GE GFK-1541B manual Software

2

	LED Pattern		Where Stopped		Possible Cause		Corrective Actions
❍ EOK		(OFF)	A	Fatal Hardware Error.		ƒ	Make sure the PLC has power.
❍ LAN (OFF)						ƒ Examine PLC Fault Table for
							clues.
❍	STAT (OFF)		Hardware
						ƒ	Recheck PLC Programmer
			Failure				configuration.
						ƒ Power off baseplate, inspect the
							Interface for loose components,
							reseat the module, and Restart.
						ƒ If the problem persists, replace
							the PLC hardware.
✫	EOK	(Slowblink)	B	ƒ	Restart pushbutton until the	ƒ	Connect a PC Software Loader
					bottom LED turns ON.		and load new software. See
✫	LAN (Slowblink)
				ƒ	Station Manager LOAD		Appendix C.
✫	STAT (Slowblink)		Software			ƒ
					command issued.		Cycle power or press Restart
All LEDs blink in unison.			Loader	ƒ	Software corrupt.		pushbutton again for less than 5
							seconds to restart the Interface
							and clear the load request.
✫	EOK	(Slowblink)	C	ƒ	Did not configure slot using	ƒ	Use the PLC Programmer
					the PLC Programmer.		configuration software to
❍	LAN	(OFF)
				ƒ	CPU not communicating		configure the Interface then store
❍	STAT (OFF)
			Waiting for		with Ethernet Interface.		the configuration to the PLC
			Configuration	ƒ	(Condition can last a	ƒ	CPU.
			from PLC		maximum of 2 seconds.)		Power cycle the PLC.
						ƒ Clear faults and Restart Interface.
✫ EOK		(Slowblink)	D	Interface’s IP address has not been		ƒ	Use the PLC Programmer to
●/✲/❍ LAN		(ON/Traffic/OFF)		configured or has been configured			configure the Interface with a
				as 0.0.0.0.			non-zero IP address.
✫	STAT (Slowblink)
			Waiting for IP			ƒ	Use a BOOTP server to provide
EOK and STAT blink in unison.			Address				Interface with a non-zero IP
							address.
✫	EOK (Slowblink)		E	ƒ	Restart pushbutton until the	ƒ	If you did not intend to enter
					bottom two LEDs turn ON.		Maintenance press the Restart
●/✲/❍	LAN (ON/Traffic/OFF)
				ƒ	Station Manager MAINT		pushbutton for less than 5
●/❍ STAT(ON/OFF)
			Maintenance		command issued.		seconds. This clears the
				ƒ Internal System Error when			Maintenance request.
						ƒ	Examine PLC Fault Table for
					Interface was Operational
					caused a restart and	ƒ	clues.
					entrance into Maintenance.		If you need to use the Station
							Manager to troubleshoot a
							problem, see GFK-1186, TCP/IP
							Ethernet Communications for the
							Series 90 PLC Station Manager
							Manual.
●EOK (ON)			F	If the LAN LED is OFF, the
				problem may be:
●/✲/❍	LAN (ON/Traffic/OFF)
				ƒ	Network cable not	ƒ	Connect cable and transceiver
●/❍ STAT(ON/OFF)			Operational
					connected or transceiver not		properly. Replace transceiver.
					connected to Interface or	ƒ	Terminate network cable
					bad transceiver.
							properly.
				ƒ	Network cable not
						ƒ Set SQE ON on transceiver in
					terminated properly.
							accord with manufacturer’s
				ƒ SQE not enabled on
							instructions.
					transceiver.
				If the STAT LED is OFF, an		ƒ	Examine PLC Fault Table to find
				exception condition has occurred.			out why the STAT LED is OFF.

2-28 TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual– May 2002 GFK-1541B