Omega Vehicle Security Wireless Sensor System zSeries User Manual
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2.8 Network Communication Interfaces
2.8.1 10BASE-T RJ-45 Pinout
The 10BASE-T Ethernet network (RJ-45) system is used in the Coordinator 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 2.10 RJ45 Pinout
2.8.2 10BASE-T Crossover Wiring
When connecting the Coordinator directly to the
computer, the transmit data pins of the computer
should be wired to the receive data pins of the
Coordinator, and vice versa. The 10Base-T
crossover cable with pin connection assignments
are shown below.
Use straight through cable for connecting
the Coordinator to an Ethernet hub. The
ports on the hub are already crossed.
2.9 Thermocouple Wiring
The figure below shows the wiring hook-up for thermocouples. You may install 2
thermocouples.
Example: for Type K thermocouple, connect
the yellow wire to the "1 (+)" terminal (J1)
and the red wire to the "2 (-)" terminal.
Figure 2.12 Thermocouple Wiring and TC Wire Color Chart
ANSI Color Coding
TYPE
Lead (-)
Lead (+)
J
Red
White
K
Red
Yellow
T
Red
Blue
E
Red
Purple
N
Red
Orange
R
Red
Black
S
Red
Black
B
Red
Gray
C
Red
White
DIN J
Red
Blue
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
Figure 2.11 10BASE-T Crossover
Cable Wiring