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AT Commands Reference Manual - wireless netcontrol GmbH

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Recommended H24 Initialization after Powerup<br />

RS232/USB Lines Setup<br />

H24 dynamically detects USB device attachment/Removal, while RS232 device considered<br />

"always attached".<br />

H24 allows using:<br />

1. Both USB and RS232 ports in parallel, when one of them may be used for control<br />

operations, while the second is used for data transfer.<br />

2. One port - either RS232 or USB.<br />

For details see <strong>AT</strong>+MCONN command.<br />

Start<br />

Off<br />

Check DSR Line<br />

On<br />

Activate DTR<br />

Activate RTS<br />

Off<br />

Check CTS<br />

On<br />

End<br />

Figure 4-2: RS232 Lines Setup<br />

4-2 H24 - <strong>AT</strong> <strong>Commands</strong> <strong>Reference</strong> <strong>Manual</strong> April 15, 2010

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