Menno van den Berg wrote:
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Always terminate at the two ends of the line. In the schematic that would mean either at the master or on slave #1 and on the last slave.



If possible, create a line rather than a "star" network. Keep branches as short as possible if that's not feasible.

Thanks a lot Menno for your advice.I will start preparing the circuit. And tell me what does braches mean ,does it mean the distance between the MAX488 to the bus or something else...