GE GFK-1541B manual

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Restart and Enter Software Load State: Pressing and holding the Restart pushbutton until the bottom LED (STAT) turns ON (between 5 and 10 seconds) forces a restart and requests entrance to the Software Load state. A reload is used to install a software update into the module and is not part of normal operation. When the Restart pushbutton is pressed, all LEDs go out. After approximately 5 seconds have elapsed, the STAT LED (bottom LED) comes ON, to indicate that the Ethernet Interface will request a reload. After the Restart pushbutton is released, all LEDs flash ON, then power-up diagnostics run, and the Ethernet Interface waits for the software load with all LEDs blinking in unison.

Notes

Reloading the Ethernet Interface requires the attachment of the PC Software Loader to the Software Loader port and initiating a load with the PC Software Loader. The PC Software Loader is a separate software utility that updates the communications software in the Ethernet Interface. This utility is supplied with any updates to the Ethernet Interface software.

At any time before you initiate a load with the PC Software Loader when the Ethernet Interface is in the Software Load State, you can restart the Ethernet Interface by pressing the Restart pushbutton. Pressing this pushbutton will immediately cause the board to restart. If the reload has been initiated, see Appendix C, “Upgrading the Ethernet Interface Firmware,” for more information.

Restart and Enter Maintenance State: Pressing and holding the Restart pushbutton until the bottom two LEDs turn ON (approximately 10 seconds) forces a restart and requests entrance to the Maintenance state. Maintenance state must be invoked to change Advanced Parameters. While in Maintenance state, all Advanced Parameters revert to their default value. When the Restart pushbutton is pressed, all LEDs go out. After approximately 5 seconds, the STAT LED comes ON, then after approximately a total of 10 seconds have elapsed, the FDX LED also comes ON, to indicate that the Ethernet Interface will request entry to the Maintenance state. After the Restart pushbutton is released, all LEDs flash ON then power-up diagnostics run and the Ethernet Interface enters the Maintenance state.

Notes

If a Restart is performed, any data being transferred by the Ethernet Interface at that time will be lost.

The Restart pushbutton is not operable during the diagnostic phase of power-up. The Ethernet Interface is in diagnostic phase when the OK LED is BLINKING fast and other LEDs are OFF.

2-4 TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual– May 2002 GFK-1541B