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Product Overview
The Allen-Bradley 1783-US16T2S is an 18-port unmanaged Ethernet switch belonging to the Rockwell Automation Stratix 2000 family. It provides 16 copper Fast Ethernet ports and two SFP fiber slots for industrial network connectivity.
The 16 RJ45 ports support 10/100 Mbps Ethernet communication, while the two SFP slots provide additional 100 Mbps fiber connectivity through compatible separately installed transceiver modules. This combination allows the switch to connect multiple automation devices while providing optical network connections between different equipment areas.
As an unmanaged switch, the 1783-US16T2S operates without requiring complex network configuration. Its plug-and-play operation makes it suitable for industrial installations where straightforward Ethernet connectivity is required.
The switch can connect PLCs, HMIs, industrial computers, and other Ethernet-enabled equipment within a local automation network. Its combination of copper ports and fiber SFP interfaces also makes it useful for extending network connections beyond individual control cabinets.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Type | Stratix 2000 Unmanaged Ethernet Switch |
| Model | 1783-US16T2S |
| Product Series | Stratix 2000 |
| Switch Type | Unmanaged Ethernet Switch |
| Total Number of Ports | 18 |
| RJ45 Ports | 16 |
| RJ45 Port Speed | 10/100 Mbps |
| SFP Slots | 2 |
| SFP Port Speed | 100 Mbps |
| Network Type | Ethernet |
| Copper Interface | RJ45 |
| Fiber Interface | SFP |
| SFP Modules | Ordered Separately |
| Configuration | Plug and Play |
| Dimensions | 114.8 × 79.6 × 134 mm |
| Weight | 0.8 kg |
Product Features
- 18-port network connectivity: Combines 16 copper Ethernet ports with two fiber SFP slots for connecting multiple industrial network devices.
- 16 Fast Ethernet ports: Supports 10/100 Mbps communication through standard RJ45 interfaces.
- Two fiber SFP slots: Provides additional optical network connectivity using compatible 100 Mbps SFP modules.
- Unmanaged operation: Allows network devices to communicate without requiring advanced switch configuration.
- Plug-and-play installation: Simplifies deployment in industrial control cabinets and distributed automation networks.
- Mixed-media connectivity: Combines copper and fiber interfaces within one switching device.
- Broadcast storm protection: Provides protection against excessive broadcast traffic when enabled through the switch DIP switch.
- Industrial network integration: Supports Ethernet connections between PLCs, HMIs, computers, and other automation equipment.
Working Principle
The 1783-US16T2S operates as an unmanaged Ethernet switch, forwarding network frames between connected devices according to their destination MAC addresses.
When an Ethernet device transmits data through one of the RJ45 ports, the switch examines the incoming Ethernet frame and determines the appropriate destination port. It then forwards the data to the connected device or network segment.
Its 16 copper ports support 10/100 Mbps Fast Ethernet communication. For fiber connections, the two SFP slots provide 100 Mbps optical interfaces when compatible SFP transceivers are installed.
The basic communication arrangement is:
PLC / HMI / Industrial PC → 1783-US16T2S → Copper Ethernet or Fiber Network → Other Industrial Devices
Because the switch is unmanaged, it handles ordinary Ethernet forwarding without requiring administrators to configure VLANs, routing tables, or advanced switching parameters.
The broadcast storm protection function can be enabled through the designated DIP switch to help prevent excessive broadcast traffic from disrupting normal network communication.
Role in the Stratix 2000 Industrial Ethernet Architecture
The 1783-US16T2S functions as a central connectivity device in industrial Ethernet networks.
It provides multiple copper connections for local automation equipment and two SFP interfaces for fiber-based network expansion. This arrangement allows engineers to connect devices within a control cabinet while also establishing optical connections to remote network locations.
A typical network arrangement is:
Industrial Controller → 1783-US16T2S → PLCs / HMIs / Industrial Computers / Remote Fiber Network
| System Component | Function |
|---|---|
| 1783-US16T2S | Provides 18-port unmanaged Ethernet switching |
| PLC Controller | Executes automation logic and exchanges process data |
| HMI Panel | Displays operating conditions and operator controls |
| Industrial Computer | Supports engineering, monitoring, and data processing |
| SFP Transceiver | Provides compatible fiber-optic network connectivity |
| Fiber Ethernet Cable | Connects remote network segments |
| RJ45 Ethernet Cable | Connects local industrial Ethernet devices |
The switch handles Ethernet frame forwarding, while connected controllers and automation equipment perform their respective control and communication functions.
