Schneider 170 BDI 356 00 Interbus–S TIO Input Module 170BDI35600 TSX TIO
The 170 BDI 356 00 is a digital input module designed to interface between field-level sensors and a higher-level control system via the Interbus-S fieldbus network. It acts as a remote I/O station, collecting data from on/off devices and transmitting it to the central PLC.
Key Features & Specifications
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Manufacturer: Schneider Electric (under the Telemecanique / Modicon brands)
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Product Family: Modicon Momentum
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Module Type: Digital Input (DI)
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Number of Channels: 16
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Input Type: Sinking (the module provides the voltage, the sensor connects to ground)
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Voltage Level: 24 VDC
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Electrical Isolation: 500 VAC between the field side (inputs) and the bus side (Interbus-S)
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Fieldbus Communication: Interbus-S
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This is a serial fieldbus system known for its high speed and deterministic data transmission.
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Physical Form Factor: A single-width Momentum TIO (Terminal I/O Block). This is a compact, modular block that snaps onto a standard DIN rail.
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Diagnostic Indicators:
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Power (PWR): Indicates module is receiving power.
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Communication (COM): Indicates active and correct data exchange on the Interbus-S network.
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I/O Status (per channel): Individual LEDs for each of the 16 inputs show the real-time state (ON/OFF) of the connected sensor.
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Functionality and Application
The primary function of this module is to read the state of discrete (on/off) field devices and make that data available to a central programmable logic controller (PLC) over the Interbus-S network.
Typical devices connected to this module include:
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Push Buttons
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Limit Switches
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Proximity Sensors (Inductive/Capacitive)
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Photoelectric Sensors
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Selector Switches
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Relay Contacts
System Integration
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PLC Compatibility: It is designed to work with Schneider Electric PLCs that support the Interbus-S master interface, such as the Modicon Quantum or Modicon Premium platforms with an appropriate Interbus-S master module.
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Network Role: It acts as a slave device on the Interbus-S network. Multiple I/O modules can be connected in a series (daisy-chained) to form a single loop.
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TSX TIO SEO: The acronym “TSX TIO SEO” in your query confirms this module’s place within the broader TSX system architecture as a Terminal I/O (TIO) module.
Why is this Module Significant?
While Interbus-S is now considered a legacy fieldbus, this module was a key component in many industrial automation systems from the 1990s and 2000s. It offered a reliable, fast, and robust solution for distributed I/O.
Modern Context:
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Legacy Systems: This module is most commonly found in existing, operational factories and machinery.
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Replacement & Spare Part: Its primary market today is for maintenance, repair, and operations (MRO) to keep legacy systems running.
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Migration: For new projects, Schneider Electric typically recommends migrating to modern, Ethernet-based networks like EtherNet/IP or Modbus TCP, using contemporary Momentum ePAC controllers or other Modicon platforms.
