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- Allen Bradley
- 2711-NC21
- RS-232 Operating Cable
- USA
- 5 meters
- 3 kg
- Xiamen, China
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Product Overview
The Allen-Bradley 2711-NC21 is an RS-232 communication cable designed to connect PanelView operator interfaces and other Allen-Bradley devices to PCs or PLCs for programming, configuration, or data exchange.
It ensures reliable serial communication over moderate distances and is widely used in industrial automation environments for maintenance and setup tasks.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Model | 2711-NC21 |
| Product Type | RS-232 Operating Cable |
| Communication Standard | RS-232 serial protocol |
| Cable Length | 5 meters |
| Connector Type | DB9 / Device-specific (depending on interface) |
| Application | Data transfer, configuration, programming of PanelView and PLC devices |
| Weight | 3 kg (shipping weight) |
| Compatibility | PanelView 300/600/1000 operator interfaces, RS-232-enabled PLCs |
| Environment | Industrial, controlled cable routing recommended |
Function and Working Principle
The 2711-NC21 cable serves as a communication link between operator interfaces or PLCs and a programming device (PC or laptop).
Its main functions include:
- Transmitting programming commands to PanelView terminals
- Facilitating firmware updates
- Allowing data upload/download between PLCs and HMIs
- Supporting troubleshooting and diagnostics
The cable operates using the RS-232 standard, which transmits data serially, bit by bit, ensuring reliable communication over the 5-meter length.
Key Features
- 5-meter length for convenient connection
- Supports RS-232 serial communication standard
- Compatible with multiple Allen-Bradley devices
- Durable industrial-grade cable construction
- Reliable signal transmission for programming and configuration tasks
- Plug-and-play installation with minimal setup
Industrial Applications
- Programming PanelView operator terminals
- Configuring Allen-Bradley PLCs
- Troubleshooting industrial automation systems
- Firmware upgrades and data transfers
- Laboratory or on-site industrial equipment testing
Installation Notes
- Connect the correct end to the PanelView or PLC port
- Connect the other end to a PC or programming device
- Avoid sharp bends or physical damage to the cable
- Keep away from high-power cables to prevent interference
- Ensure RS-232 port settings match device configuration
Compatible Equipment
- Allen-Bradley PanelView 300/550/600/1000 series HMIs
- MicroLogix, SLC 500, and PLC-5 systems with RS-232
- PCs or laptops with DB9 serial port (or USB-to-serial adapter)
- Industrial automation programming devices
Advantages
- Reliable RS-232 serial communication
- Moderate 5-meter length for flexibility
- Durable and industrial-ready design
- Easy to use with Allen-Bradley HMIs and PLCs
- Supports programming, configuration, and troubleshooting
Limitations
- Limited to RS-232 serial standard
- Maximum distance restricted by RS-232 limitations (~15 meters recommended)
- Not suitable for Ethernet-based communication
- Device compatibility dependent on serial protocol
Conclusion
The Allen-Bradley 2711-NC21 RS-232 Operating Cable is a robust and reliable serial communication cable for programming and configuring PanelView operator interfaces and PLCs.
It provides stable data transfer, easy connectivity, and flexibility in industrial automation setup and maintenance.