009 and DSC and a PDA target does not support I/O Server.
I have also installed modbus library, but some functions and proprieties under library's vi s are not supported under mobile target.
Probabily you could develop very low level code for mobile to implement modbus server, but it's very complicated.
Regards,
Emil

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Dsc module modbus server handling uint8 variables

Hello!
I have a problem with handling Modbus uint8 variables in the dsc module . Unit8 Shared variables
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http://zone.ni.com/reference/en-XX/help/371618J-01/lvmve/dsc_modbus_using/
In our controller we split some 16 bit modbus registers into two 8 bit variables to pack some more usefull data in there.
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I like the auto-scaling logging and binding of the DSC module shared variables
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James

jamesy777,
The reason Unit8 variables are not available in the Modbus I/O sever is the nature of the I/O server data types compatible with the registers. If you’re writing to two registers, you can just read those two separate registers as U16s in LabVIEW. Otherwise, if you’re writing to the upper and lower half of the register, you can split the register into its 8-bit halves using the Split Number function in LabVIEW.
Split Number Function - http://zone.ni.com/reference/en-XX/help/371361L-01/glang/split_number/
Regards,

Modbus I/O Server at Run-time

Hello everyone.
I needed an software that communicates with a third part PLC (siemens) via Modbus (serial) protocol, and I'm getting some problems with stand-alone application.
I did the following steps:
1- Created a new project;
2- Created a new library;
3- Created a new I/O Modbus Server (serial master mode);
4- Created a variables bounded with a holding register (UInt16) from the PLC.
5- Put that variable on a loop (timed) just to get its value.
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The (simple) project worked fine at my development machine (with LabVIEW 8.6 and Real-Time Module installed), so I created a stand-alone application and an installer of it.
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I also tried to install the software in another PC, that have LabVIEW 8.6 but not the RT module, and it didn't work as well.
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So, what can I do to a software using Modbus I/O Server run in a machine without RT development?
There are some screenshots that I took while running the software at the both (develop. and client) machines above.
Regards,
Leandro Rondon
- Sensoft Indústria e Automação Ltda.
- Work phone: +55 16 3413-5489
- Cell phone: +55 16 8827-4025
- [email protected]

Forgot the images:
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2) running the installed software at development machine
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Multiple errors with DSC modules modbus master and slave

Hi,
I've searched quite a lot of posts but haven't found solution for my problem. I'm playing with LabVIEW DSC module and it's modbus master and slave functionalities. Even the LabVIEWs own modbus examples (Modbus Simulator and Fundamentals) seem to work randomly or not at all: When checking the Variable Manager utility Modbus Simulator (i.e. modbus slave/server) seems to deploy variables correctly with good quality but Modbus Fundamentals (i.e. modbus master/client) most often shows unknown value or bad quality for all the variables. When running the VIs I get 'Error -1950679035 Unable to locate variable in the Shared Variable Engine' and sometimes some other errors too. If the Modbus Simulator (slave/server) is expected to work fine I guess I should get two slaves communicating, but this isn't happening either. So maybe Modbus Simulator example isn't working either.
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V8 has the same feature, but the words are different.
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I set up the Driver timebase to 10 Hz, block size of 1. The Generator and the Read Variable default to the Driver timebase.
The Generator is making a 2 Hz Rectangle waveform. YOu can see that it's shifted, but otherwise intact.
- cj
Measurement Computing (MCC) has free technical support. Visit www.mccdaq.com and click on the "Support" tab for all support options, including DASYLab.

Internal Error 2738 - Can't install Mobile Module 8.6

Hello,
i have installed the LabVIEW 8.6.1 in my notebook.
And i have tried to install the Mobile module 8.6, but i get the error all the time (error 2738).
i have tried to solve the problem by the following link, but the error still appears.
http://forums.ni.com/ni/board/message?board.id=170&message.id=357697&requireLogin=False
i use the windows 7 to install LabVIEW program. Is the mobile module not support the win7?
i hope someone have a solution for this problem... i really do't want to reinstall my system to vistal or xp >_<
Bestregards,
Jaron

Support for Windows 7 is not available yet. The only OS' that are supported are Windows Vista (32- and 64-bit)/XP/2000.
Adnan Zafar
Certified LabVIEW Architect
Coleman Technologies

Projet LabVIEW RT - Logiciel Modbus I / O Server - Labview 7.1

Bonjour,
Je souhaite savoir s'il est possible de mettre en place un projet LabVIEW RT sur ma cible (FP2000 & Labview 7.1) et d'installer le logiciel "Modbus I / O Server" afin de transformer ma cible en esclave Modbus. La cible recevra des requêtes Modbus FTP d'un modem/GPRS (Ewon) pour gérer des alertes et envoyer des SMS.
Est-il possible avec la libraire nimodbus121 d'enregistrer des variables issues du programme sur le FP2000 afin que le modem puisse les lire puis gérer les alarmes et une page internet ?
Dans la doc Introduction to MODBUS j'ai lu que "L'ID est généralement utilisée pour traiter l'esclave MODBUS. Lorsque vous utilisez MODBUS TCP, l'adresse de l'esclave est son adresse IP et l'ID dans l'en-tête MBAP n'est pas utilisé."
Le Modem à besoin de l'ID du FP2000 (entre 1 et 255) et je ne sais pas ou la trouver ?
Merci

Bonjour
en Labivew 7.1 RT, le plus simple est d'utiliser la bibiothèque NI-ModBus disponible sur le site NI Ele est justement écrite en LV7.1.
Par contre attention, cette bibiothèque n'est pas optimisé RT.
Elle ne limite pas le nombre de connexion et lance des thread parallèle.
Cela devrait fonctionné, mais il peut être nécéssaire de limiter le nombre de connexion en revoyant le paralléllisme.
Bonne journée
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Can I write to Modbus I/O Server addresses without creating bound variables?

