ET 200 PRO Digital Input Module — 8 Channels, 24 V DC
The 6ES7141-4BF00-0AA0 is a SIMATIC DP electronic module for the ET 200 PRO distributed I/O system, providing 8 digital inputs at 24 V DC with module-level diagnostics. It mounts directly into the ET 200 PRO IP65/67 enclosure, not a DIN rail — the mechanical envelope is 130 mm height, 45 mm width, and 35 mm depth, matching the IP65/67 form factor for on-machine or remote-stand deployment.
Input Thresholds and Wiring Constraints
Signal '0' is defined as -3 to +5 V, signal '1' as 13 to 30 V, with a typical current draw of 7 mA per channel at signal '1' — compatible with standard 24 V DC sensors and proximity switches. The module accepts 2-wire sensors with a permissible quiescent current up to 1.5 mA, and provides electronic short-circuit protection per module for the sensor supply to M, plus reverse-polarity protection against destruction when encoder power supply outputs are reversed. Input filter times are fixed (non-parameterizable) at 1.2 ms minimum and 4.8 ms maximum for both 0-to-1 and 1-to-0 transitions — suitable for standard discrete sensing but not for high-speed counting or isochronous mode, which is explicitly not supported.
Power Budget and Diagnostics
Typical power loss is 2.5 W, drawn from the backplane bus (3.3 V DC, max 20 mA) and the supply voltage 1L+ (max 20 mA) — plan the ET 200 PRO segment power budget accordingly. Diagnostics include a group error SF (red) LED, per-channel status indicators (green), readable diagnostic information, and diagnostic alarm capability — the module reports faults to the DP master without requiring additional wiring. Isolation is tested at 707 V DC between channels and the backplane bus, and between the backplane bus and all other circuit components — no channel-to-channel isolation, so all inputs share a common reference.
The module ships with the bus module included; the connection module IO 6ES7194-4..00-0AA0 is ordered separately per the specification.