Installation manual

Communication Features and Methods
153396 Revision D 1–17
This manual is for use by qualified installers only
Data Logging
The Xantrex GT250 inverter stores data values and software metrics for
debugging. The firmware maintains a data log located in the CCU2 non-volatile
memory with a capacity of 25840 32-bit words. The Xantrex GT250 records the
17 parameters listed below, and logs them into a circular buffer, such that the
earliest records shall be overwritten once the capacity of the buffer is exceeded.
The log capacity is 25840 / 20 = 1292 records (each record has 2 words for
timestamp and 18 words for parameters). Data logging requires the use of a PC
connection using the Xantrex GT View Graphic User Interface (GUI) software or
via the RS485/Modbus connection.
The following is the list of parameters which values shall be stored in the data
logging records:
• Inverter Vab
• Inverter Vbc
• Inverter Vca
• I Phase A
• I Phase B
• I Phase C
• Grid Freq
• Real Power
•PV Voltage
•PV Current
•PV Power
• System State
•Fault Code
• Intake air Temp.
• L Matrix Temp.
• R Matrix Temp.
• Analog input
• Fan speed control