Appendix a, Specifications, Communications – Rockwell Automation 20-COMM-M Modbus/TCP Adapter User Manual

Page 75: Electrical, Mechanical, Aspecifications, Appendix

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20-COMM-M Modbus/TCP Adapter User Manual

Publication 20COMM-UM014C-EN-P

Appendix

A

Specifications

Appendix A presents the specifications for the adapter.

Communications

Electrical

Mechanical

Topic

Page

Communications

A-1

Electrical

A-1

Mechanical

A-1

Environmental

A-2

Regulatory Compliance

A-2

Network

Protocol
Data Rates

Connection Limits

Requested Packet Interval (RPI)
Packet Rate

Modbus/TCP
10 Mbps Full Duplex
10 Mbps Half Duplex
100 Mbps Full Duplex
100 Mbps Half Duplex
30 TCP connections
16 simultaneous CIP messaging connections and 1 Modbus/

TCP I/O connection

Explicit messaging-based control using PCCC or the
Register or Assembly objects

Explicit messaging where “connected” is NOT chosen,
which is typically the default

DriveExplorer connections to the drive

DriveExecutive connections to the drive

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

Drive

Protocol
Data Rates

DPI
125 kbps or 500 kbps

Consumption

Drive

Network

350 mA at 5 VDC supplied by the host (drive or DPI External

Comms Kit)

None

Dimensions

Height
Length
Width

19 mm (0.75 inches)
86 mm (3.39 inches)
78.5 mm (3.09 inches)

Weight

85 g (3 oz.)

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