The Siemens 6ES7923-5BB00-0EB0 is a pre-assembled round cable purpose-built for wiring SIMATIC S7-300 and S7-1500 digital I/O modules to a remote connection module. It uses IDC connectors on both ends — one 16-pole connector at the front connector module side and one 50-pole connector at the connection module side — so the entire 50-conductor bundle terminates in a single plug-and-play assembly rather than individual ferrule terminations. The cable is unshielded, PVC-jacketed, 1 m long, with a 10.3 mm outer diameter and 0.14 mm² conductors.
Rated at 24 V with a maximum of 60 V, this cable is sized for the 24 VDC signal levels typical of S7-300/1500 digital input and output modules — not for power distribution or analog signals (the listing explicitly states no analog signal transmission). The 50-conductor count matches the 50-pin connection module interface, and the 16-pole front connector end breaks out into four groups of 16, which aligns with the standard 16-channel digital I/O module format. The 1 m length is a fixed assembly; if the panel layout requires a longer or shorter run, a different order code in the same family would be needed.