Frequently Asked Question

Firmware for Morningstar Meterbus and Serial Modules
Last Updated 2 years ago

When using either a Meterbus or Serial SiteMonitor expansion module to monitor a MorningStar charge controller, the firmware in the module must match the charge controller it is monitoring.  

In order to assist our customers who need this firmware, we have attached the firmware files to this FAQ entry.   You will need to select the firmware file which matches the charge controller you are using, and then use the procedure found at to complete the upgrade.   If you are monitoring multiple charge controllers, be sure to upgrade each expansion module with the correct firmware for the specific charge controller you are connecting to that particular module.

Please note that on all TriStar charge controllers you must use a serial module and the serial port.  On all others you must use a meterbus module and the meterbus port.

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