Xantrex Battery Monitor Communication Interface Specifications

More documents

Recommendations

Info

The format of the state-of-charge output is basically the same as that of the voltage output only that the state-ofcharge output is hardware limited to 0x3E8 = 1000d which represents 100.0%. When we take a closer look at the time-to-go format in chapter 2.2.5, we see that this is in a hhh:mm format when we look at it decimally. This means that the two least significant decimal digits represent the number of minutes left and the rest of the decimal digits represent the number hours left. If for example the monitor outputs : 0x80 0x00 0x20 0x65 0x00 0x0B 0x2C 0xFF then shifting 0x0B left 7 positions and adding 0x2C would make 0x5AC which decimally represents 1452d (or 01452d). This number represents 14 hours and 52 minutes to go. The range is 0:00 to 240:00. So 24000d represents 240 hours and 0 minutes. Here's a C coded example of getting the hours and minutes (where d1, d2, and d3 are the three received data bytes): unsigned int TimeToGo, Hours, Minutes; TimeToGo = (d1
Xantrex is a registered trademark of Xantrex International. © 2003 Xantrex International. All rights reserved. Technical Bulletin: © July 2006 Xantrex International UNLESS SPECIFICALLY AGREED TO IN WRITING, XANTREX TECHNOLOGY INC. (“XANTREX”): (a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION. (b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSS OR DAMAGE, WHETHER DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK. Part number: 976-0133-01-01 Rev A Contact information: Phone: 1-800-670-0707 (toll-free in North America) Phone: 1-360-925-5097 (outside North America) Fax: 1-360-925-5143 Email: customerservice@xantrex.com Web: www.xantrex.com July 2006 976-0133-01-01 Rev A Page 25 of 25
Page 1 and 2: XBM Communication Interface Specifi
Page 3 and 4: Figure 4 : Message type See section
Page 5 and 6: 0x23 Backlight on - Turns on the ba
Page 7 and 8: 0x45 TimeToGo request - Request for
Page 9 and 10: 0x65 TimeToGo - Time to go until th
Page 11 and 12: 0x71 FunctionDump - Dump of all the
Page 13 and 14: 0x7F FirmwareVersion - Firmware ver
Page 15 and 16: F08 OverVoltage Alarm - Over-voltag
Page 17 and 18: F16 Voltage Prescaler - Voltage pre
Page 19 and 20: H02 Average Discharge (Ah) - Averag
Page 21 and 22: 3 PHYSICAL LAYER The XBM outputs it
Page 23: This would represent a voltage of:

Xantrex Battery Monitor Communication Interface Specifications

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?