2

 

 

LED Pattern

Where Stopped

 

Possible Cause

 

Corrective Actions

 

 

 

 

 

 

 

 

OK (OFF)

A

Fatal Hardware Error.

ƒ

Make sure the PLC has power.

 

 

 

ƒ Examine PLC Fault Table for clues.*

 

LAN (OFF)

 

 

 

 

 

 

 

ƒ

Recheck PLC Programmer

 

FDX (OFF)

Hardware

 

 

 

 

 

 

configuration.

 

STAT (OFF)

 

 

 

 

Failure

 

 

 

 

 

 

ƒ Power off baseplate, inspect the

 

 

 

 

 

 

 

 

 

 

 

 

 

Interface for loose components,

 

 

 

 

 

 

 

reseat the Interface, and Restart.

 

 

 

 

 

 

ƒ Try a different slot.

 

 

 

 

 

 

ƒ If the problem persists, replace the

 

 

 

 

 

 

 

Interface or PLC hardware.

 

OK (Slowblink)

B

ƒ

Restart pushbutton until

ƒ

Connect a PC Software Loader and

 

 

bottom LED turns ON.

 

load new software. See Appendix C.

 

LAN (Slowblink)

 

 

 

 

 

ƒ

Station Manager LOAD

ƒ

Cycle power or press Restart

 

FDX (Slowblink)

Software

 

 

command issued.

 

pushbutton again for less than 5

 

STAT (Slowblink)

 

 

 

Loader

ƒ

Software corrupt.

 

seconds to restart the Interface and

 

 

 

 

 

 

 

clear the load request.

 

All LEDs blink in unison.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OK (Slowblink)

C

ƒ

Did not configure slot using

ƒ

Use PLC Programmer configuration

 

 

PLC Programmer.

 

software to configure the Interface

 

LAN (OFF)

 

 

 

 

 

ƒ New CPU with no

 

then store the configuration to the

 

FDX (OFF)

 

 

 

Waiting for

 

configuration.

 

PLC CPU.

 

STAT (OFF)

Configuration

ƒ

CPU not communicating

ƒ

Make sure Interface is in the correct

 

 

 

from PLC

 

with Ethernet Interface

ƒ

slot on the baseplate.

 

 

 

 

ƒ

(Condition can last a

Power cycle the PLC.

 

 

 

 

 

maximum of 2 minutes.)

ƒ

Clear faults and Restart Interface.

 

OK (Slowblink)

D

Interface’s IP address has not

ƒ

Use PLC Programmer to configure

 

been configured or has been

 

the Interface with a non-zero IP

 

//LAN (ON/Traffic/OFF)

 

 

 

 

configured as 0.0.0.0.

 

address.

 

FDX (OFF/Slowblink)

 

 

 

Waiting for IP

 

 

ƒ

Use a BOOTP server to provide

 

STAT (Slowblink)

Address

 

 

 

Interface with a non-zero IP address.

 

OK and STAT blink in unison.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OK (Slowblink)

E

ƒ

Restart pushbutton pressed

ƒ

If you did not intend to enter

 

 

until bottom two LEDs turn

 

Maintenance press the Restart

 

//LAN (ON/Traffic/OFF)

 

 

 

 

 

 

ON.

 

pushbutton for less than 5 seconds.

 

FDX (Slowblink)

 

 

 

 

Maintenance

ƒ

Station Manager MAINT

 

This clears the Maintenance request.

 

/

STAT (ON/OFF)

 

 

command issued.

ƒ

Examine PLC Fault Table for clues.*

 

 

 

 

ƒ

Internal System Error when

ƒ

If you need to use the Station

 

OK and SER blink in unison.

 

 

Interface was Operational

 

Manager to troubleshoot a problem,

 

 

 

 

 

caused a restart and

 

see GFK-1186, TCP/IP Ethernet

 

 

 

 

 

entrance into Maintenance.

 

Communications for the Series 90

 

 

 

 

 

 

 

PLC Station Manager Manual.

 

OK (ON)

F

ƒ

If the LAN LED is OFF,

ƒ

Connect cable and transceiver

 

 

the problem may be:

 

properly. Replace transceiver.

 

//LAN (ON/Traffic/OFF)

 

 

 

 

 

ƒ

Network cable or

ƒ

Terminate network cable properly.

 

/

FDX (ON/OFF)1

Operational

 

 

transceiver not connected to

ƒ

Set SQE ON on transceiver in accord

 

/

STAT (ON/OFF)

 

ƒ

Interface or bad transceiver.

 

with manufacturer’s instructions.

 

 

 

 

Network cable not

 

 

 

 

 

 

 

terminated properly.

 

 

 

 

 

 

ƒ SQE not enabled on

ƒ

 

 

 

 

 

 

transceiver.

Examine PLC Fault Table to find out

 

 

 

 

ƒ If the STAT LED is OFF,

 

why the STAT LED is OFF. *

1

FDX should be ON if Full

 

 

an exception condition has

 

 

 

 

 

occurred.

 

 

Duplex mode is activated;

 

 

 

 

 

 

 

 

 

otherwise, it should be OFF.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Identify the PLC fault message using the PLC Programmer, then refer to Table 8-1 in Chapter 8 for corrective actions.

2-14

TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual– May 2002

GFK-1541B

Page 27
Image 27
GE GFK-1541B manual Waiting for IP