3-3SectionUnit Components
24
Each communications device connected to the Ethernet network is allocated a
unique Ethernet address. For the Ethernet Unit, this Ethernet address is shown
on the right side of the Unit as a 12-digit hexadecimal number.
Ethernet address (12 digits)
Note The Ethernet address can also be checked using the FINS command, CON-
TROLLER DATA READ. (Refer to 11-3-2 CONTROLLER DATA READ.)
3-3-2 Indicators
The status of the indicators show the operating status of the Unit.
Indicator Color Status Meaning
RUN Green
Not lit • Operation stopped.
• Hardware error.
Lit Normal operation.
P/S Green
Not lit Power is not being supplied to the transceiver.
(Power Supply)
Lit Power is being supplied to the transceiver.
ERC Red
Not lit Unit normal.
(Ethernet Unit Error)
Lit • Node number not between 1 and 126.
• A hardware (e.g., internal memory) error has occurred.
Flashing An illegal IP address has been set. With automatic address
generation, the rightmost two digits of the IP address do not match the
node number. (Refer to 3-4-3 Setting the Local IP Address.)
ERH Red
Not lit PC normal.
(PC Error)
Lit • A PC error has occurred.
• An error exists in I/O table, unit number, system data, or routing table
settings.
SD Yellow
Not lit Not sending data. (Ready to send.)
(Send Data)
Lit Sending data.
RD Yellow
Not lit Not receiving data. (Ready to receive.)
(Receive Data)
Lit Receiving data.
TCP Yellow
Not lit None of the eight TCP sockets provided for socket services is in use.
(TCP Socket in Use)
Lit At least one of the eight TCP sockets provided for socket services is
in use.
FTP Yellow
Not lit FTP server on stand-by.
(File Server Service)
Lit FTP server operating.
TS Yellow
Not lit Not running internode test.
(Internode Testing)
Lit Running internode test.
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