GE PACSystems RX7i Reference Manual page 106

EOK LED Operation
The EOK LED indicates whether the Ethernet interface is able to perform normal operation. This LED is
on for normal operation and blinks for all other operations. When a hardware or unrecoverable runtime
failure occurs, the EOK LED blinks a two-digit error code identifying the failure. The LED first blinks to
indicate the most significant error digit, then after a brief pause blinks again to indicate the least
significant error digit. After a long pause the error code display repeats.
EOK LED Blink Codes for Ethernet Hardware Failures
Blink Code Description
0x12 Undefined or Unexpected Interrupt.
0x13 Timer failure during power up diagnostics.
0x14 DMA failure during power up diagnostics.
0x21 RAM failure during power up diagnostics.
0x22 Stack error during power up diagnostics.
0x23 Shared Memory Interface error during power up diagnostics.
0x24 Firmware CRC (cyclic redundancy check) error during power up or Factory Test.
0x25 Run time exception
0x31 Undefined instruction or divide by zero
0x32 Software interrupt
0x33 Instruction pre-fetch abort
0x34 Data abort
0x35 Unexpected Runtime IRQ
0x36 Unexpected Runtime FIQ (fast interrupt request)
0x37 Reserved Exception or branch through zero
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CRC error or software error during normal operation causes Ethernet restart.
GFK-2222AD
Chapter 2. CPU Features & Specifications
April 2018
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