Cutler-Hammer DeviceNet Thick Trunk Cable D970DNKMM20

The Cutler-Hammer D970DNKMM20 is a thick trunk cable designed for DeviceNet industrial communication networks, providing reliable data transmission and power distribution in automation environments. Manufactured by Cutler-Hammer (now part of Eaton), this cable supports high-speed communication up to 500 kbps over distances suitable for trunk lines in control systems. Key features include a rugged PVC jacket for durability in harsh industrial settings, with resistance to oil, chemicals, and mechanical stress. It carries both 24V DC power and CAN-based signals, making it ideal for connecting PLCs, sensors, motors, and other devices in manufacturing, automotive, and process control applications. Advantages over similar products include superior noise immunity due to its shielded twisted-pair design, higher current capacity for longer runs, and compatibility with ODVA DeviceNet standards. Drawbacks may include higher cost compared to thin drop cables and the need for proper termination to avoid signal reflection. Based on attached images, the cable appears used, with visible dirt, minor abrasion, and no apparent damage to the insulation. It is coiled without visible connectors, suggesting it may be a cut length or bulk cable. No serial number is evident on the label, but a DOM code (06030SE) indicates possible manufacture around 2006. Estimated length from model decoding is 20 meters, suitable for medium-distance trunk installations. For resources, refer to Eaton's DeviceNet cable datasheet (available at https://www.eaton.com/content/dam/eaton/products/automation-sensors/networking/devicenet/devicenet-cable-brochure.pdf) and model decoder guide (search Eaton support for DeviceNet part number breakdown).