Description
📌 Product Overview
The GE/Emerson SLN042 (Part Number: IC086SLN042-A) is an industrial-grade, 6-port unmanaged Ethernet switch engineered for the PACSystems family of distributed control systems. Originally developed under the GE Fanuc brand (now managed by Emerson Automation Solutions), this switch is tailored to establish highly reliable Ethernet Local Area Networks (LANs) within harsh plant process areas, replacing complex proprietary networks with standardized, high-speed Ethernet infrastructure.
📋 Technical Specifications Datasheet
- Brand: GE Fanuc / Emerson Automation Solutions
- Model/Part Number: SLN042 / IC086SLN042-A
- Series: PACSystems Networking Modules
- Product Name: 6-Port Unmanaged Industrial Ethernet Switch
- Total Port Count: 6 Ports
- Copper Connectivity: 4x 10/100Base-T(X) RJ45 Ethernet ports
- Fiber Optic Connectivity: 2x 100Base-FX fiber optic connections
- Switch Type: Unmanaged (Plug-and-play, no configuration required)
- Environmental Protection: Hardened industrial design built to withstand extreme temperatures, high humidity, and heavy mechanical vibration.
⚙️ Operating Norms and Usage
- Environment: Designed exclusively for demanding industrial conditions. Ensure the module is mounted in a proper industrial enclosure (e.g., DIN-rail or panel mount) that matches the plant’s IP/NEMA rating requirements.
- Cabling Practices: Utilize industrial-grade shielded CAT5e/CAT6 cables for the 10/100Base-T(X) ports and ensure proper cleaning and seating of the fiber optic connectors on the 100Base-FX ports to prevent signal degradation.
- Network Resilience: Features fast network recovery technology, which helps minimize downtime during network disruptions, making it ideal for continuous manufacturing and critical control loop environments.
⚡ Power-On / Power-Off Sequence
- Power-On Sequence: Terminate all network connections (both RJ45 and fiber) prior to powering the switch. Energize the 24V DC control power supply and monitor the front-panel LED indicators (Power, Link, and Activity) to confirm all connected nodes are actively communicating.
- Power-Off Sequence: If part of a critical PACSystems architecture, ensure redundant network paths are active or gracefully halt control processes before removing power from the switch to prevent data loss or sudden I/O drops.
📖 Product Usage Instructions
- Because the IC086SLN042-A is an unmanaged switch, there is no need for IP address configuration, VLAN setup, or web-based management. It automatically detects, auto-negotiates speeds, and configures connected industrial devices.
- Regularly inspect both the copper and fiber ports for dust ingress. In high-vibration areas, verify that the RJ45 clips and fiber optic LC/SC connectors remain securely latched.
- Use this module to bridge distant remote I/O drops back to the main PACSystems RX3i/RX7i controllers by leveraging the long-distance capabilities of the two 100Base-FX fiber ports.
❓ Common Questions & Answers Q&A
- Q: Can I configure VLANs or Quality of Service (QoS) on the IC086SLN042-A?
A: No, this is strictly an unmanaged switch. It acts as a transparent, plug-and-play data bridge. If advanced traffic management is required, a managed switch model must be utilized instead.
- Q: Why does this switch include both copper and fiber ports?
A: The mixed connectivity allows the switch to be highly versatile. The copper ports handle localized connections to nearby PLCs, HMIs, or I/O racks, while the fiber ports safely route data across long distances or high-voltage plant areas immune to electromagnetic interference (EMI).
Recommended Alternative Series & Models
- Emerson / GE PACSystems Ethernet Module: IC695ETM001 (RX3i Ethernet Module)
- Emerson / GE PACSystems CPU: IC695CPE330 (RX3i Advanced Controller)
- GE Genius Bus Controller: IC687BEM713
- GE Mark VIe Network Switch: IS420ESWBH3A (Industrial Ethernet Switch)
- GE Multilin Communication Module: Multilin Hardened Ethernet Switches (MultiNet)


