Allen-Bradley 20-COMM-E

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

20-COMM-E

Type

Drive communication adapter

Application

Drive network communication

Used with

PowerFlex 7-class drives

Requested Packet, interval (RPI)

5 ms minimum

Packet Rate

Up to 400 total I/O packets per second (200 in and 200 out)

Drive, protocol

DPI

Drive, data Rates

125 kbps or 500 kbps

Consumption, drive

350 mA at 5V DC supplied by the host (drive or DPI External Comms Kit)

Accessory Type

Comm Adaptor

Communications Kits

EtherNet/IP Protocol,Requires Comm Carrier Card

Consist Of

Internal Interface Cables

For Use With

7-Class

Technical documents (1)

• Rockwell Automation user manual 20COMM-UM010

Key features

• EtherNet/IP protocol communications kit for PowerFlex
• Requested Packet Interval of 5 ms minimum
• Up to 400 total I/O packets per second
• DPI drive protocol at 125 kbps or 500 kbps
• Requires a Comm Carrier Card; consists of internal interface cables

About the Allen-Bradley 20-COMM-E

The 20-COMM-E is a PowerFlex EtherNet/IP communication adapter for 7-Class drives, supplied as a kit of internal interface cables that needs a Comm Carrier Card (user manual 20COMM-UM010). Minimum RPI is 5 ms, with up to 400 I/O packets per second (200 in, 200 out), and DPI drive data runs at 125 kbps or 500 kbps. It draws 350 mA at 5V DC from the host drive or a DPI External Comms Kit.

What is the 20-COMM-E used for?

It connects a PowerFlex 7-Class drive to an EtherNet/IP network for control and monitoring, talking to the drive over DPI.

Lifecycle and successor

Active Mature (Rockwell Automation lifecycle status, checked 25 October 2026).

Before you order

What to photograph or confirm so the right unit is quoted.

Read the catalog number 20-COMM-E, the series letter and the firmware revision from the label. Send us a photo of the label and we confirm the match before we quote.