Description
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Alstom |
| Model | IR139-1 |
| Alstom Code | C0200650 |
| Product Type | Modbus Communication / Link Module |
| Host Controller | CE2000 |
| Communication Protocol | Modbus |
| Number of Channels | 4 |
| Serial Interfaces | RS-232 / RS-485 |
| Connection Mode | Point-to-point or multidrop bus |
| CE2000 Role | Modbus Master |
| Associated Systems | C370 / C80-75 |
| Hardware Revision | A |
| Reported Firmware | V00.04 / VA01.00 |
| Approx. Weight | 0.40 kg |
| Approx. Dimensions | 26.5 × 2.6 × 26.5 cm |
The strongest available technical reference identifies IR139-1 (C0200650) specifically as a 4-channel Modbus link module for the CE2000 controller, rather than the unrelated CPU, turbine-trip, or MiCOM protection descriptions found on some secondary sites.
Product Introduction
The Alstom IR139-1 is a dedicated communication module for the CE2000 controller. Its primary purpose is to provide serial Modbus communication between the CE2000 and external equipment. The documented implementation provides four RS-232/RS-485 channels, allowing each channel to operate with a single point-to-point slave or with multiple devices on a bus connection.
The Alstom IR139-1 C0200650 is particularly relevant in legacy CE2000 installations where Modbus is used to exchange operating data between the controller and associated equipment. The documented architecture identifies the as the Modbus master when communicating with systems such as the C370 or C80-75 through the IR139-1.
This is an important distinction because several current reseller pages incorrectly classify IR139-1 as a generic industrial motherboard, turbine emergency-trip relay, or MiCOM P40 protection relay. Those descriptions conflict with the specific /Modbus documentation.
IR139-1
Main Features & Field Considerations
Four serial communication channels
The defining feature of the is its four-channel serial communication capability. RS-232 and RS-485 interfaces allow the module to support different physical communication arrangements within the architecture.
Modbus communication
The module is designed specifically for Modbus data exchange. It is not simply a generic serial interface card; the documented implementation defines the controller as the Modbus master.
Point-to-point or bus operation
Each communication channel can be connected to one slave device or multiple slaves through a bus arrangement, depending on the physical interface and system configuration.
Legacy-system compatibility
The should be treated as specialized hardware. A modern RS-485/Modbus interface cannot automatically replace it because the original module may handle system-specific electrical interfaces, addressing, connectors, and controller integration.
Replacement Checks
Before replacing an , verify:
- Exact model:
- Alstom code: C0200650
- Hardware revision
- Firmware version
- controller type
- Number of active communication channels
- RS-232 versus RS-485 wiring
- Modbus slave addresses
- Baud rate, parity, and stop-bit settings
- Point-to-point versus multidrop topology
- Cable shielding and termination
- Existing communication configuration
For RS-485 installations, inspect the complete bus before condemning the module. Incorrect termination, polarity, duplicate slave addresses, and poor shielding can produce symptoms that look like a failed communication card.
Procurement Note
For procurement, use the complete identification:
Alstom — C0200650
The most defensible technical classification is 4-channel Modbus communication/link module with RS-232/RS-485 interfaces.
I would not publish claims of Intel processors, 8 GB DDR4, 3G/Wi-Fi, IEC 61850, or turbine emergency-trip relay functions for this part. Those specifications appear in conflicting secondary listings and are not supported by the stronger documentation.
For a replacement in an operating system, match the /C0200650 revision, firmware, serial interface configuration, and Modbus parameters rather than treating the board as a generic communication module.
