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W&T
5 Ethernet interface
The Web-Thermometer incorporates an IEEE 802.3-compatible
network interface.
5.1 Link status
The Link status is indicated on the two LEDs built into the
RJ45 jack.
•
Link/Activity (green)
ON indicates a valid link to a hub or switch port. The LED
flashes when there is data traffic.
•
Speed (yellow)
ON indicates a 100MBit/s-link (100BaseT). OFF indicates
10MBit/s (10BaseT)
5.2 10/100BaseT on RJ45
The Web-Thermometer has a 10/100BaseT network interface
on a shielded RJ45 connector. The pin assignments shown
below correspond to an MDI interface, so that the connection
to the hub or switch is made using a max. 100m long 1:1
shielded patch cable.
Speed
Link/
Activity
1 2 3 4 5 6 7 8
The network connection is galvanically isolated with respect
to the supply voltage as well as the serial interface(s) for at
least 1,5kV
rms
.
Auto Negotiation: 10/100BaseT, Full/Half Duplex
The device is factory set to operate in Auto-Negotiation mode
on the network side. The data transmission speed and duplex
are automatically negotiated with the connected switch/hub
and set accordingly.
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