The Siemens 6ES7923-0BG50-0DB0 is a shielded pre-assembled round cable that links the front connector module of a SIMATIC S7-300 or S7-1500 PLC to a remote connection module — think of it as the umbilical between the I/O card and the field wiring termination point. It's built for both digital and analog signal transmission, with a braided shield to keep noise off sensitive analog lines. The 6.5 m length gives enough reach to route from the rack to a junction box or marshalling cabinet without splicing.
Rated at 24 V and tested to a maximum of 60 V — that covers the standard 24 VDC control voltage used across S7-300/1500 I/O modules, with headroom for transient spikes. The 16-conductor, 0.14 mm² round cable terminates in IDC connectors at both ends: 16 poles at the cable-side front connector module and 16 poles at the connection module. The 7 mm outer diameter and PVC sheath make it manageable in a wireway or cable duct. Eight channels are supported per cable, matching the typical 8-channel digital or analog input/output module.