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4.3 Ethernet Port Reset
This section describes the Ethernet Port reset procedures. There are two ways to reset an Ethernet
Port as follows:
(1) T2N power on
(2) Reset by a user program running on the T2N
In Ethernet Port reset processing, when one of the above resets occurs, the Ethernet Port first
performs the self check described below. If the self check completes normally, the Ethernet Port
switches to standby mode (the parameter setting wait state), thus completing the reset sequence. If
an error is discovered during the self check, the Ethernet Port goes to the down state.
• Ethernet Port self check items
• System ROM check
• System RAM check
• LAN controller check
• T2N interface buffer memory check
• EEPROM check
See section 4.5, "Operating Mode Control Requests", for more information on the Ethernet Port
operating modes.
(1) T2N power on
When power is applied to the T2N, power is also applied to the Ethernet Port, and the
PU235N/245N performs its reset processing sequence.