Switch User Manual

Publication 1783-UM002C-EN-P - April 2009 63
Chapter 2
Run a Power-on Self-test
(POST)
When the switch powers on, it automatically initiates a POST. The POST runs
a series of tests that verify that the switch functions properly and assures that it
is ready to install.
To test the switch, follow these steps.
1. Apply power to the switch.
2.
Verify POST Results, page 63.
3. Disconnect Power, page 64.
Verify POST Results
When you apply power the switch, it automatically begins a series of self tests
(POST). During a POST, you see the following.
• All status indicators are off for a few seconds.
• Each status indicator is tested. One at a time, the EIP Mod, EIP Net,
Setup, Pwr A, and Pwr B status indicators each briefly display green,
then red, and then go off.
• The EIP Mod status indicator then blinks green as the boot loader
verifies the basic functionality of the processing and memory hardware.
• Assuming all tests pass, the EIP Mod status indicator blinks green as the
software image loads.
• If the POST fails, the EIP Mod status indicator turns red.
ATTENTION
POST failures are usually fatal. Contact your Rockwell
Automation representative immediately if your switch does not
pass POST.