Omega Engineering i.BTX-M manual Network Communication Interfaces 1 10Base-T RJ-45 Pinout

2.5 Network Communication Interfaces

2.5.1 10Base-T RJ-45 Pinout

The 10BASE-T Ethernet network (RJ45) 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

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

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.

It is recommended that you ground your unit by connecting a wire to the Ground/Return position of the relay connector. Or by wrapping a wire around the mounting tab screw and tightening a lock washer so that it embeds itself into the metal of the mounting tab.

Figure 2.6 10Base-T

Crossover Cable Wiring

		RELAY 2		RELAY 1
6	5	4	3	2	1
RTN	9 Vdc	NO2	COM2	NO1	COM1

2.7 Running on Battery Power

Figure 2.7 Relay Connections

The battery and S5 jumper are 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.

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