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''Note :'' In case of communication errors, swapping the 'A+' and 'B-' connections might resolve the issue.
 
''Note :'' In case of communication errors, swapping the 'A+' and 'B-' connections might resolve the issue.
 
[[File:Modbus p1 dongle -rs485.png|frameless|alt=|left|400x400px]]  
 
[[File:Modbus p1 dongle -rs485.png|frameless|alt=|left|400x400px]]  
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