Order now 1787-PLUG10R to optimize your DeviceNet wiring and ensure high-reliability connections in space-constrained industrial enclosures. The Allen-Bradley 1787-PLUG10R is a specialized 10-pin right-angle terminal block connector designed specifically for DeviceNet communication and power interfaces. This connector is commonly utilized on Flex I/O adapters, scanner modules, and various drive interfaces within the Rockwell Automation ecosystem. The right-angle (90-degree) exit path is a critical engineering feature that allows for cleaner cable routing in shallow control cabinets, preventing the excessive cable strain and potential internal port damage associated with straight-exit connectors. By utilizing this genuine OEM plug, you ensure that the physical layer of your DeviceNet network maintains low-resistance contact, which is vital for the 125, 250, and 500 Kbps data rates that rely on consistent voltage levels across the trunk and drop lines.
What Is the 1787-PLUG10R?
The 1787-PLUG10R is an unsealed, combicon-style pluggable terminal block. It features 10 gold-plated contacts that align with the specific pinout requirements of Allen-Bradley DeviceNet hardware. In a typical DeviceNet configuration, this plug carries the CAN_H, CAN_L, V+, V-, and Shield signals. The extra pins are often utilized for redundant power or I/O specific to the module it is attached to. Because it is a screw-termination plug, it allows for easy field-wiring of standard thin or thick DeviceNet cables. Its ruggedized polymer housing is designed to withstand the vibration and chemical exposure typical of automotive, food and beverage, and logistics facilities, ensuring that the network backbone remains secure over years of continuous operation.
Key Technical Specifications
- Part Number: 1787-PLUG10R
- Manufacturer: Allen-Bradley / Rockwell Automation
- Connector Type: 10-Pin Pluggable Terminal Block
- Orientation: Right-Angle (90-degree)
- Pitch: Standard 5.08 mm (0.2 in)
- Wire Gauge Range: 22 to 12 AWG
- Contact Plating: Gold (for low-voltage data integrity)
- Current Rating: 8 Amps per contact
- Compatibility: 1794-ADN, 1794-ADNX, and DeviceNet Scanner Modules
DeviceNet Physical Layer Integrity
DeviceNet is a CAN-based protocol that is extremely sensitive to physical connection quality. Any oxidation or loose screw terminals on a 1787-PLUG10R can lead to intermittent «Bus Off» errors or high error frame counts. The gold-plated contacts on this plug are specifically chosen to minimize signal attenuation and prevent the corrosive buildup that often plagues standard tin connectors in high-humidity industrial zones. The right-angle design further enhances reliability by ensuring that the weight of the cable does not leverage the connector out of its socket during machine vibration.
Maintenance Tips
Maintenance teams should treat the 1786-PLUG10R as a critical inspection point during annual PM cycles. Always check the screw terminals for tightness, as thermal cycling in the electrical cabinet can cause wires to loosen over time. An expert tip: when wiring the 1787-PLUG10R, always use ferrules on the wire ends. This prevents stray strands from shorting between the CAN_H and Shield pins, which is a common cause of network-wide failure. Additionally, if the connector has been in a corrosive environment (like a wastewater plant) for more than 5 years, inspect the gold pins for signs of «fretting» and replace the plug if the contact surface appears dull or pitted to maintain high-speed data integrity.
Frequently Asked Questions
Q: Can I use the 1787-PLUG10R on non-DeviceNet equipment?
A: While the physical dimensions may match other 10-pin 5.08mm headers, the 1787-PLUG10R is specifically rated for DeviceNet signaling. Using it elsewhere is possible, but verify the current and voltage requirements first.
Q: Does this plug include the labels for DeviceNet color coding?
A: Most 1787-PLUG10R units are standard black or green; it is highly recommended to follow the ODVA color standard (Red, White, Shield, Blue, Black) when terminating the wires into the 10-pin layout as per your module’s wiring diagram.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
