This is a pre-assembled shielded round cable, order code 6ES7923-5BB00-0DB0, purpose-built for SIMATIC S7-1500 systems. It links the front connector module on an I/O card to the connection module on the enclosure door or sub-DIN rail — carries 50 conductors at 0.14 mm² each, terminated at both ends with IDC connectors. Rated for the 24 V signal level typical of S7-1500 digital and analog I/O, with a maximum voltage of 60 V across the bundle. The braided shield and round profile (11 mm outer diameter, PVC sheath) keep it clean in a crowded cabinet — the IDC termination saves the panel-builder's time over screw-clamp field wiring for a 50-pole run.
Sourcing & lifecycle — active, no last-call panic
Lifecycle status is active — this cable is not on phase-out or NRND. No successor code has been issued because none is needed.
Two 50-pole IDC interfaces: cable-side front connector module and enclosure-side connection module. The 1 m length is standard for a cabinet where the I/O rack sits above the wiring duct. Rated voltage of 24 V tracks the S7-1500 backplane signal level; the 60 V maximum gives headroom if you're switching 48 V DC field devices through the same cable. 32-channel I/O modules map cleanly onto the 50 conductors — 32 signals plus commons and shields leave spare cores. Operating temperature range 0 to 60 °C covers the inside of a ventilated panel; storage range -30 to +70 °C matters for spares kept in an unheated warehouse. The braided shield handles EMC on a mixed digital/analog cable run — keep the shield grounded at the panel end only.