Graybus cable is a rugged fieldbus cable for industrial automation, process control, and factory networks. It connects PLCs, drives, sensors, and remote I/O with stable impedance and strong shielding. Common models include Graybus-DP for PROFIBUS DP, Graybus-PA for process automation, Graybus-CAN for CANopen, Graybus-RS485 for Modbus, and Graybus-PN for PROFINET. Typical specifications vary by model. Conductors use stranded bare copper from 0.22 to 1.0 mm2. Common constructions are 1x2x0.64 mm, 1x2x1.0 mm, 2x2x0.75 mm, and 4x2x0.5 mm. Characteristic impedance is 100 ohm, 120 ohm, or 150 ohm. Capacitance is about 40-60 pF/m. Voltage rating is 300 V. Operating temperature is -40C to +80C for fixed use and -20C to +70C for flexing. Shielding usually combines aluminum foil and tinned copper braid. Jackets may be PVC, PUR, PE, or halogen-free LSZH. Flame retardancy can meet IEC 60332-1 or UL, and some versions resist oil, UV, and drag-chain motion. Some armored or water-blocking versions are available for harsh plants and outdoor routes. To select a Graybus cable, match the protocol, impedance, bend radius, and environment. Check model codes for conductor size, pair count, shield, jacket, and approvals. Proper grounding, termination, and distance limits keep the bus reliable. In short, Graybus cable models and specifications must align with the bus system for long-term, low-error industrial communication. Always verify the datasheet and local codes before ordering and installation.