Changes

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</b>

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         <td style="vertical-align:middle;">[[Image:Bw_nb.png|50px]]</td>

         <td style="vertical-align:middle;">[[Image:Bw_nb.png|50px]]</td>

         <td style="vertical-align:middle;">Swapping RS485 A and B lines (or RS232 Tx and Rx) of the external device and also not connecting ground together - May cause irreparable damage.</td>

         <td style="vertical-align:middle;">Swapping RS485 A and B lines (or RS232 Tx and Rx) of the external device and also not connecting ground together - May cause irreparable damage.</td>