Allen-Bradley 1783-US7T1F Stratix 2000 Unmanaged Ethernet Switch
Configured for EtherNet/IP deterministic networks in industrial control systems, the Allen-Bradley 1783-US7T1F (1783-US7T1F Unmanaged Switch) provides direct physical/electrical execution. This Stratix 2000 layer-2 unmanaged switch combines 7 Fast Ethernet RJ45 copper ports (10/100 Mbps) with 1 multimode Fast Ethernet fiber optic uplink port (100 Mbps) to extend network segments across electrically noisy or long-distance control environments without IP address configuration or managed software overhead.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1783-US7T1F |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 1.68 lbs (0.76 kg) |
| Dimensions | Standard DIN-Rail Mount Enclosure |
| Operating Temp | -10 to 60 deg C |
| Power Consumption | 24 VDC Nominal (12 to 48 VDC Class 2) |
| Copper Ports | 7 RJ45 Ports (10/100 Mbps, Auto MDI/MDI-X) |
| Fiber Optic Port | 1 Multimode Fiber Port (100Base-FX) |
| Transmission Distance | Up to 2 km via multimode fiber link |
| Mounting Type | 35 mm DIN-Rail Mount |
| Product Family | Stratix 2000 Industrial Ethernet Series |
Backplane Bus & Deterministic Networks
The 1783-US7T1F maintains EtherNet/IP deterministic network traffic flow by utilizing wire-speed store-and-forward switching architecture. Operating as an unmanaged layer-2 interface, the hardware transparently passes CIP (Common Industrial Protocol) message frames between PLC processors, distributed I/O racks, and HMI panels. Integrated broadcast storm protection and full-duplex operation prevent packet collisions, optimizing communication bandwidth and preserving firmware flash compatibility across interconnected controller nodes.
Frequently Asked Questions
Q: Does the 1783-US7T1F require software configuration or IP address assignment before operation?
A: No, the 1783-US7T1F operates as an unmanaged layer-2 switch and functions instantly upon applying 24 VDC power and plugging in Ethernet media cables.
Q: What type of fiber cable and connector is used for the fiber optic port on the 1783-US7T1F?
A: The module uses standard multimode fiber optic cabling (62.5/125 um or 50/125 um) operating at 1300 nm wavelength, extending transmission distance up to 2 km.
Field Installation Guidelines
- Power Supply Terminal: Connect redundant 24 VDC power supply leads to the removable terminal block plug, ensuring proper wire polarity (+VDC, -VDC, and Frame Ground).
- DIN-Rail Snap Installation: Securely latch the rear spring clip of the metal housing onto a standard 35 mm DIN rail inside the control cabinet.
- Copper Cabling Termination: Insert Category 5e or Category 6 industrial shielded twisted-pair (STP) cables into ports 1 through 7 until the RJ45 connectors lock in place.
- Fiber Optic Connection: Remove dust caps from the multimode fiber port and connect clean fiber jumpers, ensuring correct TX-to-RX cross-wiring.
- Grounding & Shielding: Verify the enclosure ground terminal connects directly to the cabinet functional earth stud via a short, heavy-gauge grounding wire to suppress surge voltages and EMI.
Allen-Bradley 1783-US7T1F Stratix 2000 Unmanaged Ethernet Switch
Allen-Bradley 1783-US7T1F Stratix 2000 Unmanaged Ethernet Switch
Configured for EtherNet/IP deterministic networks in industrial control systems, the Allen-Bradley 1783-US7T1F (1783-US7T1F Unmanaged Switch) provides direct physical/electrical execution. This Stratix 2000 layer-2 unmanaged switch combines 7 Fast Ethernet RJ45 copper ports (10/100 Mbps) with 1 multimode Fast Ethernet fiber optic uplink port (100 Mbps) to extend network segments across electrically noisy or long-distance control environments without IP address configuration or managed software overhead.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1783-US7T1F |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 1.68 lbs (0.76 kg) |
| Dimensions | Standard DIN-Rail Mount Enclosure |
| Operating Temp | -10 to 60 deg C |
| Power Consumption | 24 VDC Nominal (12 to 48 VDC Class 2) |
| Copper Ports | 7 RJ45 Ports (10/100 Mbps, Auto MDI/MDI-X) |
| Fiber Optic Port | 1 Multimode Fiber Port (100Base-FX) |
| Transmission Distance | Up to 2 km via multimode fiber link |
| Mounting Type | 35 mm DIN-Rail Mount |
| Product Family | Stratix 2000 Industrial Ethernet Series |
Backplane Bus & Deterministic Networks
The 1783-US7T1F maintains EtherNet/IP deterministic network traffic flow by utilizing wire-speed store-and-forward switching architecture. Operating as an unmanaged layer-2 interface, the hardware transparently passes CIP (Common Industrial Protocol) message frames between PLC processors, distributed I/O racks, and HMI panels. Integrated broadcast storm protection and full-duplex operation prevent packet collisions, optimizing communication bandwidth and preserving firmware flash compatibility across interconnected controller nodes.
Frequently Asked Questions
Q: Does the 1783-US7T1F require software configuration or IP address assignment before operation?
A: No, the 1783-US7T1F operates as an unmanaged layer-2 switch and functions instantly upon applying 24 VDC power and plugging in Ethernet media cables.
Q: What type of fiber cable and connector is used for the fiber optic port on the 1783-US7T1F?
A: The module uses standard multimode fiber optic cabling (62.5/125 um or 50/125 um) operating at 1300 nm wavelength, extending transmission distance up to 2 km.
Field Installation Guidelines
- Power Supply Terminal: Connect redundant 24 VDC power supply leads to the removable terminal block plug, ensuring proper wire polarity (+VDC, -VDC, and Frame Ground).
- DIN-Rail Snap Installation: Securely latch the rear spring clip of the metal housing onto a standard 35 mm DIN rail inside the control cabinet.
- Copper Cabling Termination: Insert Category 5e or Category 6 industrial shielded twisted-pair (STP) cables into ports 1 through 7 until the RJ45 connectors lock in place.
- Fiber Optic Connection: Remove dust caps from the multimode fiber port and connect clean fiber jumpers, ensuring correct TX-to-RX cross-wiring.
- Grounding & Shielding: Verify the enclosure ground terminal connects directly to the cabinet functional earth stud via a short, heavy-gauge grounding wire to suppress surge voltages and EMI.
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