Comnet FDX72M1SHR Universal Data Self Healing Ring
- Meets EIA RS232 and RS422/RS485 (2 or 4-wire) specifications (Simplex or Duplex Operation)
- Two Data Channel Capability: One full duplex or two half-duplex channels
- Only one optical fiber required between units for Fault Tolerant/Self-Healing Ring Operation
- Full data re-clocking and regeneration: no limit to the number of transceiver units used within the network
- Supports supervised multiple master architecture for unparalleled network reliability

The ComNetâ„¢ FDX72M1SHR Self-Healing Ring Transceiver unit is a fully-digital modem tailored for implementing reliable RS232, RS422 or RS485 2 or 4-wire data communications networks. It supports either one full-duplex or two half-duplex data channels, making it versatile for various applications. The innovative design allows for data re-clocking and regeneration, enabling an extensive number of transceiver/controller units within the network. Ideal for unconditioned, out-of-plant or roadside installations, it only requires one optical fiber for a self-healing ring operation, ensuring minimal downtime and maximum efficiency. The user-friendly plug-and-play design simplifies installation, eliminating the need for electrical or optical adjustments.
ComNet FDX72M1SHR Key Features
- Compatibility: Meets EIA RS232 and RS422/RS485 (2 or 4-wire) specifications for simplex or duplex operation - Ensures compatibility with various data communication systems.
- Data Channel Flexibility: Two data channel capability: one full duplex or two half-duplex channels - Provides flexibility for different data transmission needs.
- Installation Efficiency: Only one optical fiber required between units for Fault Tolerant/Self-Healing Ring Operation - Reduces installation complexity and costs.
- Scalability: Full data re-clocking and regeneration - Allows unlimited transceiver units within the network, enhancing scalability.
- Reliability: Supports supervised multiple master architecture - Unmatched reliability for critical network applications.
- Troubleshooting Aid: Remote Fault Indication - Alerts users to fiber breaks or power loss, facilitating quick troubleshooting.
- Status Monitoring: LED status indicators - Quickly shows critical operating parameters and issues, improving maintenance efficiency.
- Protocol Conversion: Serial data protocol conversion capability - Increases versatility between nodes (consult factory for details).
- Compliance: Compliance with NEMA TS-1/TS-2 and Caltrans traffic signal standards - Guarantees reliability in transportation applications.
- Robust Design: Designed for extreme reliability - Suited for harsh, unconditioned roadside environments.
- Interoperability: NTCIP compatibility - Ensures interoperability with traffic management systems.
- Protection: Voltage transient protection - Safeguards against power surges, enhancing longevity.
- Optical Dynamics: Wide optical dynamic range - Eliminates the need for optical attenuators.
- Maintenance Convenience: Hot-swappable rack modules - Allows easy maintenance without system downtime.
- Configuration Options: ComFit package - Interchangeable between stand-alone or rack mount configurations.
- Versatile Installation: DIN-Rail mountable - Offers versatile installation options with additional adaptor plates.
Detailed Specifications for ComNet FDX72M1SHR
| Feature | Details |
| Data Protocols | RS232, RS422/RS485 (2 or 4-wire) |
| Data Channel Capability | One full duplex or two half-duplex |
| Operational Mode | Fault Tolerant/Self-Healing Ring using only one optical fiber |
| Data Handling | Full re-clocking and regeneration |
| Network Architecture | Supervised multiple master |
| Fault Indication | Remote indication for fiber breaks and power loss |
| LED Indicators | Displays critical operating status |
| Environmental Compliance | NEMA TS-1/TS-2, Caltrans Specification |
| Compatibility | NTCIP compliant |
| Protection Features | Voltage transient protection on I/O lines |
| Optical Range | Wide range, no optical attenuators needed |
| Module Type | Hot-swappable rack modules |
| Mounting Options | Stand-alone, rack mount, or DIN-Rail |
| Temperature Range | Ambient operating conditions (unconditioned environments) |



