# Catalyst LED Patterns

All LEDs ON: This is the first LED pattern seen when the RTU boots. It indicates that IRQs are enabled, SPI bus initialized, and the firmware is scanning the NVM space for a newly downloaded firmware image.

Checkerboard: This is animation pattern shown below. It is the second pattern shown when the product boots.

It persists however long it takes to either:

a) Install the new firmware image found earlier (if any). When that installation complete (or failed for whatever reason), then the “all LEDs on” pattern is briefly displayed before continuing to b).

b) Perform all device, file system and task initializations. If the file system fails any integrity tests (as will happen after any firmware download), a reformat operation will occur. See the “NVRAM Format” pattern description below. The checkerboard will resume when formatting complete.

All LEDs OFF: When seen briefly after the checkerboard during boot, then all tasks have been initialized and normal operations with the usual indications have begun.

When seen after power off button pressed, the RTU has successfully saved current state information and powered down.

Usual Indications: Each LED shows a specific RTU or channel state as indicated by the LED legend and described in section xxx of the Catalyst Operator’s Manual. When this pattern is seen after the checkerboard, the RTU has booted successfully and is available for all normal box activities.

Firmware Download: This animated pattern consists of a single lighted column moving sequentially from left to right. It is seen while the RTU is busy with Alarmware downloading new firmware and hence unavailable for all other normal box activities.

…..etc….

NVRAM Format: This is a funny animated pattern sampled below. The CHECK led (farthest left) is constantly on. LEDs to the right indicate which NVM block number is currently being formatted. The rows form a two’s complements of the binary representation of that block number. As each block is processed, the pattern will slowly count up.

…..etc….

When seen, the RTU is reformatting the entire NVRAM file system and hence unavailable for normal activities until the operation is complete. Then all configuration information will have returned to factory defaults.

This pattern will be seen during RTU boot only if file system corruption is detected, a new firmware installation was successful or a firmware download attempt failed. It is seen during normal RTU operations only when specific programming commands request file system cleardown.

Hardware problems may cause this pattern to freeze or repeatedly restart after reaching a certain block number.