OVERVIEW

Official designation: Allen-Bradley 20-COMM-C (PowerFlex, ControlNet Communication Adapter)

Role/Application: Adapter integrating PowerFlex 70-750 and SMC controllers into ControlNet networks, enabling high-speed 5 Mbps deterministic data exchange via DPI interface.

KEY SPECS SUMMARY

Power: 275 mA at 5V DC from host

Interfaces / Ports: 20-pin DPI, Two BNC ports for coax

Indicators: Four LEDs for DPI, Adapter, Network

Operating Temp: Minus 10 degrees C to 50 degrees C

Platform / Compatibility: PowerFlex 70, 700, 750 Series, SMC Flex/SMC-50

Limit: 5 percent to 95 percent relative humidity non-condensing

Lifecycle: Refer to the latest manufacturer manual.

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the fixed data communication rate used by the 20-COMM-C ControlNet adapter?

A: The adapter utilizes the standard ControlNet fixed data rate of 5 Mbps full duplex communication.

Wiring & Installation:

Q: What are the primary connectors used on the 20-COMM-C adapter for network wiring?

A: The primary network connectors are two BNC ports for coaxial ControlNet media and one 20-pin DPI connector.

Troubleshooting & Compatibility:

Q: What are the functions of the four LED status indicators on the adapter?

A: The four LEDs indicate status for DPI, the adapter module itself, and two for the ControlNet network.

Replacement & Upgrades:

Q: What is the fiber optic version of the ControlNet adapter in the same series?

A: The fiber optic media equivalent of this adapter is the Allen-Bradley 20-COMM-Q ControlNet Fiber Media Adapter.