GE GFK-1541B - Manual (Page 41)

2-28 TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual – May 2002 GFK-1541B
2
LED Pattern Where Stopped Possible Cause Corrective Actions
❍ EOK (OFF)
❍ LAN (OFF)
❍ STAT (OFF)
A
Hardware
Failure
Fatal Hardware Error.
ƒ Make sure the PLC has power.
ƒ Examine PLC Fault Table for
clues.
ƒ Recheck PLC Programmer
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)
✫ LAN (Slowblink)
✫ STAT (Slowblink)
All LEDs blink in unison.
B
Software
Loader
ƒ Restart pushbutton until the
bottom LED turns ON.
ƒ Station Manager LOAD
command issued.
ƒ Software corrupt.
ƒ Connect a PC Software Loader
and load new software. See
Appendix C.
ƒ Cycle power or press Restart
pushbutton again for less than 5
seconds to restart the Interface
and clear the load request.
✫ EOK (Slowblink)
❍ LAN (OFF)
❍ STAT (OFF)
C
Waiting for
Configuration
from PLC
ƒ Did not configure slot using
the PLC Programmer.
ƒ CPU not communicating
with Ethernet Interface.
ƒ (Condition can last a
maximum of 2 seconds.)
ƒ Use the PLC Programmer
configuration software to
configure the Interface then store
the configuration to the PLC
CPU.
ƒ Power cycle the PLC.
ƒ Clear faults and Restart Interface.
✫ EOK (Slowblink)
●
/ ✲/❍ LAN
(ON/Traffic/OFF)
✫ STAT (Slowblink)
EOK and STAT blink in unison.
D
Waiting for IP
Address
Interface’s IP address has not been
configured or has been configured
as 0.0.0.0.
ƒ Use the PLC Programmer to
configure the Interface with a
non-zero IP address.
ƒ Use a BOOTP server to provide
Interface with a non-zero IP
address.
✫ EOK (Slowblink)
●
/ ✲/❍ LAN (ON/Traffic/OFF)
●
/ ❍ STAT(ON/OFF)
E
Maintenance
ƒ Restart pushbutton until the
bottom two LEDs turn ON.
ƒ Station Manager MAINT
command issued.
ƒ Internal System Error when
Interface was Operational
caused a restart and
entrance into Maintenance.
ƒ If you did not intend to enter
Maintenance press the Restart
pushbutton for less than 5
seconds. This clears the
Maintenance request.
ƒ Examine PLC Fault Table for
clues.
ƒ 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)
●
/ ✲/❍ LAN (ON/Traffic/OFF)
●
/ ❍ STAT(ON/OFF)
F
Operational
If the LAN LED is OFF, the
problem may be:
ƒ Network cable not
connected or transceiver not
connected to Interface or
bad transceiver.
ƒ Network cable not
terminated properly.
ƒ SQE not enabled on
transceiver.
If the STAT LED is OFF, an
exception condition has occurred.
ƒ Connect cable and transceiver
properly. Replace transceiver.
ƒ Terminate network cable
properly.
ƒ Set SQE ON on transceiver in
accord with manufacturer’s
instructions.
ƒ Examine PLC Fault Table to find
out why the STAT LED is OFF.