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The WESTINGHOUSE 5X00499G01 is a Legacy Network Gateway Module for the WDPF II (Westinghouse Distributed Processing Family) distributed control system, designed to bridge proprietary peer-to-peer networks with early Ethernet architectures in power and industrial facilities. This module enabled hybrid communication between WDPF II control processors and supervisory systems (e.g., plant MIS or corporate SCADA) using TCP/IP protocols while maintaining deterministic performance for critical control loops. The 5X00499G01 translated Westinghouse’s real-time data highway into IEEE 802.3 frames with <150ms>
As a transitional technology in Emerson’s legacy portfolio, the WESTINGHOUSE 5X00499G01 resolved Y2K-era integration challenges – connecting CONDUCTOR® workstations to early Windows NT servers for production reporting. Its dual-ported architecture allowed simultaneous highway monitoring and Ethernet data forwarding, while hardware-based protocol filtering prevented control network flooding. Radiation-hardened variants (5X00499G01-N) facilitated non-safety data extraction in nuclear facilities, complying with IEEE 323 seismic and EMI requirements.
5X00499G01 WESTINGHOUSE
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 5X00499G01 |
| Manufacturer | Westinghouse (Emerson Process Management) |
| Product Type | Network Gateway |
| System Platform | WDPF II DCS |
| Data Highway Interface | Dual Redundant Token Rings (2 Mbps) |
| Ethernet Ports | 2 × 10BASE-T (RJ45) |
| Supported Protocols | TCP/IP, UDP, Westinghouse Peer-to-Peer |
| Address Translation | 1:1 mapping of DCS points to IP tags |
| Isolation | 2kV AC (Data Highway to Ethernet) |
| Latency | 50–150ms (point-to-point) |
| Data Throughput | 500 tags/second |
| Processor | 32-bit RISC + Network Coprocessor |
| Power Supply | 100-240V AC ±10% (47-63Hz) |
| Operating Temperature | -40°C to 70°C (-40°F to 158°F) |
| Certifications | UL 508, FCC Part 15, IEEE 323 (Nuclear) |
| Enclosure | NEMA 12 (IP54) |
Main Features and Advantages
Deterministic Hybrid Operation: The WESTINGHOUSE 5X00499G01 prioritized control traffic over supervisory data using hardware-based Quality of Service (QoS) queues. Its dual independent buffers prevented Ethernet broadcast storms from affecting critical turbine control signals. Unlike software gateways, this module maintained <1ms>
Legacy Integration: The gateway’s “transparent mode” allowed direct mapping of WDPF II database points to Modbus/TCP registers – enabling integration with third-party HMIs without custom coding. Radiation-hardened variants used optical isolation and ceramic circuit boards to survive 10⁶ rad gamma doses in nuclear installations. The 5X00499G01’s patented data compression reduced bandwidth usage by 60% for historical trend extraction.
Application Field
The WESTINGHOUSE 5X00499G01 enabled critical integrations in:
Power Plants: Connecting turbine vibration data to corporate PI Historians
Refineries: Bridging DCS safety interlocks to SAP PM systems
Nuclear Facilities: Extracting non-safety data (5X00499G01-N) to emergency operations centers
Water Utilities: Integrating regional SCADA into central control rooms
Paper Mills: Linking quality control analyzers to LIMS databases
During the 1999 Y2K transition, these modules maintained control network integrity while allowing legacy systems to exchange data with patched servers.
5X00499G01 WESTINGHOUSE
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