Rockwell Automation 160 DEVICENET (DN1) MODULE FRN 1-2.XX - Manual (Page 24)

Publication 0160-5.5 - September 1997
Chapter
4
Modes of Operation
This chapter contains the following information:
• Powering up the drive with the DeviceNet module installed.
• The module’s modes of operation.
Refer to the Attention statements on page P-3 and P-4 in the Preface.
Powering Up the Drive After you have installed the Communication Module, apply power to
the drive and to the Network. The COMM LED should flash green or
turn solid green. If it does not, refer to Chapter 7, Troubleshooting.
Modes of Operation The Communication Module has three modes of operation:
• Power-up reset mode.
• Run mode.
• Error mode.
Power-up Reset Mode
During power-up or reset, the COMM LED is off.
The Communication Module follows this sequence of operation:
1. When power-up occurs, the COMM LED flashes green for 1/4
second, red for 1/4 second, and then goes blank while the Com-
munication Module finishes its initialization.
2. Performs power-up initialization.
3. Reads and stores the DIP switch settings.
4. Performs a duplicate node address check to verify that another
node is not assigned the same DeviceNet address as the Commu-
nication Module.
If the power-up or reset is successful, the Communication Module
enters the run mode and the LED flashes green or turns solid green.