What this cable is for
The 6ES7923-0BJ00-0DB0: Pre-assembled shielded round cable for SIMATIC S7-300 / 1500 systems — runs between the front connector module and the connection module. 16 poles, 8 m long, terminated with IDC connectors at both ends. Suited for both digital and analog I/O modules, so it covers mixed-signal cabinets without needing separate cable runs.
Rated at 24 V, maximum 60 V. The 24 V rating matches standard PLC I/O supply levels — no derating needed for 24 VDC digital inputs or 4-20 mA loops. The 60 V ceiling means it handles 48 VDC field devices and some low-voltage analog signals without exceeding the insulation rating. Conductor cross-section is 0.14 mm², sized for signal-level current, not power.
Physical build and deployment
Round cable, 7 mm outer diameter, black PVC sheath with a braided shield. That shield keeps electrical noise off the signal pairs — important when the cable runs alongside drives or contactors in the cabinet. Wire length is a fixed 8 m; no daisy-chaining or field termination. The IDC connectors mate directly to Siemens front connector modules and connection modules — no screw terminals, no wiring errors at the connector end.