What it is and where it fits
The Siemens 6ES7923-5BC00-0GB0 is a pre-assembled round cable that connects the I/O module X10 or X11 on a SIMATIC S7-1500 to a 32-channel connection module. It carries 40 conductors on a 40-pole IDC connector at one end and a 50-pole connector at the module end, routing 32 digital I/O signals between the backplane and the field termination. Rated at 24 V with a maximum of 60 V, the cable is sized for the signal levels typical of S7-1500 digital input and output cards. The 2 m length covers the span from the I/O module to a nearby connection module inside the same cabinet.
Cable construction and handling
Each conductor is 0.14 mm², PVC-jacketed, with an overall sheath diameter of 10.3 mm. The cable is unshielded — fine for digital signals inside a grounded steel enclosure, but not suitable for analog signal paths or runs near variable-frequency drives without additional screening. Both ends terminate in connector strips (IDC on the cable side, connector strip on the enclosure side), so the cable drops in without field wiring. The 40-pole IDC connector mates to the I/O module; the 50-pole connector attaches to the connection module. Operating temperature range is -30 to +60 °C; storage range extends to +70 °C.
Lifecycle and sourcing
For a BOM line that needs this exact order code, the part is quoted to order against an RFQ. The 2 m fixed length and 40-pole IDC interface are specific to the S7-1500 64 I/O architecture — verify the connection module pole count (50 poles at the module end) before committing the line.