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0.5…0.8 mm2 (20…18 AWG) solid or stranded, UL/CSA- rated style 1007 or 1569 twisted-pair copper appliance wiring material (AWM) wire, 6.3 mm (0.25 in.) ±0.5 mm (0.02 in.) strip length
Wire size, DC power connection:
0.5…0.8 mm2 (20…18 AWG) solid or stranded copper wire rated at 75 °C (167 °F) or greater, 1.2 mm (3/64 in.) insulation max, 6.3 mm (0.25 in.) ±0.5 mm (0.02 in.) strip length
The 1783-BMS20CL is a Stratix 5700 series industrial managed Ethernet switch manufactured by Allen-Bradley, specifically designed for deploying high-reliability Ethernet/IP networks. The unit features a total of 20 ports, configured as 16 Fast Ethernet copper ports (including 2 combo ports) and 2 dedicated SFP expansion slots for fast Ethernet fiber connections. Operating on an external 24V DC power supply, this device provides the foundational hardware for robust industrial automation connectivity.
"On-Machine" technology available rated IP67 for dust and wash-down protection
Include predefined Logix tags provide premium diagnostics and allows for better network analysis
Add-On Profiles provide premier integration into Rockwell’s Integrated Architecture for quick configuration and deployment
By supporting the Common Industrial Protocol over Ethernet, this equipment enables data exchange with Logix controllers and interacts with visualization systems, meeting the strict continuity requirements of network applications that cannot tolerate outages. In terms of physical connectivity and hardware wiring, the twenty available ports include sixteen Fast Ethernet copper ports supporting 10/100 Mbps, two Gigabit Ethernet combo ports supporting 1 Gbps transmission speeds, and two Small Form-factor Pluggable network interface slots for fiber optic Gigabit Ethernet, thereby supporting linear, star, Device Level Ring, and other industrial Ethernet network topologies.
This hardware is a stand-alone device that does not require a backplane for installation, instead drawing power directly from an external supply unit compliant with Class 2 or Safety Extra Low Voltage standards. Regarding isolation and environmental resilience, the unit features an open type enclosure with a T4 temperature code and has been type tested at 850 VDC for 60 seconds, requiring installation inside a protective enclosure that guards against field contaminants such as dirt, dust, moisture, and water while maintaining a surrounding air temperature between -40 and 60 degrees Celsius or -40 and 140 degrees Fahrenheit to ensure long-term stable operation.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Allen Bradley 1783-BMS20CL Managed Ethernet Switch Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Automotive Manufacturing
Used in body welding and final assembly lines to connect ControlLogix controllers, robots, and variable frequency drives (VFDs), ensuring bumpless network switching via DLR (Device Level Ring) during cable breaks.
Food & Beverage Processing
Applied in high-speed bottling, packaging, and dairy pasteurization lines, utilizing its IP20 wide-temperature capability to connect in-cabinet PLCs with field distributed I/O modules.
Oil & Gas Extraction
With Class I, Div 2 hazardous location certifications, it is safely installed in control cabinets at wellheads and metering stations to connect SCADA systems with field RTUs.
Pharmaceuticals & Biotechnology
Used in batching, fermentation, and reactor control to upload precise network diagnostics via predefined Logix tags, meeting GMP audit trail requirements for network stability.
Metals & Mining Processing
Used in ore processing plants, conveyor systems, and blast furnace auxiliary controls to withstand harsh environments with high dust and heavy mechanical vibration, ensuring stable transmission of interlock signals.
Power & Energy Management
Installed in plant electrical rooms or wind turbine tower control cabinets, using FactoryTalk View faceplates to display switch port status and power alarms directly to operators.
Since this specific model features Lite firmware, it does not support advanced routing functions like NAT. Therefore, verify that your network architecture requires no cross-segment mapping before deployment. The two Combo ports share internal channels with the final two copper ports, meaning they must never be populated and used simultaneously.
Given its IP20 rating, the switch must be installed inside a standard control enclosure with adequate ventilation, dust protection, and humidity control, while strictly utilizing the dual 24V DC inputs for power redundancy. During configuration, it is critical to import the corresponding AOP (Add-On Profile) within Studio 5000 to properly enable premium network diagnostics via Logix tags.
1783-BMS20CL features vertical DIN-rail mounting and is configured with 16 Fast Ethernet copper ports, 2 combo ports, and 2 SFP fiber slots. It supports dual 12–48 VDC redundant power supplies alongside a wide operating temperature range from -40 °C to +60 °C. The device offers IGMP snooping, VLAN isolation, DLR ring supervisor capabilities, and a PC-free SD card backup function, enabling premier integration with Studio 5000. This product was discontinued in September 2024, and the officially recommended replacement model is 1783-CMS20DB.
It is a Stratix 5700 series 20-port industrial managed Ethernet switch manufactured by Allen-Bradley under Rockwell Automation, equipped with the Lite firmware system.
How should the 1783-BMS20CL and similar products be used correctly?
The device should be securely snapped vertically onto a standard 35mm DIN rail using its integrated metal latches, typically deployed inside industrial control cabinets to connect multiple controllers, HMIs, and field I/O nodes into a local network.
How many physical network ports are configured on the 1783-BMS20CL?
It provides a total of 20 ports, including 16 standard RJ45 10/100 Base-T copper ports, 2 Fast Ethernet combo ports (copper or SFP slot), and 2 dedicated Fast Ethernet SFP fiber slots.
What is the purpose of the dual power input feature on the 1783-BMS20CL?
It provides redundant power terminal blocks. If one external DC distribution loop experiences an unexpected outage, the device seamlessly switches to the alternative backup DC power source to maintain uninterrupted communication.
What are the strict electrical specifications for external cables and connectors used with the 1783-BMS20CL?
External copper cabling must use RJ45 connectors complying with IEC 60603-7, and the cable rating must be at least Category 5e or higher shielded twisted-pair following the TIA 568-B.1 standard.
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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