7
2.5 Network Communication Interfaces
2.5.1 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.
2.5.2 10Base-T Crossover Wiring
When connecting the iServer directly to the computer’s
network port, 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.
Use straight through cable for connecting the
iServer to an Ethernet hub. The ports on the
hub are already crossed.
2.6 Relay Wiring Connections
To access the Relay Connector you must remove
the cover, refer to
Section 2.4.
2.7 Running on Battery Power
Battery and S5 jumper installed: if there is a power
outage the iServer board will be fully functional
including the LCD backlight “ON” for approximately
1 hour. You need to make sure that the
LCD/PWR
field on the Configuration page of the iServer is set
to
UPS
(see
Section 4.3.5.F
)
Battery installed and S5 jumper in storage position (Factory Default): if there is a power
outage the LCD Backlight and iServer Ethernet board will not run, but the unit will be
collecting and storing data for approximately 10 days.
When you first connect the battery, without the AC power adaptor, the unit will be in
“Sleep Mode”, in order to save power, and the LCD will display “Flash Standby”
(provided that S5 jumper is not installed). When battery is installed, plug the AC adaptor
into unit and push the Flash Reset Button (refer to
Figure 2.3
or
Figure 2.4
). Unit is now
ready to be configured for recording the data. Also, if the AC adaptor is unplugged after
configuring the unit, it will be ready for recording data.
If you want to move the unit to a different location, remove AC adaptor and press the
Flash Reset button. Repeat the steps in the above paragraph.
6
2
3
4
5
1
NO1
NO2
9 Vdc
RT
N
COM2
COM1
RELAY 2 RELAY 1
Figure 2.7 Relay Connections
Figure 2.6 10Base-T
Crossover Cable Wiring
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 2.5 RJ45 Pinout