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How can I set Modbus communication time-out value for the RS-485 port of the ASDA-B2 Servo Drive? Even if I set it in P3-04, I see the time-out alarm (AL020).

1–2 minutes

P3-04 is for the RS-232 communication port time-out setting. P3-10 is a parameter to set the time-out value for the RS-485. It may seem reserved in the recent user manuals, which will be updated soon. The unit of the time is the same with P3-04 as seconds.