OTB1CODM9LP: Advantys OTB CANopen Distributed I/O Module
Engineers maintaining legacy CANopen networks face a critical challenge: sourcing a bus coupler that matches the original I/O count, voltage, and form factor without redesigning the panel. The OTB1CODM9LP from Schneider Electric addresses this need as a compact Advantys OTB distributed I/O slave. It combines 12 digital inputs, 8 digital outputs, and a CANopen SUB-D9 port in a 90 × 55 × 70 mm housing. However, this module is discontinued. For new installations, the TM3BCEIP with TM3 distributed I/O is the verified replacement path.

OTB1CODM9LP Technical Specifications and I/O Architecture
The module operates from a 24 V DC supply (20.4...26.4 V) and consumes 19 W. Its bus current draw is 700 mA at 26.2 V on the supply circuit. The table below summarizes the primary engineering parameters.
| Parameter | Value |
|---|---|
| Digital inputs | 12 (24 Vdc, sink/source, Type 1 per IEC 61131-2) |
| 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 pulse generator |
| Communication | 1× CANopen (SUB-D9), slave |
| Expansion | Up to 7 TM2 expansion modules |
| Protection rating | IP20 |
| Operating temperature | 0...+55 °C |
| Dimensions (H×W×D) | 90 × 55 × 70 mm |
| Weight | 0.195 kg |
Key Engineering Features of the OTB1CODM9LP
- Dual output technology: Two solid-state PNP outputs handle 0.3 A, while six relay outputs manage 2 A.
- High-speed counting: Two 20 kHz counters support fast event capture without external hardware.
- Pulse generation: Two 7 kHz pulse outputs enable simple motion or timing tasks.
- Expansion capability: Up to seven TM2 modules extend I/O count within the same node.
- CANopen connectivity: A SUB-D9 port provides direct slave integration into CANopen networks.
Each specification is verified against the official datasheet. For parameters not listed here, refer to the official datasheet.

Applications and Integration Notes
This module suits distributed control architectures in packaging, material handling, and assembly cells. Because it acts as a CANopen slave, it communicates with a master PLC or controller over the bus. Integration into a CANopen network requires correct node addressing and termination, which engineers must confirm against the network design. When replacing a failed unit, verify that the master's configuration matches the OTB1CODM9LP's I/O mapping. For new designs, note that the TM3BCEIP and TM3 distributed I/O offer a modern alternative. Contact AutoDCSTech with your exact requirements for precise matching.
Lifecycle Status and Replacement Path
The OTB1CODM9LP is discontinued. Schneider Electric identifies the TM3BCEIP with TM3 distributed I/O as the replacement. Engineers should plan a migration that accounts for differences in mounting, wiring, and network protocol. Because the replacement uses a different platform, a direct drop-in swap is not possible. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | OTB1CODM9LP |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | France |
