Siemens DataNET Hub (DNH) Uživatelský manuál stáhnout pdf (Strana 72)

64 • Data Communications Setup 2000585-001

System Status LEDs, Continued

There are four Ethernet Link Status LEDs.

Link Active LED is Green (on) when a link is established success-

fully between the Ethernet port and associated Ethernet

Hub or repeater.

If LED is OFF check for a bad cable, faulty wiring, or

loose connections.

Rx Rx LED blinks when there is data reception on the

Ethernet port.

Tx Tx LED blinks when the Ethernet port transmits a mes-

sage.

Collision Collision LED blinks when there is a collision on the

Ethernet link. A collision is a normal event on an

Ethernet link and occurs when both sides of the link

attempt to transmit at the same time. Excessive colli-

sions indicate a problem with the network.

Could be a cabling problem or bad network interface

board.

The cross link status LED is red when no link is established between the

two DataNET Hub halves, and is green when a connection is detected.

Usually a red indication is caused by the absence of the cross link cable

or a faulty connection.

Ethernet Port LEDs

Cross Link Status

LED

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 96 97

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Siemens DataNET Hub (DNH) Uživatelský manuál Strana 72