Wiring the Inverter
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Communications Wiring for Monitoring a Single Inverter
You can view GT Inverter operational data on a personal computer using the
Xantrex GT Solar Inverter Viewer (GT-View), which you can download free at
www.xantrex.com.
To use GT-View, you must connect your computer’s serial port to the GT Inverter
RS-232 port (see Figure 3-10).
To connect your computer to the GT Inverter, you must use a serial DB9 straight
through cable.
The RS-232 connector on the GT is configured as follows:
• Pin 2: transmit
• Pin 3: received
• Pin 5: ground.
All other pins are unused.
To connect a single GT Inverter to a personal computer:
1. With DC and AC power disconnected from the inverter, remove the
communication port cover.
2. Plug the male end of the serial cable into the GT Inverter RS-232 port.
3. Pass the female end of the serial cable through the cable clamp on the
communication port cover.
4. Replace the communication port cover.
5. Plug the female end of the serial cable into your computer’s serial port. A
USB to DB9 converter (not supplied) may be required.
6. Restore DC and AC power to the inverter.
When power is restored to the GT Inverter, you can run GT-View on your
computer to monitor the inverter’s operation.
GT-View displays operational data such as power output in AC watts, lifetime
energy produced, and inverter temperature. Data is updated every two seconds
(default setting).
Note: In multiple installations, GT-View monitors only the inverter to which the computer is
connected. However, if the inverters are connected with a Xanbus cable, GT-View will display
total system wattage and the accumulated daily energy produced by all inverters. To monitor
multiple inverters, you require multiple DB9 cable connections (one per inverter) to your
computer.
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