Hi all,
I'm wondering if it's possible to use the Modbus I/O Server without explicitly creating bound variables?
If I write a value to the bound variable at "ni.var.psp://My Computer/Slave/300001", the master can see the value.
The variable properties paeg says that the variable is bound to "My Computer\Slave.lvlib\ModbusSlave1\300001"
I deleted the bound variable and tried a few different ways to write directly to the I/O Server, but all of them gave me Error 0x8BBB0005. I tried the following:
ni.var.psp://My Computer/Slave/300001
ni.var.psp://My Computer/Slave/ModbusSlave1/300001
ni.var.psp://My Computer/Slave.lvlib/ModbusSlave1/300001
ni.var.psp://My Computer/Slave.lvlib/ModbusSlave1/300001
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Solved!
Go to Solution.

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Deploy Modbus I/O server in multiple library.

I'm using Labview 2009 with DSC. I learn about I/O server with network shared variable by experimenting with Modbus Fundamental project and Modbus Simulator project (LV built in examples). I run both projects in one computer, and the result is OK.
Then I try to make a little modification by adding another library and create modbus I/O server with some bound variables on Modbus Simulator project and Modbus Fundamental project. These new libraries and variables are match in both project, with properties same as original libraries, except different modbus address. I run the project, and the result is always "communication failure" on the new variables in Modbus Fundamental. I have try to deploy and undeploy and also restart the computer, and the result is same.
I try again with removing original library on both Fundamental and Simulator project, leaves only the new library i've added, the result is OK. This indicate that no problem with new library. Why if both libraries exist the "communication failure" always occurs.
Thanks

Hi Jareds,
Thank you for your response.
I think it would be clearer if you open my project file as attached. There are two project folders and screenshoot of the error message.
Yes, of course i open and run them simultanously since this experiment is to demonstrate modbus communication (master and slave).
As i said before, actually i just made little modification on Labview's example project by add one library with modbus I/O and some variables.
Imagine that I want to communicate with multiple modbus devices (slave), in this project there are two modbus slave, ie. the first with address 1 (original as Labview's example) and the second with address 5 (new).
Hope you can understand what i mean.
Thanks
Attachments:
Modbus IO in Multiple Libraries.zip ‏122 KB

Modbus I/O server & Shared Variable Engine

小弟做專題用到Labview，想請教一個問題，目前是用labview對智慧電表讀取資料
主要用modbus I/O server(TCP/IP模式)和shared variable engine
但是網路上大多數資料是教學如何建立I/O server和設定shared variable
小弟想知道背後理論是什麼？
例如：labview如何對modbus TCP/IP的封包進行處理，並取出所要資料。
謝謝各位指教

建議使用 google
關鍵字 = labview shared variable concept

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How can i make iphone mobile website, database in Sql Server 2005 ?

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Unflatten From String Not Functioning in Mobile Module 2011

Mobile Module does not get updated since version 2011. I am not sure my question will be solved.
I have been using Simple Messaging Reference Library (STM) for a couple of years. I use them in my Mobile Module code too. It has been working fine until lately I updated to the latest version of STM.
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MengHuiHanTang wrote:
Mobile Module does not get updated since version 2011. I am not sure my question will be solved.
I have been using Simple Messaging Reference Library (STM) for a couple of years. I use them in my Mobile Module code too. It has been working fine until lately I updated to the latest version of STM.
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My questions are
1). 'Unflattern From String' was changed so it is not supported in Mobile Module 2011?
2) Why the same code worked before, but not now?
I use LabVIEW 2011 and Mobile Module 2011. Thanks.
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(Mid-Level minion.)
My support system ensures that I don't look totally incompetent.
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Cannot load d:\oracle\apache\apache\apache\modules\orajipa8i.dll into serve

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HTC PDA deployment problem using Mobile Module

Hi all,
I am trying to connect my HTC PDA Kaiser (TyTN II) to a customized device using the miniUSB port. This PDA runs Windows Mobile 6, I am using Labview 8.6 (and I am using the Mobile Module - former PDA module) on Windows Vista.
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Kind regards,
Edgar Charry
Attachments:
Error Msg.jpg ‏166 KB
BuildReport.txt ‏1 KB

Hi Anna,
Thanks for the reply. Yes, it is Windows Vista 32-bit Home.
Certainly the reason is that the builder looks after these two files, that simply doesn't exist. I know it, because I looked for them, and found on the PocketPC2003 - smartphone folder (..\Labview 8.6\PDA\Utilities\VC\Smartdevices\SDK\PocketPC2003\include and lib). And the only one I can at least emulate is indeed the PocketPC2003 SmartPhone!
So, if your emulator for the Windows Mobile 6 platform works (emulates any VI), could you please give me the correct path of the Windows Mobile 6 and also the files? Here I have: ..\Labview 8.6\PDA\Utilities\VC\Windows Mobile 6 SDK\PocketPC\Deviceemulation\Pocket_PC (and a couple of others, which are pretty much empty - no header files or libraries there, just the PNG files of the figures of the emulators). That's it.
I tried copying the lib and the include folders there, but also didn't work....
Thanks Anna,
Edgar Charry

Call precompiledDll in mobile module

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magicofavalon1
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magicofavalon1
It may also be that you need to reference the location of the libraryand manually copy it to the LabVIEW mobile device before you build it.
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Mobile module modbus I/O Server

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