Omega Speaker Systems Dual Thermocouple Over the Internet iSE-TC - Manual (Page 13)

9
2.5 Network Communication Interfaces
2.5.1 10Base-T RJ-45 Pinout
The 10BASE-T Ethernet network
(RJ45) system is used in the iSE 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
2.5.2 10Base-T Crossover Wiring
When connecting the iSE directly to the computer’s network port, the transmit data pins of the
computer should be wired to the receive data pins of the iSE, and vice versa. The 10Base-T
crossover cable with pin connection assignments are shown below.
Use straight through cable for connecting the iSE to an Ethernet hub. The ports on
the hub are already crossed.
2.6 Relay and I/O Contact Wiring Connections
To access the Relay and I/O Contact Connectors you
must remove the cover, refer to Section 2.4.
Figure 2.8 Relay and I/O Contact Connections
2.7 DC Power Input Wiring Connections
A universal ac power adapter with 9 Vdc output is included with your unit. It can be plugged in
at the bottom of unit (See Figure 2.3).
The unit can also be powered on the Relay Connector Pin 1 and Pin 2 (See Figure 2.8).
When using these pins to power the iSE, make sure the power adapter is not used.
1 5 4 3 2 6
COM1 COM2
9 Vdc
RTN NO2 NO1
RELAY 2 RELAY 1
1 4 3 2
IN1 IN2
RTN
OUTPUT
INPUTS
Figure 2.7 10Base-T
Crossover Cable Wiring
It is recommended that you
ground your unit by
connecting a wire to the
Ground/Return position of the
connector or by wrapping a wire
around the case’s bottom screw.
Refer to Figure 3.1 for location.
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