Allen-Bradley CompactLogix
In order to enable PLC – PLC communication using the Consume and Produce tags, an EtherNet/IP controller must be installed at Allen-Bradley (AB). It is not possible to use a Beckhoff controller with AB, therefore an Allen-Bradley controller must be created in the configuration tool.
- 1. Click Ethernet; you can create a new module with the right mouse button. Select New Module…
- 2. Then select a controller, for example 1756-EN2T.
- 3. Now enter the IP Address of the Beckhoff controller or the IP Address of the Beckhoff EtherNet/IP Scanner. In addition, the controller requires a name.
- 4. Select Disable Keying under Module Definition. In addition, select the value “None” for both Rack Connection and Time Sync Connection.
- 5. Now you have to create a PLC. Select 1756-L61, for example, and click Create:
- 6. Enter a name for the controller, e.g., CPU_2; this name is still needed later when you create the ConsumedTags.
- 7. Insert a new DINT variable under Controller Tags. Create it as type Consumed.
- 8. Now click Connection. Select the controller from which you want to receive the data. This requires the name that was assigned during configuration (in this example CPU_2). Furthermore, the tag name, which was also assigned in the TwinCAT controller (here: TwinCAT_IN_0) and the RPI time are required. The RPI time should always be greater than or equal to the SyncTask of the EtherNet/IP Scanner in TwinCAT.
- 9. Now insert another DINT variable and configure it as Produced. It is only important to use the same name as in TwinCAT for the Consumed connection (here TwinCAT_Out_0).
