ControlLogix® Peer-to-Peer I/O
With the inclusion of Peer-to-Peer I/O Control, the latest additions to the ControlLogix family of I/O deliver signifi cant performance improvements, increasing production capacity and minimizing system response time. Three high speed I/O peer devices have been added to the ControlLogix platform off ering individual benefi ts and, when used in combination, provide Peer-to-Peer I/O Control with nominal screw-to-screw speed of < 100µS. PLC (Programmable Logic Controller)
Peer-to-Peer I/O Control is a new capability inherent in the recently introduced ControlLogix I/O modules. Peer I/O devices (modules with peer-to-peer control capabilities) establish in-chassis connections that allow them to communicate directly with each other. Outputs are then energized based on data received from the input peer, independent of the controller. When this method of control is employed, screw-to-screw throughput speeds are drastically reduced resulting in higher machine speeds and increased parts production. Here’s how it works:
- The input peer module is confi gured as normal with dedicated profi les to “produce” data to the control system.
- The output peer module is confi gured to “listen” for data from an Input Peer and energize its outputs via a dedicated boolean editor in the profi le.
- In run mode, the output module “listens” for the data the input module is producing.
- The output module energizes outputs when it “hears” the required parameters.