PowerFlex Architecture 20-COMM-E Allen-Bradley EtherNet/IP DPI Adapter

Product Overview

The Allen-Bradley 20-COMM-E is a specialized EtherNet/IP to DPI communication adapter manufactured by Rockwell Automation. This interface module embeds directly into compatible PowerFlex variable speed drives to provide network-based control, monitoring, and configuration capabilities.

Functional Operation

This communication module establishes high-speed digital connectivity between industrial control platforms and PowerFlex adjustable speed drives. It bridges the Drive Peripheral Interface (DPI) architecture with modern standard Ethernet networks. Consequently, automation engineers can configure exclusive-owner I/O connections for precise motor control. The device simultaneously handles multiple control tasks, explicit messaging, and parameter manipulation. Furthermore, it manages up to 30 TCP connections or 16 concurrent CIP connections. This broad network capacity allows multiple controllers or human-machine interfaces to access drive statistics concurrently.

Network Compatibility and Integration

The hardware interfaces directly with diverse Rockwell Automation processor platforms. These systems include ControlLogix, CompactLogix, PLC-5, SLC 500, and MicroLogix controllers. The adapter automatically accommodates 10 Base-T or 100 Base-TX physical layers. It supports both full-duplex and half-duplex transmission modes. To ensure reliable real-time drive coordination, the card delivers a requested packet interval (RPI) down to 5 milliseconds. The module handles 400 I/O packets per second, which maintains continuous, high-speed throughput for time-critical automation applications.

Technical Specifications

• Brand: Allen-Bradley / Rockwell Automation
• Model Number: 20-COMM-E
• Product Type: EtherNet/IP to DPI Communication Adapter
• Compatibility: PowerFlex 70, PowerFlex 700, PowerFlex 700H, PowerFlex 700S, PowerFlex 700L, PowerFlex 753 (via carrier), and PowerFlex 755
• Protocol Support: EtherNet/IP, CIP, DPI
• Network Connection: Single RJ45 port
• Data Rates: 10 Mbps and 100 Mbps, auto-negotiating
• Input Current: 350 mA at 5V DC (supplied directly by the host drive)
• Power Consumption: 1.75 W
• Operating Temperature: -10 to 50°C (14 to 122°F)
• Storage Temperature: -40 to 85°C (-40 to 185°F)
• Relative Humidity: 5 to 95% non-condensing
• Module Dimensions: 1.9 x 8.6 x 7.85 cm
• Weight: 0.085 kg (shipping weight 0.15 kg)
• Standards Compliance: UL508C, CAN/CSA C22.2, EN61800-3, CE, C-Tick
• Lifecycle Status: Discontinued legacy component (June 30, 2016)
• Harmonized Tariff Code (HS Code): 8537101190