Establish the Connection Using the Add-On Profile

The Add-On Profile (AOP) establishes an implicit messaging connection between a single ControlLogix PLC A Programmable Logic Controller is a ruggedized computer that you can use for automating processes or even an entire production line. and an In-Sight vision system.

To establish a connection using the AOP:

1. Open RSLogix 5000 and load the PLC project.

   Note: The PLC must be Offline to add connections in RSLogix 5000.

2. Under the I/O Configuration node, select the Ethernet Node under the Ethernet Module, right-click on the icon and select New Module from the menu:

   

3. When the Select Module Type dialog appears, select your model of In-Sight Vision System from the list and click Create. This option appears once the AOP is installed.

   

   The New Module dialog appears.

4. In the General tab, configure the following:

   

   • Name: Specifies the name of the generic EtherNet/IP device. The tags created in RSLogix 5000 are based on this name. Cognex recommends that you use the name of the In-Sight vision system to maintain consistency.
   • IP Address: Specifies the IP address of the In-Sight vision system.
   • Host Name: Specifies the host name, use this setting if there is a Domain Name Server (DNS) on the network.

5. Click Change and set the amount and type of data to be transferred between the In-Sight Vision System and the PLC.

6. Optional: To disable electronic keying, select 10 for Revision and select Disable Keying in the same dialog, then click OK.

   

7. Go to the Connection tab on the left side of the New Module dialog. Configure the following fields:

   

   • Requested Packet Interval (RPI): specifies the amount of time, in milliseconds, between data exchanges across an implicit messaging connection. In-Sight vision systems support cyclic connections with cyclic times ranging from 2–8000 ms.

     Note: For best results, Cognex recommends that you set the RPI time to no more than half the time between when the In-Sight vision system completes the job A job is a user-configured program in In-Sight 3D Spreadsheet consisting of functions and designed for specific applications. You can create and edit jobs using the In-Sight 3D Spreadsheet interface, and load them on a vision system for deployment in a live environment. execution and when the PLC requires the data.
   • Major Fault On Controller If Connection Fails While in Run Mode: Checking this box causes the controller to generate a major fault when the connection fails.

   • Inhibit Module: Checking this box prevents the PLC from attempting to establish a connection with an In-Sight vision system.

     Note: If the In-Sight vision system appears to be stuck in "Standby" mode, then inhibiting and re-enabling the module can cause the module to become operational again.

8. After adding the module to ControlLogix, the I/O tree should appear as follows:

   

9. RSLogix 5000 creates tags that map to the input and output data of the In-Sight vision system.

   You can see the following tags depending on the name given to the generic EtherNet/IP device:

   • IS2800_AOP:I Scheduled Input

     The following data is sent from the vision system to the PLC:

     

   • IS2800_AOP:O Scheduled Output

     The following data is sent to the vision system from the EtherNet/IP client: