Necesito comunicar Un plc cubloc conlabview

[kari386]

Necesitocomunicar un PLC cubloc con labview 8.5 tengo un servidor OPC de national instruments la comunicación tieneq ue ser mediante modbus serial, mi pregunta es: Es necesario tener un modulo DSC para poder realizar la comunicacion, o es suficiente con el OPC server, y si es asi como la puedo realizar. No estoy segura de como usar datasockets en labview 8.5.

[James_W]

Hola Kari, 

Nos preguntamos: " La pregunta en Ingles por favor?"

Hay alguien Espanol por aqui:  ( )- Soy Ingles

http://forums.ni.com/ni/board?board.id=6170

James

[kari386]

Hi I need to comunicate a Cubloc PLC with Labview using modbus serial my cquestion is if i need to have a dcs module and an OPC server or if i only  need the opc server, and if I only need the OPC server how can i do it, because i cant find the I/O Server in LabVIEW Projec.

Thanks

[unclebump]

If you don't need to access a large quantity of data, you could probably use the NI modbus library. Describe your application requirements in more detail.

http://zone.ni.com/devzone/cda/epd/p/id/4756 

There could be newer versions of this software on the website.

[kari386]

I was reading a little about modbus library but i am no sure if i can use it for digital inputs.... i am making a scada system to comunicate 5 plc modules for a cubloc plc.

[unclebump]

you can read the status of the digital inputs, but probably not write directly to them. Modicon plcs had a 1X3X loadable function block that let you write directly to inputs from register values.

[kari386]

Do you have any examples or a tutorial tolearn how to use the modbus library? do i still need to have an opc server with the modbus library?

[unclebump]

you do not need the opc server when using the modbus library. With the modbus library you have to configure all of the communication stuff and control which data ranges you are working on. The OPC server stuff takes care of all of the communication stuff in the background. Labview just needs to read/write tag values then. search unclebump and modbus query for some examples. There is a ton of modbus serial and modbus tcp info in the forums.

[N\A]

Has your issue being resolved?

here is a link to the OPC Server for Modbus:

http://www.matrikonopc.com/opc-drivers/opc-modbus/base-driver-details.aspx

Let me know if you need any help

Wassim