Cable construction and field termination
The 6ES7923-1BB00-0HD0 is a shielded connection cable for the SIMATIC ET 200SP HA I/O system, terminated on one end with a 37-pole D-sub connector and on the other with bare ends fitted with wire end sleeves. This gives you a clean, labeled 20-channel interface at 1 m length, using 0.56 mm² conductors — sized for the signal-level currents typical of digital and analog I/O modules in the ET 200SP HA family.
What the 20-channel count means for your wiring plan
The 20 channels correspond to the signal pairs routed through the 37-pin D-sub — a standard pinout for ET 200SP HA modules that address up to 20 I/O points per connector. The bare-end termination with wire end sleeves is intended for direct landing on terminal blocks inside the control cabinet; the labeling on each conductor matches the channel assignment on the module, which saves time during commissioning and troubleshooting. The 0.56 mm² cross-section (roughly AWG 20) is within the acceptable range for spring-cage and screw terminals on most DIN-rail terminal blocks.