Field note
The 6ES7141-1BF01-1XB0 is the electronic top block for the ET 200X basic module BM 141. It provides 8 digital inputs and is designated as a service-only part — no plug-in PCB, meaning it's the fixed I/O slice that mates with the base unit. It belongs to the SIMATIC DP ET 200X family, a distributed I/O system for Siemens S7 platforms.