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The EM203 is a compact, high-efficiency serial-to-Ethernet communication module designed for seamless integration of legacy UART-based devices into modern Ethernet networks within the Bachmann M1 ecosystem. Acting as a robust UART-to-TCP/IP bridge, it...
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The EM203 is a compact, high-efficiency serial-to-Ethernet communication module designed for seamless integration of legacy UART-based devices into modern Ethernet networks within the Bachmann M1 ecosystem. Acting as a robust UART-to-TCP/IP bridge, it enables remote access, monitoring, and data exchange for serial peripherals without redesigning existing field hardware.
Optimized for industrial environments, the EM203 supports multiple duplex and flow-control modes, ensuring reliable data transmission even in high-traffic or electrically noisy automation systems. Its ultra-small footprint makes it particularly suitable for space-constrained installations and embedded communication tasks.
| Specification | Details |
|---|---|
| Model Identification | EM203 |
| Manufacturer | Bachmann Electronic GmbH |
| Network Interface | 10/100Base-T Ethernet |
| Ethernet Connector | RJ203 front-end |
| Serial Interface | UART (full- and half-duplex) |
| Maximum Baud Rate | 115,200 bps |
| Data Bits | 7 or 8 bits |
| Parity Options | None, Even, Odd, Mark, Space |
| Flow Control | RTS/CTS, direction control for half-duplex |
| Power Consumption | 220 mA @ 5 VDC |
| Diagnostic Indicators | 4 LEDs (Status, Link, Speed, Activity) |
| Module Dimensions | 30.1 × 18.1 × 5.5 mm |
| External Signaling | Control outputs for remote status LEDs |
The EM203 is ideally suited for modernization and retrofit projects where serial-based devices—such as barcode scanners, legacy sensors, weighing systems, or older PLCs—must be connected to an Ethernet-based control or SCADA network.
By encapsulating serial data into standard TCP/IP packets, the EM203 enables:
Centralized monitoring over long distances
Remote configuration and diagnostics
Integration with IT and IIoT infrastructures
Its low power consumption and minimal heat generation allow installation in compact enclosures without additional cooling.
Q: Does the EM203 support 100 Mbps Ethernet operation?
A: Yes. The EM203 automatically detects network speed and provides a dedicated 100 Mb LED indicator for confirmation.
Q: Can the EM203 be used for RS485 communication?
A: The EM203 provides a UART interface with direction control. An external RS485 transceiver may be required to meet physical-layer RS485 signaling requirements, depending on the application.
