Pre-assembled shielded I/O cable for S7-300/1500
The Siemens 6ES7923-0BD00-0DB0 is a pre-assembled shielded round cable purpose-built for SIMATIC S7-300 and S7-1500 systems. It connects a 16-pole front connector module to a 16-pole connection module, carrying both digital and analog I/O signals across a 3 m length. The braided shield and PVC sheath (7 mm outer diameter) keep noise out of the signal path in electrically noisy cabinet environments.
What the ratings mean for fit
Rated at 24 V with a maximum of 60 V — this cable is designed for the 24 VDC I/O bus typical of S7-300/1500 modules, not for higher-voltage field wiring. The 16 conductors at 0.14 mm² each handle signal-level currents; do not use for power distribution. The 3 m length is fixed — no field cutting or re-termination of the IDC connectors. The 8-channel count matches the typical 8-channel digital/analog input or output module, with two conductors per channel (one signal, one common) plus shield drain.
Deployment context
This cable sits between the front connector on the S7-300/1500 module and a remote connection module — useful when the I/O module is inside a control cabinet but the field wiring termination needs to be at a separate marshalling panel or junction box. The IDC connectors on both ends mean the cable is factory-terminated; no field crimping or screw termination required. Operating temperature range is 0 to 60 °C, storage -30 to +70 °C.