Manual

Configuration
3–24 975-0679-01-01 Revision D
Xanbus Communications
The Xanbus Bit Rate parameter for the Conext ComBox has two possible values: 125
and 250 Kbps. The default value for the Xanbus Bit Rate is 250 Kbps. XW system
devices and components require a 250 Kbps bit rate. You cannot change the bit rate for
XW system devices and components.
When this setting is changed, reboot the Conext ComBox for the new setting to take
effect. See “Rebooting the Conext ComBox” on page 3–15.
Grid-Tie
Inverters
By default, the Xanbus bit rate is set to 250 Kbps for North American Grid-Tie inverter
models and 125 Kbps for European models. If you have a Grid-Tie inverter and want to
change the bit rate, make sure you follow the recommended procedure supplied by
Schneider Electric: Application Note, “Xantrex Grid-Tie Solar Inverter Baud Rate
Change Procedure” (976-0216-01-01). To obtain the Application Note, go to
www.schneider-electric.com, navigate to the product page and then to the downloads.
Important: Devices operating on the same bus must have the same bit rate. You
cannot operate devices with different bit rates on the same bus.
Important: Remote firmware upgrade using the Conext ComBox is not
supported on systems with a 125 Kbps bit rate. If you change the bit rate to 125
Kbps, then you will no longer be able to use the Conext ComBox to upgrade the
firmware on Grid-Tie inverters. You will have to upgrade each inverter in the
system using an RS-232 cable and a laptop.
Conext_ComBox_Owners_Guide.book Page 24 Monday, October 21, 2013 10:00 AM