The Siemens 6ES7923-0CG00-0AA0 is a round-sheath ribbon cable purpose-built for SIMATIC S7-300 and S7-1500 digital I/O modules — 16 cores, 0.14 mm² each, in a 9.5 mm black PVC sheath, cut to 60 m. Rated at 24 V with a maximum of 60 V, it handles the signal-level wiring between a PLC rack and field devices without analog capability (digital signal transmission only).
The 24 V rated value matches the standard PLC I/O bus voltage; the 60 V maximum gives headroom for short spikes or non-standard supplies, but this is not a power cable. The 60 m length is the full reel — no cutting to a shorter custom length. Each of the 16 cores is coded (marked along the sheath), which saves time during panel termination. The 0.14 mm² cross-section is fine for signal-level currents (typical digital input sink or output source) but not for loads above a few hundred milliamps per channel. The PVC sheath is rated for indoor use; if the panel sees sustained heat above 60 °C, derate or shield the cable run.