Siemens 6ES7141-4BF00-0AA0 SIMATIC ET 200pro EM 8DI 24V DC Remote I/O Module

The Siemens 6ES7141-4BF00-0AA0 is a SIMATIC ET 200pro digital input module with 8 channels rated 24 V DC. Each channel follows the IEC 61131 type 1 characteristic curve and switches in 1.2 to 4.8 ms, drawing under 20 mA from the 24 V supply and 20 mA from the 3.3 V backplane bus, with per-module short-circuit-protected encoder supply outputs and diagnostics reported through the backplane bus.

Technical Specifications

Selection Notes

Use the 6ES7141-4BF00-0AA0 where the station needs sourcing-type (P-reading) digital sensing at IEC 61131 Type 1 thresholds - the 1.2 to 4.8 ms input filter rejects contact bounce without adding meaningful delay to the scan cycle. Its 2-wire sensor compatibility, with a permissible quiescent current up to 1.5 mA, allows direct connection of proximity switches wired without a separate return line. The module still needs its own bus module and I/O connection module, ordered separately, to complete the backplane slot.

Applications

Digital sensor inputs in distributed SIMATIC ET 200pro stations - proximity switches, limit switches, and other 24 V DC sourcing-type field devices in machine and line-level automation where module-level diagnostics are needed close to the field.