The Siemens 6GT2891-0MH50 is a pre-assembled IO-Link connecting cable from the SIMATIC RF family, purpose-built to link an IO-Link master to an IO-Link reader or sensor. It is a 4-core, unshielded cable with M12 male-to-female connectors on both ends, straight pinout, and a 5 m wire length. The 30 V maximum rating covers the typical 24 VDC IO-Link supply, so it handles both the power and data pair on the same 4-pin M12 without needing a separate power cable.
Rated for a maximum of 30 V, this cable is sized for standard IO-Link device-level power (typically 24 VDC) and signal transmission. The 5 m length is a common drop length for connecting a sensor or reader mounted on a conveyor or machine frame back to a nearby IO-Link master in the panel or junction box. The cable is unshielded, which is acceptable for IO-Link communication in electrically quiet environments; if your run passes near VFD cables or welding supplies, a shielded variant would be the safer call. The cable jacket is PUR (polyurethane), black, with a flame resistance rating per AWM STYLE 21317: VW-1 for US applications and FT-1 for Canadian installations. That matters if the cable runs inside a cabinet or cable tray where flame spread is a code concern. The insulation on the individual wires is PVC, and the conductor designation is LiY-11Y 4xAWG 22/19 — four 22 AWG stranded conductors, each with 19 strands, which gives good flexibility for routing in tight spaces. Loop resistance is 108 mΩ/m maximum, and insulation resistance is 20 GΩ·m — both well within spec for reliable IO-Link communication at 5 m. Minimum bend radius is 34.4 mm for a single bend, 64.5 mm for multiple bends, so plan your cable routing accordingly to avoid signal degradation or jacket stress.
Deployment context
This cable is a plug-and-play link between an IO-Link master (typically mounted on a DIN rail in a control panel) and an IO-Link device such as an RFID reader or smart sensor out on the machine. The M12 connectors are industry-standard for factory automation sensors — straight male on one end, straight female on the other — so it mates directly with standard IO-Link ports without adapters. The 4-pin configuration carries both power (brown/white) and data (blue/black) per the IO-Link pin assignment standard.