Industrial Applications
| Application | Typical Use |
|---|---|
| Factory Automation | Connecting multiple PLCs and industrial Ethernet devices |
| Industrial Control Cabinets | Providing centralized Ethernet connections |
| Manufacturing Lines | Linking controllers, HMIs, and industrial computers |
| Packaging Machinery | Connecting machine controllers and operator interfaces |
| Process Automation | Supporting local Ethernet communication between control devices |
| Material Handling | Connecting conveyor controllers and monitoring equipment |
| SCADA Networks | Providing local network connectivity for monitoring systems |
| Building Automation | Connecting Ethernet-enabled control equipment |
| Distributed Industrial Networks | Linking local copper devices with remote fiber connections |
| Machine Communication | Providing Ethernet connectivity between automation components |
Installation and Maintenance
- Verify the switch model: Confirm that 1783-US16T2S is the required 18-port unmanaged Ethernet switch.
- Select the installation location: Mount the switch in a suitable industrial control cabinet or equipment enclosure.
- Check mounting arrangements: Ensure that the mounting surface and installation hardware are appropriate for the switch.
- Verify power requirements: Check the equipment nameplate and installation instructions before connecting the power supply.
- Inspect Ethernet ports: Examine the RJ45 interfaces for contamination, damaged contacts, or physical deformation.
- Check fiber interfaces: Confirm that the two SFP slots are clean and that the selected transceivers are compatible with the switch.
- Install compatible SFP modules: Insert the required 100 Mbps fiber transceivers according to their installation instructions.
- Connect network devices: Use suitable Ethernet cables to connect PLCs, HMIs, industrial computers, and other network equipment.
- Check fiber connections: Verify optical connector cleanliness and correct transmit/receive polarity when using fiber connections.
- Verify link indicators: Inspect the port status LEDs to confirm that connected devices establish the expected Ethernet links.
- Monitor network operation: Check communication between connected devices and investigate unexpected link interruptions or excessive network traffic.
- Document maintenance activities: Record the switch model, port assignments, SFP configurations, connected equipment, and maintenance history.
Compatible System Components
| Component | Product Type | Function |
|---|---|---|
| Allen-Bradley Stratix 2000 | Unmanaged Ethernet Switch | Provides additional industrial Ethernet connectivity |
| Allen-Bradley 1783-SFP100FX | 100 Mbps Multimode Fiber SFP | Provides compatible multimode optical connectivity |
| Allen-Bradley 1783-SFP100LX | 100 Mbps Single-Mode Fiber SFP | Provides compatible single-mode optical connectivity |
| Allen-Bradley Stratix 5700 | Managed Ethernet Switch | Supports industrial Ethernet network expansion |
| Allen-Bradley ControlLogix | Programmable Automation Controller | Executes industrial automation control programs |
| Allen-Bradley CompactLogix | Programmable Automation Controller | Provides machine-level automation control |
Key Advantages
- Provides 18 Ethernet connection interfaces.
- Combines 16 copper Fast Ethernet ports with two fiber SFP slots.
- Supports 10/100 Mbps communication through RJ45 interfaces.
- Allows fiber connectivity through separately installed SFP modules.
- Provides plug-and-play unmanaged network operation.
- Includes configurable broadcast storm protection.
- Supports connections between multiple industrial automation devices.
Recommended Related Models
- 1783-US16T – Stratix 2000 16-Port Unmanaged Ethernet Switch
- 1783-US14T2S – Stratix 2000 16-Port Unmanaged Ethernet Switch
- 1783-US8T – Stratix 2000 8-Port Unmanaged Ethernet Switch
- 1783-US6T2F – Stratix 2000 8-Port Unmanaged Ethernet Switch with Fiber Connectivity
- 1783-US6T2H – Stratix 2000 8-Port Unmanaged Ethernet Switch with Single-Mode Fiber
- 1783-USP2SG16T – Stratix Unmanaged Ethernet Switch
Technical FAQs
How many devices can the 1783-US16T2S connect?
The switch has 18 physical network interfaces: 16 RJ45 copper ports and two SFP slots. The actual number of connected devices depends on how the interfaces are configured and used.
Are the two SFP fiber modules included with the 1783-US16T2S?
The two SFP slots are provided on the switch, but the fiber transceiver modules must be ordered separately. Compatible 100 Mbps SFP modules should be selected according to the required fiber type and transmission distance.
Does the 1783-US16T2S support Gigabit Ethernet?
No. Its 16 copper ports support 10/100 Mbps Fast Ethernet, and its two SFP slots support 100 Mbps fiber connectivity. It is not an 18-port Gigabit Ethernet switch.
Does this switch require software configuration before operation?
No. The 1783-US16T2S is an unmanaged switch with plug-and-play operation. It forwards Ethernet traffic without requiring advanced network configuration through management software.