FANUC Robotics America GFK-1541B User Manual
Page 55
ries 90™ PLC User's Manual
–
May 2002
GFK-1541B
2
All LEDs are briefly turned ON whenever a restart is performed in the Operational state by
pressing and releasing the Restart pushbutton (described below). This allows you to verify that all
LEDs are operational.
See “Verifying Proper Power-Up of the Ethernet Interface” for more LED information.
Ethernet Restart Pushbutton
The Restart pushbutton serves four functions: LED test, Restart, Restart and enter Software Load
state, and Restart and enter Maintenance state. These four functions behave similarly in all states
except for the Software Load state. While in this state, pressing the pushbutton will cause an
immediate restart into the Operational state (without performing the LED test) if the software in
the Ethernet Interface has not been corrupted or erased. If the software has been corrupted or
erased, pressing the pushbutton will cause an immediate restart back into the Software Load state.
The following text describes Restart pushbutton behavior while not in the Software Load state.
Pressing the Restart pushbutton will disrupt Ethernet communications.
LED Test:
Any time the Restart pushbutton is released all the LEDs flash ON. You should
visually verify that all the LEDs go OFF and then ON at this time. Then the Interface performs
either a restart, a restart and enter Software Load state, or a restart and enter Maintenance state,
depending on the duration that you press the pushbutton.
Restart:
Pressing the Restart pushbutton momentarily (less than 5 seconds) requests a restart of
the Ethernet Interface. When the Restart pushbutton is pressed, all LEDs go out. When it is
released, all LEDs flash ON, then power-up diagnostics run, and the software on the Interface is
restarted into the Operational state.
Restart and Enter Software Load State:
Pressing and holding the Restart pushbutton until the
bottom LED (STATUS) 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 STATUS 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.
Note
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. See Appendix C, “Upgrading
the Ethernet Interface Firmware”, for more information.
Note
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.
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