Network Card User's Manual

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5.3 LED indication
(1) SN325
The S20LP-station is equipped with STN, ONL and SCAN LEDs, which indicate the
station modes.
STN ONL SCAN Station mode Remarks
Lit Lit Lit Online Scan / Message transmission is enabled
Not lit Online Scan transmission is disabled Message
transmission is enabled
Lit Not lit Not lit Offline Scan / Message transmission is disabled
Lit Blink Not lit Standby Transmission parameter is not written in
EEPROM.
Transmission information is standby start up.
Connection machines is abnormal.
T3H is not RUN mode.
Not lit Blink Blink Down Station number is illegal
(simultaneously)
Blink Not lit Down Jabber timeout
Not lit Not lit Down Receive buffer is overflow.
Target cycle time is shortage.
Blink Blink Down Watch dog timer error
(alternately)
(2) T2N
The S20LP-station is equipped with RUN and SONL LEDs, which indicate the station
modes.
SRUN SONL Station mode Remarks
Lit Lit Online Scan / Message transmission is enabled
Lit Not lit Offline Scan / Message transmission is disabled
Lit Blink Standby Transmission parameter is not written in EEPROM.
Transmission information is standby start up.
Connection machines is abnormal.
T2N is not RUN mode.
Not lit Blink Down Station number is illegal.
Jabber timeout.
Watch dog timer error.
Not lit Not lit Down Receive buffer is overflow.
Target cycle time is shortage.