XML communication

You can view the XML monitor in the PC software any time: Click Utilities > XML Monitor. From this window, you can also send XML commands.

XML outputs

Under 8100 > Outputs you can select variables to output to an external data logger or terminal program, either over RS-232 serial or Ethernet communication. The variables available are essentially the same, the difference being that you do not have geographical (GPS) data available over RS-232 because the GPS accessory occupies the RS‑232 port.

There are several options available when configuring the outputs:

Remove XML from data: Select this to remove the markup from the data stream. The resulting data set is a data stream where each value is separated by a space.

Add CRC to data: Select this to enable the Cyclic Redundancy Check (CRC). CRC is an algorithm that is used to verify the integrity of the data. Before each data packet is sent by the LI-8100A, a CRC is calculated (pre-transmission) for that packet, and then appended to the packet. When the client (e.g. the computer) receives the packet, it strips off the appended CRC and calculates its own CRC (post transmission). If the two CRC values match, it is assumed that the packet was transmitted correctly. When CRC values are appended to the data packet, the value is automatically marked up. A typical CRC will appear as


Disable the Add CRC to data check box to remove CRC from the data.

Terminal program

You can also communicate with the LI-8100A using a command line program such as Tera Term. When you communicate with the LI-8100A with a Transmission Control Protocol (TCP) connection, connect with the instrument using the IP Address. The LI-8100A uses port number 1562.

If you connect with the RS-232 serial port, simply select the COM port that you used to connect your LI-8100A.