Nematron Pointe Controller - Manual (Page 231)

Pointe Controller User Guide Chapter 9: Troubleshooting
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There are two LEDs, one red and one green, next to the Pointe Controller base
unit’s RJ-11 connector. The red LED is used by the boot procedure to indicate
failure conditions:
Flashes Failure Condition
1 Flash Memory test failed
2 RAM test failed
3 LAN Controller Register test failed
4 Missing memory size configuration
5 Serial port failed to initialize
If any of the above failure conditions exist, then the red LED will continue to flash
the corresponding number of times with a short pause between flash cycles. For
example, if the RAM test has failed, then the red LED will flash three times,
pause, flash three times, pause, flash three times, and so on.
NOTE: In most cases, a failure condition may be cleared by cycling power to the
Pointe Controller unit. If the failure condition reoccurs, then contact Nematron
customer support.
If all boot tests pass and no failure condition exists, then the unit checks to see if
the serial download cable is connected. If it is, then the unit waits for download
commands from the configuration utility (Update Tool).
If the serial download cable is not connected, then the unit will attempt to run
the project currently stored in memory, if any. If there is no project in memory or
if the project fails to run, then the red LED flashes rapidly without pauses to
indicate that user action is required.