317 OPTION31OPTIONChapter77-3. RS-485 interfaceThe RS-485 interface is used to read out the indicated value and the state of the F331 and to writeset values into the F331. It is convenient for connecting the F331 with a PLC/programmabledisplay, etc., to perform processing, such as controlling, aggregating, and recording.Connector: M3 screw type terminal block (four-pole)* Compatible solderless terminal within 5.9mmTightening torque 0.6N•m■Communication specificationsStandardsMessage format: Modbus-RTU, UNI-FormatSignal level: RS-485-compliant, two-wireTransmission distance: Approx. 1kmTransmission mode: Asynchronous, half-duplex communicationTransmission speed: 1200, 2400, 4800, 9600, 19200, 38400bps selectableNumber of connectable units: Max. 32 (including one master)Bit configuration: Start bit 1 bitLength of character 7 or 8 bits selectable (8 bits for Modbus-RTU)Stop bit 1 or 2 bits selectableParity bit None, odd, or even selectableCode: Binary (for Modbus-RTU)ASCII (for UNI-Format)B+Rt.A-S.G.
