Cable fit for S7-300 and S7-1500 I/O
The Siemens 6ES7923-0CG00-0BA0 is a round-sheath ribbon cable designed for SIMATIC S7-300 and S7-1500 systems. Its 16 cores at 0.14 mm² each carry both digital and analog signals from the I/O modules to the field devices, with the braided shield keeping noise off the analog lines. The 60 m wire length covers most cabinet-to-field runs without a splice point — the continuous length avoids the impedance discontinuity a junction would introduce on the analog pairs.
Voltage rating and signal integrity
Rated at 24 V nominal with a 60 V maximum — the 24 V is the standard PLC I/O bus voltage; the 60 V ceiling means the cable can handle the transient spikes from inductive loads switching on the same harness without breaking down the PVC jacket or core insulation. The round-sheath design with coded wires simplifies termination: each core has a unique marking so the harness builder can trace it to the correct terminal without a continuity check on every wire.