2711P-RN15C ControlNet Communication Module | Allen Bradley

Configured for ControlNet network communication in HMI platforms, the Allen Bradley 2711P-RN15C (2711P-RN15C ControlNet Communication Module) provides direct physical and electrical execution of data transmission between PanelView Plus terminals and the ControlNet network.

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks

The 2711P-RN15C utilizes standard ControlNet protocol specifications to ensure deterministic communication timing between the PanelView Plus terminal and the automation network. The backplane bus communication velocity is optimized for 5 Mbps data exchange, requiring proper termination of the RG-6 coaxial cabling to maintain signal integrity. I/O density scaling and node addressing are managed through the ControlNet configuration tools, ensuring that the module operates within the 99-node network limit. Firmware flash compatibility should be verified against the HMI terminal firmware version to ensure correct protocol stack execution and register status reporting via the diagnostic LED array.

Frequently Asked Questions

Q: Can the 2711P-RN15C be powered independently of the HMI terminal?

A: No. The module derives all required operating power directly from the PanelView Plus HMI terminal bus interface. Do not attempt to supply external power to the module's backplane pins as this will result in permanent damage to the module circuitry.

Q: What are the primary termination requirements for the BNC interface?

A: The ControlNet segment requires a 75 Ohm coaxial termination resistor at both physical ends of the trunk line. Use RG-6 coaxial cable compliant with ControlNet standards to minimize signal attenuation and reflections.

Field Installation Guidelines

1. Terminal Preparation: Power down the PanelView Plus terminal before installing the communication module to prevent electrical shorts on the backplane bus.
2. Module Insertion: Align the 2711P-RN15C with the expansion slot on the rear of the HMI terminal. Press firmly until the module is fully seated and the mechanical latch engages.
3. Coaxial Connection: Connect the RG-6 coaxial cable to the BNC connector. Ensure the connector is fully locked to maintain a 75 Ohm characteristic impedance.
4. Diagnostic Check: Power on the terminal and observe the status LEDs. Verify that the module completes the power-up self-test sequence and successfully joins the ControlNet token rotation.
5. Grounding: Maintain the integrity of the coaxial shield grounding at the tap point to provide adequate EMI/RFI shielding for the network segment.