Product Overview

The Allen-Bradley 1783-SFP10GLRE is a 10 Gigabit Ethernet long-reach (LR) optical transceiver for compatible Stratix industrial Ethernet switches. It uses a singlemode fiber interface with dual LC connectors and operates at a nominal wavelength of 1310 nm. With a specified transmission distance of up to 10 km, it supports high-speed optical connections between industrial network switches located in separate control rooms, production buildings, or distributed process areas.

In a large manufacturing facility, network traffic may need to move between a central control room and remote production lines without relying on copper Ethernet cabling. The 1783-SFP10GLRE can provide the optical connection between compatible Stratix switches, carrying traffic for PLCs, HMIs, industrial computers, and supervisory systems over a singlemode fiber backbone.

Its 10 Gbps capacity makes this module particularly relevant to network links aggregating traffic from multiple industrial Ethernet segments. For example, a switch serving several machine cells may forward their combined traffic through a 10G fiber uplink to a central network switch. The transceiver supplies the optical interface, while the switches handle traffic forwarding, VLAN configuration, and other network functions.

The 1783-SFP10GLRE should not be confused with the 1783-SFP10GSRI, which uses multimode fiber for shorter-distance 10 Gigabit connections. The LR model uses singlemode fiber and supports a specified reach of up to 10 km. Before installation, engineers should confirm the switch’s SFP compatibility, the optical characteristics of the remote transceiver, and the fiber route’s total loss.

Technical Specifications

Product Features

• 10 Gbps optical connectivity: Supports high-bandwidth Ethernet links between compatible industrial switches.
• Singlemode fiber transmission: Suitable for longer cable routes than typical multimode 10G links.
• 1310 nm operating wavelength: Matches the specified 10GBASE-LR optical interface.
• Dual LC connectors: Connects to compatible duplex singlemode fiber infrastructure.
• Up to 10 km reach: Supports long-distance connections within the applicable optical budget.
• Digital optical monitoring: Supports optical diagnostics through compatible switch management interfaces.
• Industrial network integration: Connects supported Stratix switches to high-speed Ethernet backbones.

Working Principle

The 1783-SFP10GLRE converts electrical data from the switch’s SFP interface into optical signals for transmission over singlemode fiber. At the receiving end, a compatible optical transceiver converts the incoming light signals back into electrical data for the remote switch.

A typical connection follows this path:

Local Stratix Switch → 1783-SFP10GLRE → Singlemode Fiber → Compatible 10G LR Transceiver → Remote Stratix Switch

When the local switch forwards network traffic, the transceiver encodes the data into optical signals at 1310 nm. The fiber carries those signals to the remote transceiver, which recovers the data and passes it to the receiving switch. The switch fabric then forwards traffic to the appropriate network ports.

The 10 Gbps link capacity is useful where several industrial devices share an uplink or where applications generate substantial network traffic. However, the actual throughput of an end-to-end connection also depends on switch capabilities, network configuration, traffic load, and the equipment connected to the link.

Fiber quality directly affects link performance. Connector contamination, excessive insertion loss, damaged cable sections, or an incorrect transmit-to-receive connection can prevent the link from establishing or cause intermittent communication. The optical power budget must account for the complete route, including patch panels, connectors, and splices.

The digital optical monitoring capability can assist troubleshooting by exposing supported optical diagnostics through the switch’s management interface. When a link fails, these readings can help identify whether the received optical power is outside the expected range, although they do not replace inspection of the physical fiber path.

Role in a Stratix Industrial Ethernet Network

The 1783-SFP10GLRE provides the physical 10 Gigabit optical interface between compatible switches. It is typically used on a backbone or uplink where network traffic from multiple industrial devices must travel over a singlemode fiber connection.

Industrial Devices → Access Switch → 10G LR Optical Link → Core or Distribution Switch → Plant Network

Industrial Applications

Installation and Maintenance

1. Verify the model reference: Confirm 1783-SFP10GLRE and ensure the required link speed is 10 Gbps.
2. Check switch compatibility: Verify that the intended Stratix switch supports this SFP model and its required firmware configuration.
3. Confirm the remote transceiver: Use a compatible 10GBASE-LR transceiver with matching optical characteristics at the opposite end.
4. Verify the fiber specification: Confirm that the installed route uses compatible G.652 singlemode fiber.
5. Assess the optical budget: Account for fiber attenuation, connector loss, splices, patch panels, and other components along the route.
6. Inspect the LC connectors: Check connector condition and cleanliness before mating the optical interfaces.
7. Observe laser safety: Never look directly into a fiber end or optical transceiver port. Follow the applicable optical equipment handling procedures.
8. Install the module correctly: Insert the transceiver into the supported SFP slot and secure it according to the switch installation procedure.
9. Check fiber polarity: Ensure that the transmit path at one end connects to the receive path at the other end.
10. Verify link establishment: Check the switch-port status, network management interface, and supported diagnostic indicators.
11. Investigate optical faults: If the link is unstable, inspect connector cleanliness, cable damage, optical loss, transceiver seating, and remote-end compatibility.
12. Record commissioning details: Document the module reference, switch ports, fiber route, link speed, and available optical diagnostic readings.

Compatible System Components

Recommended Related Models

Key Advantages

• Supports 10 Gbps Ethernet over compatible singlemode fiber.
• Provides a specified optical reach of up to 10 km.
• Uses a dual LC interface at a nominal wavelength of 1310 nm.
• Supports digital optical monitoring through compatible switch management interfaces.
• Enables high-speed links between industrial Ethernet network segments.

Technical FAQs

What is the difference between the 1783-SFP10GLRE and the 1783-SFP10GSRI?

The 1783-SFP10GLRE uses 10GBASE-LR singlemode fiber at 1310 nm, with a specified reach of up to 10 km. The 1783-SFP10GSRI uses 10GBASE-SR multimode fiber at 850 nm and supports shorter distances that depend on the multimode fiber specification. The two modules use different optical interfaces and should be selected according to the installed fiber infrastructure.

Does the 1783-SFP10GLRE support digital optical monitoring?

Yes. Digital optical monitoring is supported through compatible Stratix switch management functions. The available readings depend on the switch and its management interface.

Can the module operate over a fiber route shorter than 10 km?

Yes, provided the connection meets the transceiver’s optical requirements. On very short links, the received optical power must still remain within the permitted range; attenuation may be necessary if the optical signal is too strong.

What should be checked if the switch detects the SFP but the 10G link remains down?

Check the remote transceiver type, fiber polarity, LC connector cleanliness, switch-port configuration, and firmware compatibility. Also inspect the optical diagnostic readings, where available, and verify that the received signal falls within the specified optical power range.