Allen-Bradley 1763-NC01 Communications Cable

Configured for serial data transmission in MicroLogix 1100 control networks, the Allen-Bradley 1763-NC01 (1763-NC01 Communications Cable) provides direct physical execution of RS-485 signal bridging. This interface cable, measuring 30 cm in length, connects controller communication ports to external peripherals or terminal blocks, facilitating electrical connectivity for PLC module network expansion and data exchange.

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks & Firmware Flash Compatibility

The 1763-NC01 facilitates the underlying physical layer for serial communication. While this component is a passive cabling element, it must be integrated within architectures adhering to RS-485 electrical standards to ensure signal integrity across deterministic network segments. Firmware flash compatibility and communication velocity are managed by the host MicroLogix 1100 processor; ensure that the baud rate and parity settings defined in the controller's communication channel configuration match the requirements of the connected slave device to prevent framing errors or packet loss during transmission.

Frequently Asked Questions

Q: Can the 1763-NC01 cable be extended beyond the original 30 cm length?

A: Extending the cable length beyond the manufacturer-specified 30 cm requires high-quality, shielded twisted-pair cabling to minimize signal attenuation and noise pick-up. Excessive length may violate RS-485 signal integrity constraints, resulting in intermittent communication failures.

Q: Is this cable shielded against electromagnetic interference?

A: The 1763-NC01 is designed for standard industrial control environments. When routing near high-voltage lines or inductive loads, maintain adequate physical separation to prevent induced noise from corrupting serial data frames.

Field Installation Guidelines

• Connector Seating: Ensure the 8-pin mini DIN connector is fully inserted into the MicroLogix port until the latch engages. Misaligned pins can cause electrical shorts or permanent damage to the controller's communication port.
• Terminal Block Termination: Secure the wires in the 6-pin terminal block ensuring no loose strands are present. High-resistance connections at the terminal block can cause voltage drops that impair serial communication stability.
• Grounding: If the cable is routed through an environment with high common-mode noise, ensure the system common is bonded to a clean earth ground to provide a stable reference for the RS-485 differential signals.
• Strain Relief: Provide adequate strain relief for the cable near both the DIN connector and the terminal block to prevent physical stress on the wire solder points during cabinet vibrations.