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Serial Communications
The HYDRA-X10 module also contains a fully operational USB to UART serial communications link the user
can utilize to communicate with the PAC5210's serial port. This connection is enabled by default at the
factory. In the event the user desires to utilize a different serial communications source, the S2 DIP switch
must be configured to separate the USB 2 UART resource from the PAC5210 microcontroller.
Figure 5 depicts how to flip the S2 DIP switches 1 and 2 depending on which UART serial communications
source is to be employed.
Figure 5 S2 DIP Switch UART Channel Selection
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Rev 1.0 June 2014
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