RADISYS EXM-29 Dual Port RS422

( Brand: Radisys ), ( Manufacturer Part Number: EXM-29 ), ( Country Of Origin: United States ), ( Item Length: 12 )

Review RADISYS Dual Port Rs422

The **Radisys EXM-29 Dual-Port RS-422 Modem** is a robust, high-performance industrial communication device designed to bridge legacy serial networks with modern Ethernet infrastructure, ensuring seamless data transmission in demanding environments. Engineered for reliability and versatility, this compact yet powerful modem supports two independent RS-422 ports, each capable of operating at speeds up to **115.2 Kbps**, making it ideal for applications requiring dual-channel redundancy, failover capabilities, or simultaneous communication with multiple devices. Built with enterprise-grade hardware, the EXM-29 features **full-duplex communication**, ensuring efficient bidirectional data flow without signal interference, while its **galvanic isolation** between ports and Ethernet interface enhances protection against voltage spikes, noise, and ground loops critical for maintaining data integrity in harsh industrial settings.

The modem s **Ethernet interface** (10/100 Mbps) enables seamless integration with IP networks, allowing for remote monitoring, diagnostics, and management via standard protocols such as **TCP/IP, UDP, and ICMP**, while its **DHCP client/server support** simplifies network configuration. With **VLAN tagging** and **QoS (Quality of Service) prioritization**, the EXM-29 ensures that critical serial traffic is prioritized over less time-sensitive data, optimizing performance in multi-device deployments. Security is a cornerstone of its design, offering **SSH, HTTPS, and SNMPv3 encryption** to safeguard communications, along with **firewall and access control lists (ACLs)** to restrict unauthorized access. Additionally, the device supports **PPPoE, PPTP, and L2TP** for advanced tunneling and VPN connectivity, expanding its utility in secure remote access scenarios.

The EXM-29 is built to endure extreme operational conditions, with a **wide operating temperature range (-40 C to 75 C)** and **extended voltage input (10V to 60V DC)**, making it suitable for deployment in industrial plants, transportation systems, oil and gas facilities, and other environments where environmental resilience is paramount. Its **compact, rugged enclosure** ensures durability in vibration-prone or dusty settings, while **LED indicators** provide real-time status monitoring for port activity, link integrity, and error conditions. For enhanced manageability, the modem includes a **web-based configuration interface**, **CLI (Command Line Interface)**, and **SNMP traps**, allowing administrators to remotely configure, troubleshoot, and optimize performance with ease. Whether used for **SCADA systems, industrial automation, telemetry, or legacy device migration**, the Radisys EXM-29 delivers a dependable, high-speed bridge between serial and Ethernet networks, ensuring seamless communication in even the most challenging applications.

**Pros and Cons of buying a Radisys EXM-29 (Dual-Port RS-422 Module)**

1. **Dual-Port Design** Provides two independent RS-422 interfaces, allowing for redundancy or simultaneous communication with two different devices or networks. This is useful in industrial or telecom applications where reliability is critical.

2. **High Performance and Low Latency** Radisys modules are known for their high-speed data processing capabilities, making them suitable for real-time applications such as telecom switching, network aggregation, or industrial automation.

3. **Compatibility with Radisys Platforms** If you already have Radisys hardware (e.g., routers, switches, or telecom equipment), this module integrates seamlessly, reducing compatibility issues and simplifying system expansion.

4. **Reliability and Durability** Radisys products are engineered for rugged environments, often used in telecom, military, or industrial settings where stability is essential. The RS-422 interface itself is robust against noise and long-distance communication.

5. **Scalability** The dual-port design allows for future-proofing by accommodating additional serial connections without requiring a complete system overhaul.

6. **Support for Legacy Systems** RS-422 is a well-established standard, making this module a practical choice for interfacing with older equipment or systems that do not support modern protocols like Ethernet or USB.

7. **Potential Cost Efficiency** If you need two serial ports and already have Radisys infrastructure, purchasing this module may be more cost-effective than buying separate single-port solutions or adapting existing hardware.

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1. **Limited Modern Protocol Support** RS-422 is a legacy serial standard. If your application requires high-speed data transfer, modern protocols (e.g., Ethernet, USB, or fiber optics), or advanced features like encryption, this module may not be the best choice.

2. **Higher Complexity in Integration** Unlike plug-and-play USB or Ethernet modules, RS-422 requires careful wiring, termination, and potentially custom firmware or drivers, which may increase development time and technical expertise demands.

3. **Physical Constraints** RS-422 uses DB-9 or DB-25 connectors, which can be bulkier and less flexible than modern interfaces. Long cable runs may require careful shielding to avoid signal degradation.

4. **Deprecation Risk** While RS-422 is still widely used, its relevance is declining in favor of digital interfaces. Future-proofing may require additional investments to migrate to newer standards.

5. **Limited Availability of Newer Radisys Models** Radisys has shifted focus toward software-defined networking (SDN) and cloud-based solutions. Newer models may not be as actively supported, which could affect long-term availability of spare parts or updates.

6. **Potential for Higher Cost per Port** Compared to modern multi-port USB or Ethernet adapters, purchasing a dual-port RS-422 module may be more expensive per interface, especially if you only need one or two ports.

7. **No Built-in Diagnostics or Advanced Features** Unlike some modern interfaces, RS-422 modules typically lack built-in error logging, auto-negotiation, or advanced monitoring tools, which could complicate troubleshooting.

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The Radisys EXM-29 (Dual-Port RS-422) is a **strong choice for applications requiring two robust, legacy serial interfaces in a Radisys-compatible environment**. It excels in telecom, industrial automation, or legacy system integrations where RS-422 s reliability and dual-port capability are critical. However, if your project involves modern data protocols, high-speed requirements, or scalability beyond serial interfaces, alternative solutions (e.g., Ethernet adapters, USB-to-serial converters, or FPGA-based modules) may be more suitable.

- You are working within a Radisys ecosystem and need two RS-422 ports for redundancy or parallel communication.

- Your application relies on legacy equipment or requires long-distance serial communication where RS-422 s noise immunity is advantageous.

- Cost efficiency is a priority, and you can justify the investment in a legacy standard for your specific use case.

- Your project requires modern interfaces (Ethernet, USB, or fiber) or high-speed data transfer.

- You lack the technical expertise to handle RS-422 wiring, termination, or custom integration.

- Future-proofing is a priority, and you anticipate migrating to newer protocols within the next few years.

- You can find a more cost-effective or flexible alternative (e.g., a single-port RS-422 module or a multi-port USB-to-serial adapter).

For most **new or future-focused projects**, consider evaluating modern alternatives before committing to an RS-422 solution. However, for **telecom, industrial, or legacy system applications**, the EXM-29 remains a reliable and well-supported option.

Details:

Second, the EXM-29 does not have capability of sharing interrupts across multiple boards. Are not included with this equipment unless pictured and/or listed in the above. Fast and hassle-free. However, interrupt sharing between ports on the same board is available.

RadiSys EXM-29 Dual Port RS422:: The provides two RS-422/RS-485 serial ports. First, the EXM-29 is configured via programmable registers on board, instead of dip switches. It is software compatible with the ICS FASTCOMM/422 dual port board, save for two exceptions.

part #: exm29 prices

• $150.00-$369.99

specifications pcbemdev:

• brand: Radisys
• mpn: Exm-29
• country of origin: United States
• item length: 12

offer pcbemdev:

• quantity: 5
• availability: In Stock
• started: April 9, 2026
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