Schneider Electric Modicon Momentum 170 Series Modules 170INT11000 Interbus Communication Adapter

Technical Dossier

Product Details And Specifications

Schneider Electric Modicon Momentum 170 Series Technical Notes

The Schneider Electric Modicon Momentum 170 Series is a distributed I/O and control platform with a documented installed base across global heavy industry: petrochemical refineries, nuclear power generation facilities, offshore oil & gas platforms, and continuous-process chemical plants. Its modular backplane architecture — separating the I/O base from the communication adapter — enables field-level intelligence distribution without centralizing control logic. Installed node counts in the hundreds of thousands worldwide make the 170 Series one of the most widely maintained legacy automation platforms in active service. Its longevity in safety-critical environments means lifecycle support, spare parts availability, and certified replacements remain operationally critical for plant engineers and maintenance teams globally.

The Evolution of Modicon Momentum 170 Series Architecture

The Modicon Momentum platform was introduced by Schneider Electric (then AEG Schneider Automation / Modicon) in the mid-1990s in response to industry demand for distributed, rack-free I/O systems. The architecture is defined by a two-part physical design: an I/O base module (the 170 ADI / 170 ADO / 170 AAI / 170 AAO families) and a detachable communication adapter (170 ENT, 170 INT, 170 DNT, 170 FNT, 170 PNT families) that mounts directly onto the base via a standardized backplane connector.

Early generations (pre-2000) used proprietary fieldbus protocols — Interbus-S, Modbus Plus, and FIPIO — reflecting the fragmented fieldbus landscape of that era. The 170INT11000 and 170INT11001 Interbus-S adapters were among the first-generation communication modules, designed for integration with Phoenix Contact Interbus-S master controllers at 500 kbps. The introduction of the 170ENT11001 Ethernet TCP/IP adapter marked the platform's transition into modern network topologies, enabling SCADA and MES integration via standard IP infrastructure. Later revisions added enhanced diagnostics, faster scan cycles, and compatibility with Unity Pro / EcoStruxure Machine Expert engineering environments.

The platform entered its end-of-active-development phase circa 2010–2015. Schneider Electric has designated the Modicon M340 and Modicon M580 as the recommended migration paths. Despite this, the 170 Series remains in active production use globally, and sourcing of both current and obsolete variants is a sustained industrial requirement with no near-term decline in demand.

Modicon Momentum 170 Series Full Catalog & Functionalities (SKU List)

Communication Adapters

• 170INT11000: Interbus-S communication adapter, 500 kbps, DIN rail mount, first-generation fieldbus interface for Momentum I/O bases
• 170INT11001: Interbus-S adapter with enhanced onboard diagnostics, LED status indicators, and improved EMC shielding
• 170ENT11001: Ethernet TCP/IP 10/100 Mbps adapter, Modbus TCP protocol, single RJ45 port, web server diagnostics
• 170ENT11002: Ethernet TCP/IP adapter with integrated dual-port switch, supports daisy-chain and star topology wiring
• 170DNT11000: DeviceNet communication adapter, 125/250/500 kbps selectable, Group 2 slave, EDS file supported
• 170FNT11000: FIPIO fieldbus adapter, 1 Mbps, for Telemecanique PL7 Pro and TSX Premium environments
• 170PNT11020: PROFIBUS-DP slave adapter, 12 Mbps max, GSD file configuration, supports DPV0 and DPV1
• 170LNT11000: LON Works network adapter, 78 kbps, for building automation and process integration
• 170MNT11000: Modbus Plus network adapter, 1 Mbps token-passing bus, for legacy Modicon PLC environments

Discrete Input Modules (DI)

• 170ADI34000: 32-channel 24 VDC discrete input base, sink/source compatible, 3 ms input filter
• 170ADI35000: 16-channel 120 VAC discrete input base, optically isolated inputs, 10 ms filter
• 170ADI54050: 16-channel 24 VDC fast discrete input, 0.1 ms filter, for high-speed counting and encoder applications
• 170ADI34050: 32-channel 24 VDC discrete input, extended diagnostics, short-circuit detection per channel

Discrete Output Modules (DO)

• 170ADO34000: 32-channel 24 VDC discrete output base, 0.5 A per channel, source type, electronic protection
• 170ADO35000: 16-channel relay output base, 2 A per channel, Form A (NO) contacts, 250 VAC rated
• 170ADO74000: 16-channel 24 VDC transistor output, 2 A per channel, protected outputs with diagnostics

Analog Input/Output Modules (AI/AO)

• 170AAI03000: 8-channel analog input base, 4–20 mA / 0–10 V selectable, 12-bit resolution, 1 ms conversion time
• 170AAO92000: 4-channel analog output base, 4–20 mA / 0–10 V selectable, 12-bit resolution, short-circuit protected
• 170AAI14000: 4-channel thermocouple/RTD analog input, supports J/K/T/PT100 types, 15-bit resolution

CPU / Processor Adapters

• 170AAH92000: Standalone CPU adapter, 256 KB user memory, Modbus RTU serial port, autonomous ladder logic execution
• 170AAH92001: CPU adapter, 512 KB user memory, Ethernet port, Unity Pro compatible, supports function block and structured text

Sourcing Hard-to-Find & Obsolete Modicon Momentum 170 Series Parts

Multiple product lines within the Modicon Momentum 170 Series have been in end-of-life or limited-availability status since Schneider Electric's formal migration advisories. This creates a sustained sourcing challenge for plant operators who cannot justify full system migration during active production cycles — particularly in industries where control system change management requires multi-year validation and regulatory approval.

Quality Control for the Modicon Momentum 170 Series Range

The Modicon Momentum 170 Series presents specific quality control requirements due to its dual-module architecture. Each I/O base and communication adapter must be tested both independently and in combination, as backplane communication faults can manifest only under active fieldbus traffic conditions. Counterfeit and improperly refurbished units are a documented risk in the secondary market for this series.