Adamczewski AD-MM 400 Manual
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Contents
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8 Wiring diagrams8.1 RS-485The figure shows the configuration of the RS-485 interface with several nodes in aModbus segment according to the specification ’Modbus over serial line’.Figure 8.1: RS-485 with several subscribersITr A twisted, shielded cable must be used as a bus cableIDv Passive spur lines must be as short as possibleMasse The ground connection of all bus nodes must be connected to each other andconnected to the end of the bus, if possible at the bus masterLT The bus line must be terminated at both ends with terminating resistors of 120Ohm between lines A and B.27 |
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