Overview
Manuals
Input Voltage Levels
Two-Wire Sensor Limits
Input Status LEDs
Features:
- Eight discrete inputs: Acquires 24 V DC Type 1 input signals and maps the channels into one input byte.
- Defined signal response: Both rising and falling edges have a 2–4.5 ms delay that is not parameterizable.
- Channel status visibility: A green LED is provided for each input; the module does not provide diagnostic functions.
The module provides standard discrete-state acquisition in an ET 200S station. Check the field device's active voltage and off-state leakage against the published thresholds, especially when using two-wire electronic sensors instead of mechanical contacts.
When replacing 6ES7131-4BF00-0AA0, preserve the terminal assignment and controller input mapping, and test each channel using the approved commissioning procedure. Similar digital modules may have different input characteristics, filtering or diagnostics; neither channel count nor physical width alone proves equivalence.
Siemens lists 6ES7131-4BF00-0AA0 under product cancellation; current documentation identifies it as a spare part. Moore Automated can support exact-model replacement sourcing subject to condition and availability confirmation.
Siemens 6ES7131-4BF00-0AA0 product data sheet Manual(Datasheets), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Defined logic thresholds
Logic zero is specified from -30 to +5 V and logic one from +15 to +30 V. Typical input current at logic one is 5 mA. Check the actual sensor output and common reference; the intermediate voltage region must not be treated as a guaranteed logic state.
Two-wire sensor limit
Two-wire sensors are supported with a maximum quiescent current of 1.5 mA. The module has no sensor-supply outputs. Follow the terminal-module assignment and supply arrangement in the Siemens system instructions.
Indication is not diagnosis
A green LED indicates each input's status. Siemens specifies no diagnostic functions for this module, so field-wiring checks and controller observations remain necessary. This standard input is not an automatic replacement for a fail-safe input module.
