The 6ES7901-3EB10-0XA0 is a Siemens SIMATIC S7 spare-part connecting cable, 2.5 m long, purpose-built to link a TD 100C or TD 200C operator panel to an S7-200 base unit.
Listed lifecycle stage is mature — the cable is not current-production but remains available through the surplus and broker channel.
This cable connects the TD 100C or TD 200C text display to the S7-200 CPU via the standard RS-485 port. The 2.5 m length suits panel-door mounting where the HMI sits within arm's reach of the controller.