Product Overview

The IS420ESWBH3A is an IONet switch board used in GE Mark VIe control system networking to interconnect controllers, I/O packs, and related nodes over industrial Ethernet. It provides multi-port copper Ethernet connectivity for cabinet-based network topologies commonly used in turbine control and balance-of-plant automation. The module is applied where stable deterministic communications and controlled handling of network traffic are required within a Mark VIe architecture.

This switch board is designed for copper-only implementations and is commonly selected when fiber uplinks are not needed. Its internal buffering and traffic management functions help maintain network performance during bursts of multicast and broadcast traffic typical of real-time control networks.

Hardware Parameters

• Copper Ethernet ports: 16 x 10/100Base-TX (RJ45)

• Fiber interface: Not included on this model

• Network role: IONet switch board for Mark VIe system Ethernet distribution

• Traffic handling: Buffered forwarding for multicast and broadcast frames to reduce packet loss during peak load

• Port buffering: Dedicated or partitioned buffer resources to queue simultaneous incoming streams

• Physical form: Industrial board/module format for control cabinet installation

• Typical deployment: Mark VIe I/O network segments connecting control and I/O assemblies

Industrial Applications

• Mark VIe IONet connectivity between controller hardware and distributed I/O packs

• Turbine control cabinets for gas, steam, and wind turbine automation networks

• Control-network builds requiring multiple copper drops within a single cabinet or skid

• Replacement/spares for installed Mark VIe IONet switch board nodes

• Systems where traffic bursts (multicast/broadcast) must be buffered to maintain stable communications