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8
Operation
8.1
Starting the Program
Operation
This section details the operation of the bq20z70 EVSW software. Note: the EV2300 driver does not
support Windows Sleep or Hibernate. In case there is a problem communicating with the EV2300 or the
EVM, first unplug the USB cable then plug it back in. If the problem persists, check whether the EVM is in
Shutdown mode. The bq20z70 can be waken up by momentarily applying a voltage higher than 5.5V (but
less than 25V) at Pack+ pin of the EVM.
With the EV2300 and the bq20z70 EVM connected to the computer, run bq20z70 EVSW from the Start |
Programs | Texas Instruments | bq20z70 EVSW menu sequence. The SBS Data screen appears. Data
begins to appear once the <Refresh> (single time scan) button is clicked, or when the <Keep Scanning>
check box is checked. To disable the scan feature, deselect <Keep Scanning>.
The continuous scanning period can be set via the |Options| and |Set Scan Interval| menu selections. The
range for this interval is 0 ms to 65535 ms. Only items that are selected for scanning are scanned within
this period.
The bq20z70 EVSW provides a logging function which logs the values that were last scanned by EVSW.
To enable this function, select the Start Logging button; this causes the Keep Scanning button to be
selected. When logging is Stopped, the keep scanning button is still selected and has to be manually
unchecked.
The logging interval are specified under the |Options| menu with the maximum value of 65535
milliseconds. The Log interval cannot be smaller than the scan interval because this results in the same
value being logged at least twice.
12
bq20z70EVM-001 SBS 1.1 Impedance Track™Technology
SLUU242A – May 2006 – Revised June 2006
Enabled Battery Management Solution Evaluation Module
