2

Verifying Proper Power-Up of the CMM321

Powering-up the Ethernet Interface

After configuring the CMM321, follow the procedure below to be sure it is operating correctly.

1.Turn power OFF to the PLC for 3–5 seconds, then turn the power back ON. This will initiate a series of diagnostic tests.

The OK LED will blink indicating the progress of power-up.

2.The LEDs will have the following pattern upon successful power-up. At this time the Ethernet Interface is fully operational and on-line.

LED

Ethernet Interface Online

OK

ON

 

 

LAN

ON or blinking

 

 

FDX

ON Solid if Full Duplex mode is active OFF

 

if Full Duplex mode is not active

 

 

STAT

ON

 

 

If STAT LED is OFF, check the PLC Fault Table. Alternatively, use the Station Manager LOG command as explained in GFK-1186, TCP/IP Ethernet Communications for the Series 90 PLC Station Manager Manual.

Problems During Power-up

If a problem is detected during power-up, the CMM321 may not transition directly to the Operational State. If the Interface does not transition to Operational, check the LED pattern on the Interface and refer to the following diagram and table for suggestions.

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

GFK-1541B

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Image 25
GE GFK-1541B manual Problems During Power-up, Led