Product Overview
The OTB1E0DM9LP is a Schneider Electric distributed I/O module from the Advantys OTB series. It functions as a bus coupler and I/O slave on an Ethernet network, not as a programmable controller. This module brings 20 built-in I/O points to your control architecture and supports up to seven TM2 expansion modules, giving you a compact yet scalable remote I/O station.
Schneider Electric designed the Advantys OTB platform for machine builders and system integrators who need flexible I/O distribution close to field devices. The OTB1E0DM9LP fits that role with a 24 V DC supply, an RJ45 Ethernet port, and support for Modbus TCP and Ethernet TCP/IP.
Key Technical Specifications
The module provides 12 digital inputs rated 24 V DC, sink/source, Type 1 per IEC 61131-2. These inputs accept standard industrial sensor signals without external conditioning. For outputs, you get 8 digital channels: 2 solid-state PNP outputs at 0.3 A and 6 relay outputs at 2 A. That mix lets you drive both fast DC loads and higher-current AC or DC circuits from one module.
Two high-speed counters run at 20 kHz, and two pulse generators operate at 7 kHz. These features support simple positioning, counting, and pulse-train applications without a separate function module.
| Specification | Value |
|---|---|
| Digital Inputs | 12 (24 V DC, sink/source, Type 1) |
| Digital Outputs | 8 (2 solid-state PNP 0.3 A + 6 relay 2 A) |
| High-Speed Counters | 2 × 20 kHz |
| Pulse Outputs | 2 × 7 kHz |
| Ethernet Port | 1 × RJ45 (10/100 Mbit/s) |
| Protocols | Modbus TCP, Ethernet TCP/IP, web server |
| Supply Voltage | 24 V DC (20.4…26.4 V) |
| Power Consumption | 19 W |
| Operating Temperature | 0…+55 °C |
| Protection Rating | IP20 |
| Dimensions (H×W×D) | 90 × 55 × 70 mm |
| Weight | 0.195 kg |
Why Buyers Choose This Module
The OTB1E0DM9LP suits OEMs and maintenance teams that already run Advantys OTB networks. Its Ethernet interface supports Modbus TCP and Ethernet TCP/IP, plus a built-in web server for basic diagnostics. Transparent Ready Class A10 compatibility means it fits into Schneider’s transparent communication architecture.
With 12 inputs and 8 outputs on board, you can wire a small machine cell directly to the module. Need more points? Add up to seven TM2 expansion modules. This scalability protects your initial investment and lets you grow the station as your machine evolves.
Replacement and Upgrade Guide
Schneider Electric has discontinued the Advantys OTB platform. The recommended replacement path is the TM3BCEIP bus coupler paired with TM3 distributed I/O modules. If you are evaluating the OTB1E0DM9LP today, you have two practical options.
First, source remaining stock for existing installations. This keeps your spare parts strategy simple and avoids re-engineering. Second, plan a migration to TM3 hardware for new projects. The TM3 line offers a modern Ethernet-based I/O platform with a similar distributed architecture.
Before ordering, confirm your network protocol requirements. This NIM variant supports EtherNet/IP and Modbus TCP. Check that your controller or PLC can communicate over one of these protocols. Also verify your panel space: the module measures 90 × 55 × 70 mm and weighs 0.195 kg.
Installation and Setup Notes
Mount the module inside a control cabinet that maintains the 0…+55 °C operating range. Keep humidity between 10% and 95%, non-condensing. The IP20 rating means the module needs protection from dust and water ingress.
Connect the 24 V DC supply within the 20.4…26.4 V range. The module draws 19 W and a bus current of 700 mA at 26.2 V on the supply circuit. Size your power supply accordingly, especially if you add TM2 expansion modules.
For network setup, use the RJ45 port for Modbus TCP or Ethernet TCP/IP. The built-in web server helps with initial configuration and status checks. Follow Schneider’s installation manual for wiring details and grounding practices.
Maintenance and Reliability
Inspect the module periodically for loose connections, dust buildup, and overheating. Relay outputs are electromechanical and may wear over time, so monitor their switching cycles in high-demand applications. The solid-state outputs have no moving parts and generally require less attention.
Because the product is discontinued, spare-part availability will decline over time. Build a small stock of units for critical machines. For long-term reliability, plan your migration to TM3 hardware before spares become scarce.
Frequently Asked Questions
Is the OTB1E0DM9LP a PLC?
No. It is a bus coupler and distributed I/O slave. It needs a network master, such as a PLC, to control its inputs and outputs.
What protocols does this module support?
It supports Modbus TCP and Ethernet TCP/IP over its RJ45 port. It also includes a web server and Transparent Ready Class A10 compatibility.
Can I still buy this module?
Schneider Electric has discontinued the Advantys OTB series. Contact SpareTechPLC to check remaining stock and discuss the TM3BCEIP + TM3 replacement path.
How many expansion modules can I add?
You can connect up to seven TM2 expansion modules to increase your I/O count.
What is the replacement for this module?
Schneider recommends the TM3BCEIP bus coupler with TM3 distributed I/O modules as the migration path.
