Academic Company Events NI Developer Zone Support Solutions Products & Services Contact NI MyNI
2 ratings:
 3 out of 5     Rate this Document

Integrate NI DeviceNet Interface into a PLC-based DeviceNet Network

Primary Software: Driver Software>>NI-DNET
Primary Software Version: 1.5
Primary Software Fixed Version: N/A
Secondary Software: N/A
Hardware: Industrial Communications>>DeviceNet>>PCI-CAN (DNET), Industrial Communications>>DeviceNet>>PCMCIA-CAN (DNET), Industrial Communications>>DeviceNet>>PXI-8461 (DNET)

Problem:
I have a DeviceNet network with the Allen-Bradley PLC as the DeviceNet master. I use RSLinx, RSNetworx and RSLogix to configure the DeviceNet devices. How can I integrate a National Instruments PXI system into my existing network?

Solution:
You can integrate a National Instruments PXI system into your DeviceNet network in the following steps:
  1. Make the NI DeviceNet interface work as a DeviceNet slave. The NI interface usually works as a DeviceNet master. You can set the interface to slave mode by setting the DeviceMacId parameter in ncOpenDnetIO (Open DeviceNet IO.vi) as IntfMacId for ncOpenDnetIntf (Open DeviceNet Interface.vi). You can use the attached Slave Device.vi.
  2. Import the Electronic Data Sheet (EDS) file for the NI DeviceNet interface The DeviceNet network configuration tool, like RSNetworx, needs to import the attached EDS file to identify a slave device. The steps to import an EDS file in RSNetworx are:
    1. Click the menu Tools»EDS Wizard... to open Rockwell Software's EDS Wizard.
    2. Select Register an EDS file and click Next.
    3. Select Register a single file, click Browse... to specify the EDS file, and then click Next.
  3. Browse and configure the slave in RSNetworx.
    1. If RSNetworx is offline, click the menu Network»Online to go online.
    2. Click the menu Network»Single Pass Browse to browse the network. Then you can see the slave "NI DeviceNet Interface". (Make sure the slave VI or application in step 1 is running).
    3. Right click the slave device node and click the menu Properties... to configure the slave and map the I/O into the PLC memory.
  4. Connect the signals to the DeviceNet slave In the slave VI or application, you can use ncReadDnetIO (Read DeviceNet I/O.vi) to receive the signals from the PLC and use ncWriteDnetIO (Write DeviceNet I/O.vi) to send the signals to the PLC.
A LabVIEW example of a Slave Device.vi and the EDS file for NI-DNET 1.5 can be found in the Attachments section below. The document is suitable for NI-DNET 1.5 and above.

Related Links:
Products & Services: DeviceNet Interfaces



Attachments:


Slave Device.viNidnet1.5.eds

Report Date: 05/19/2006
Last Updated: 05/08/2008
Document ID: 3XI8G2BV

Your Feedback! poor Poor  |  Excellent excellent   Yes No
 Document Quality? 
 Answered Your Question? 
  1 2 3 4 5
Please Contact NI for all product and support inquiries.submit