8
2.4 Network Communication Interfaces
2.4.1 10Base-T RJ-45 Pinout
The 10BASE-T Ethernet network (RJ-45) system is used in the iServer for network
connectivity. The 10 Mbps twisted-pair Ethernet system operates over two pairs of wires.
One pair is used for receiving data signals and the other pair is used for transmitting data
signals. This means that four pins of the eight-pin connector are used.
Figure 2.6 RJ45 Pinout
2.4.2 10Base-T Crossover Wiring
When connecting the iServer directly to the computer, the transmit data pins of the
computer should be wired to the receive data pins of the iServer, and vice versa. The
10Base-T crossover cable with pin connection assignments are shown below.
Figure 2.7 10Base-T Crossover Cable Wiring
2.5 Industrial Probe
Choose one which gives the best signal
integrity-
1) Connect Probe’s Shield to RTN if Probe Housing
is not connected to Earth Ground.
OR
2) Connect Probe’s Shield to Earth Ground if Probe
Housing is not connected to Earth Ground.
Refer to
Section 2.3
for connector details.
Figure 2.8 Industrial Probe Wiring Hookup
BLACK(R
TN)
WHITE(CLK)
GREEN(DA
TA)
RED(VCC)
SHIELD(See Note)
N/C
METAL HOUSING
IS CONNECTED
TO SHIELD WIRE
Pin
Name
Description
1
+Tx
+ Transmit Data
2
-Tx
- Transmit Data
3
+RX
+ Receive Data
4
N/C
Not Connected
5
N/C
Not Connected
6
-Rx
- Receive Data
7
N/C
Not Connected
8
N/C
Not Connected
Use straight through cable for
connecting the iServer to an
Ethernet hub. The ports on the
hub are already crossed
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