Siemens 6ES7131-6BF61-0AA0 SIMATIC ET 200SP DI 8x24V DC SRC BA Remote I/O Module

The Siemens 6ES7131-6BF61-0AA0 is a SIMATIC ET 200SP digital input module with 8 sourcing (NPN) inputs rated 24V DC, IEC 61131 type 1, parameterizable input delay from 0.05 to 20ms. It mounts on BaseUnit type A0, reports supply-voltage diagnostics over PROFINET or PROFIBUS, and occupies 15mm of DIN-rail width per channel group.

Technical Specifications

Selection Notes

The sourcing (NPN, M-reading) wiring means each input switches to signal 1 when the sensor pulls it toward 0V - pick the sinking/P-reading DI 8x variant instead if field sensors are wired to switch toward 24V. Input delay is parameterizable from 0.05ms to 20ms per channel, so fast counting or edge-sensitive signals can use the short setting while noisy field wiring can use a longer filter without swapping hardware. It shares BaseUnit type A0 with the matching 8-channel digital output module in the family, so a DI/DQ pair for a machine cell can sit on adjacent slots using the same wiring accessories.

Applications

Used for standard 24V DC sensor and switch inputs on ET 200SP I/O stations - proximity sensors, limit switches, push-buttons - wherever PROFINET or PROFIBUS diagnostics down to the module level are wanted without a fail-safe rating.