Product Overview
The Allen-Bradley 1783-BMS20CGP is a managed Ethernet switch from the Stratix 5700 series, engineered for demanding industrial environments. This 20-port switch combines 16 Fast Ethernet copper ports, 2 Gigabit combo ports, and 2 fiber SFP slots, offering flexible connectivity for modern control systems. With a conformal coat protecting against dust, moisture, and high temperatures, the 1783-BMS20CGP ensures reliable operation in harsh conditions.
Part of the Allen-Bradley Stratix 5700 family, this switch supports advanced features like Device Level Ring (DLR) and CIP Sync (IEEE 1588), enabling resilient network architectures and precise time synchronization for motion control and high-speed applications.
Key Benefits & Features
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20 total ports – 16 FE copper, 2 GE combo, 2 FE fiber for versatile network design
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Conformal coat – protects against dust, moisture, and temperature extremes
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DLR support – enables ring topology for network redundancy and fast recovery
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CIP Sync (IEEE 1588) – provides precise time synchronization for coordinated automation
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Dual power inputs – ensures uptime with redundant power sources
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Predefined Logix tags – simplifies diagnostics and network analysis
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FactoryTalk View faceplates – offers real-time status monitoring and alarming
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Add-On Profiles – integrates seamlessly into Rockwell Automation's Integrated Architecture
Technical Specifications
| Specification |
Value |
| Manufacturer |
Allen Bradley |
| Product Line |
Stratix 5700 |
| Part Number |
1783-BMS20CGP |
| Product Type |
Managed Ethernet switch |
| Total Ports |
20 |
| RJ45 Copper Ports |
16 (Fast Ethernet) |
| Combo Ports |
2 (Gigabit Ethernet, copper or fiber) |
| Fiber Ports |
2 (Fast Ethernet SFP) |
| Firmware Version |
Full |
| Device Level Ring (DLR) |
Yes |
| CIP Sync (IEEE 1588) |
Yes |
| Network Address Translation (NAT) |
No |
| Conformal Coat |
Yes |
| Operating Temperature |
-40…60°C (-40…140°F) |
| Storage Temperature |
-40…85°C (-40…185°F) |
| Relative Humidity |
5–95% non-condensing |
| ESD Immunity |
8 kV contact, 15 kV air |
| Input Voltage |
12–48 VDC |
| Dimensions (H x W x D) |
5.1 x 5.0 x 5.3 in |
| Weight |
4.38 lbs (1.98 kg) |
| UPC |
886739973569 |
Real-World Applications
The 1783-BMS20CGP excels in applications requiring resilient, high-performance networking. In a manufacturing plant, it can connect PLCs, HMIs, and drives in a ring topology using DLR, ensuring minimal downtime if a cable fails. The CIP Sync feature is critical for coordinated motion control systems where multiple axes must move in perfect sync.
In process industries, the conformal coat protects the switch from corrosive atmospheres and wash-down environments, making it suitable for food and beverage or chemical plants. With dual power inputs, the switch maintains operation during power supply changes, safeguarding critical processes.
Installation & Setup Guidance
Mount the 1783-BMS20CGP on a DIN rail in a well-ventilated enclosure. Ensure the operating temperature stays within -40…60°C. Connect power to both inputs for redundancy using a 12–48 VDC source. For DLR, configure the switch as a ring supervisor or participant using the web interface or Studio 5000. Use the console port for initial setup. Verify that all fiber connections use the correct SFP modules and that copper cables are shielded for industrial environments.
Maintenance & Reliability
Regularly inspect the switch for dust accumulation on ports and vents. The conformal coat minimizes corrosion, but periodic checks for physical damage are recommended. Monitor the network via FactoryTalk View faceplates to detect anomalies early. Given the robust design and DLR redundancy, the 1783-BMS20CGP offers long service life with minimal maintenance, reducing total cost of ownership.
Selection Guide & Purchasing Advice
Before purchasing, confirm your required port count and media types. The 1783-BMS20CGP suits networks needing 16 copper FE ports plus fiber and gigabit uplinks. Verify that your control system supports DLR and CIP Sync to leverage these features. For a reliable supply, PLC Source PRO offers genuine Allen-Bradley products with competitive pricing. Ensure you have the correct SFP modules and power supply for your installation.