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Table 8.2 Ethernet Port Down States Indicated by ERUN, ET/R LED Combinations
LED combination displayed State
ERUN lit Ethernet Port operating normally in standby mode (parameter setup wait state)
The Ethernet Port goes to this state after power is first applied and after a reset.
Ethernet Port operating normally in run mode (transmission possible)
The Ethernet Port switches to this mode in response to an operating mode control
request.
(Parameter setup is required to switch the Ethernet Port to run mode.)
ERUN off, An error occurred during operation and the Ethernet Port is down.
ET/R (Ethernet transmission/ Possible causes of the Ethernet Port going down Down information error code
receive) blinking Watchdog timeout occurred 0010
Memory bus stall occurred 0020
Trap occurred 0030
Jabbering timeout occurred 0040
Semaphore acquisition error 0500, 0501
Semaphore acquisition error 0502, 0503
MBX reception error 0504
MBX transmission error 0505
No empty TCP resend queue 0506
Acquired buffer was in use 0507
Initial buffer acquisition error 0508
Down mode due to the occurrence of an error during self diagnostics at power on.
Possible causes of the Ethernet Port going down Down information error code
LAN controller check error 0050
ROM BCC check found a discrepancy 0160
System RAM area check error 0260
T2N interface buffer check error 0360