PWS100 Present Weather Sensor - Campbell Scientific
PWS100 Present Weather Sensor - Campbell Scientific
PWS100 Present Weather Sensor - Campbell Scientific
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Section 7. Operation<br />
FIGURE 7-20. View / adjust calibration menu<br />
Option 9 of the configuration menu gives the TERMINAL MODE menu (see<br />
Figure 7-21). Choose whether CRC16-CCITT checksum verification is<br />
required.<br />
NOTE<br />
When terminal mode is set to 1 all terminal commands need a<br />
CRC. For example “open 0;d2d5” a semi-colon is used to<br />
indicate start of CRC in 4 byte ASCII hex. The CRC is<br />
calculated either from the start of new line or after a [STX] up to<br />
but not including the semicolon. ETX can follow the CRC if<br />
required. The valid CRC can be read back for any command if<br />
the CRC after the semi-colon is replaced with four `?’. For<br />
example “open 0;????” the response will be<br />
[CRLF]CRC>D2D5
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