Configuring Modbus

[popul]

Good Day!

Ihave Trouble using modbus.. I wanna configure a shared variable for a specific channel in my daq..

Im using NI 9426 in the slot 1 of NI CRIO 9075..

I cant understand how to pick an data item in Creating Bound Variables

Could somebody give me an example of data item, i wanna make an shared variable for DI0 of NI 9426..

Im using I/O server in ethernet..

Thank You!

[Dave_Brandt]

Are you using the LabView DSC module? OPC server ? Modbus library? There are so many ways labview can communicate to a Modbus master or Modbus slave? We need more information. For a cRIO I would use the Modbus library to communicate to a Modbus master.  

[popul]

Hi! 
I'm using modbus library (i think).
I'm configuring modbus in the project explorer so that i can easily drag the shared variable to the VI..

[Jacobson-ni]

It sounds like you are using I/O servers, does the link below look correct?

http://zone.ni.com/reference/en-XX/help/370622M-01/lvmve/dsc_modbus_using/

There are a couple of different ways to do this, can you explain what software you have? Also are you trying to communicate with a particular modbus slave or are you using the cRIO as a modus slave?

[popul]

Yeah the link u gave is correct..
But I cant understand the syntax of the data item...
I just want to create a bound variable that is connected to the DI0 of the NI 9426...
and create a VI where i can just drag the created variable then connect it to boolean led

so when the NI 9426 DI0 recieve a HIGH it will trigger the boolean led..