USR-K7 User Manual www.usriot.comJinan USR IOT Technology Limited 47 / 120 inquiry@usriot.com2. Data: the length of the data, range from 5~83. Stop: can be set from 1~24. Parity: none, odd, even, mark, space.Via setting serial port parameters, keep consistent with the device to make sure communicating.4.3.2. Flow ControlDiagram 4.3.2-1 Serial Flow ControlFlow control: the way for serial port flow control, users can choose to enable 485 or not, control the receive andsend for 485, 3010 and later default enable 485 control mode, under the condition that no hardware flow control,enable 485.1. NONE: default serial port mode, under this mode, 3010 and later version enable 485