ProSoft Technology PC56-OPC - Manual (Page 19)

Troubleshooting PC56 ♦ ControlLogix Platform
User Manual In-Rack Industrial PC
ProSoft Technology, Inc.
Page 19 of 34
November 18, 2009
5 Troubleshooting
In This Chapter
™ FAQ.......................................................................................................19
If the system has been working properly, verify that the configuration has not
been modified. This includes peripheral PCI module installation, jumper settings,
BIOS settings, and cable connections. If needed, a module swap will verify a
faulty module. Make sure that the system configuration is correct, and that the
module you are replacing the suspect one with is a proven good one.
If the system has not been working properly, or you are installing the module for
the first time, then review the jumper and BIOS settings.
5.1 FAQ
Question:
What do the LEDs mean?
Answer:
BAT - If this LED is ON if the battery is low, or if the Battery Enable jumper is not
installed. As soon as power is applied to PC56, a low battery will begin to charge
and the BAT LED will return to the OFF state within minutes. Twenty hours of
continuous, powered-up operation will fully charge the battery.
USR - This LED is under program control and can be set to RED, GREEN, or
OFF. Review the installed software program guide for information and state
definitions.
OK - On power up, this LED is set to GREEN. During normal operation, if there is
a problem communicating with the ControlLogix backplane it will be set to RED.
This LED is under program and API control. It is sometimes referred to as the
status LED. Refer to your application and the API manual for information.
Question:
How can I tell if a communications port is working properly?
Answer:
There are two LEDs associated with each communications port: the top one is
green and the bottom one is yellow: