Product Overview
The Allen-Bradley 20-COMM-E functions as a dedicated communication adapter that bridges Ethernet/IP networks with PowerFlex drives using the Drive Peripheral Interface (DPI). This module enables high-speed data exchange between the host drive and higher-level control systems, such as ControlLogix or CompactLogix platforms. By facilitating real-time parameter access and control, the 20-COMM-E allows operators to monitor motor performance, adjust drive configurations, and execute diagnostic tasks across a standard industrial Ethernet infrastructure.
Technical Specifications
- Model Number: 20-COMM-E
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Communication Protocol: EtherNet/IP
- Interface Type: Drive Peripheral Interface (DPI)
- Network Speeds: 10/100 Mbps (Full/Half Duplex)
- Maximum Connections: 30 TCP / 16 CIP
- Weight: 0.15 kg
- Dimensions: 15.1 cm x 12.8 cm x 5.3 cm
- Input Power: 350 mA (Supplied by Host Drive)
- Operating Temperature: -10°C to 50°C
- Status: Discontinued (Effective June 30, 2016)
Operational Characteristics and Integration
Engineers utilize the 20-COMM-E to modernize drive control architectures. Because the adapter supports exclusive-owner I/O connections, it ensures precise, deterministic control over the connected PowerFlex drive. Furthermore, the module handles high-speed packet processing, which consequently supports demanding motion and process control applications that require rapid update rates. This architectural efficiency minimizes communication latency, thereby improving the overall responsiveness of the control loop.
The 20-COMM-E integrates directly into the drive’s communication port, which simplifies physical installation and eliminates the need for external power supplies. Moreover, the adapter features comprehensive diagnostic capabilities, allowing the system to flag network faults or communication timeouts immediately. By implementing this module, facility managers standardize their network communications across legacy PowerFlex 70 and 700 series drives. Ultimately, this hardware provides the essential connectivity required to integrate motor control assets into a unified, Industry 4.0-ready automation network, while maintaining the high availability demanded by critical manufacturing processes.
