Panasonic FP2 ET-LAN, Technical Manual

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13-4
13.2 What to Do If an Error Occurs
13.2.1 If the Alarm "ALM" LED Lights on the ET-LAN Unit
Situation
The watchdog timer is activated to alert the user of a problem with ET-LAN unit.
Solution
-
Turn the power supply off and then on again.
-
If the "ALM“ LED lights again, there may be a problem with the unit.
-
If the “ALM“ LED goes out after the power supply is turned off and then on again, the problem may
have been caused by noise or another temporary phenomenon. Continue operation and watch for
further signs of trouble.
13.2.2 If the "E1" LED on the ET-LAN Unit Lights or Flahses
Situation
Lighted: Initialization, open or communication processing was completed, but an error occurred.
Flashing: An error occurred in the communication control unit.
Solution (1)
Use the error log reading program to read the erro log. (See page 12-5.)
Solution (2)
Take the appropriate action, based on the contents of the error log. (See page 12-7.)
Key Point:
The following will cause aborted processing:
-
An incorrect IP address setting or station number setting
-
Processing was not carried out in the sequence of initialization
→
open
→
communication processing.
-
The MEWTOCOL communication format was incorrect.
13.2.3 If the “E2” LED on the ET-LAN Unit Lights or Flashes
Situation
Lighted: A system error has occurred in the ET-LAN unit itself.
Flashing: Something has occurred to which the user should be alerted, because it may be a potential
problem.
Solution (1)
Use the error log reading program to read the erro log. (See page 12-5.)
Solution (2)
Take the appropriate action, based on the contents of the error log. (See page 12-7.)
If a system error has occurred, turn the power supply off and then on again. If the error still occurs,
please contact your dealer.
Key Point:
The “E2" LED will also light in the following cases:
-
If the “ALM” LED is lighted.
-
If an error occurred in a test mode.