LSIS SV-iS7 series - Setting a Frequency Reference Via RS-485 Communication

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3.5.4 Setting a Frequency Reference via RS-485 Communication
Control the inverter with upper-level controllers, such as PCs or PLCs, via RS-485
communication. Set the Frq (Frequency reference source) code (code 07) in the DRV
group to 6 (Int 485) and use the RS-485 signal input terminals (S+/S-/SG) for
communication.