164 Ethernet module User’s Manual
Chapter 7 RAS Information
7
7.2 Down Information
When an EN311 goes down, the factor that caused that transition is stored in the S
controller interface memory as one word of data. This data can be read by the S
controller with the MREAD instruction.
Table 7-1 lists the down information error codes and the factors that caused the transition
to down mode.
Important note
This area is a read-only area. Do not attempt to write data to it using the MWRITE
instruction. If you do, data may no longer be read correctly.
Table 7-1 Down Information
Error code (H) Description
0010 Watchdog timeout
0020 Memory bus stall
0030 A TRAP occurred
0040 Jabbering timeout
0050 LAN controller check error
0160 ROM BCC check data match error
0260 System RAM area check error
0360 S controller interface memory check error
0500, 0501 Semaphore acquisition error
0502, 0503 Semaphore acquisition error
0504 MBX receive error
0505 MBX send error
0506 TCP resend queue full
0507 Acquired buffer in use
0508 Error in acquiring initial buffer
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