Lanner FW-8896A User Manual page 44

Stop Bits: stop bits indicate the end of a serial data packet. The standard is 1 stop bit. Communication with slow
devices may require more than 1.
Flow Control: flow control can prevent data loss from buffer overflow. When sending data, if the receiving buffers
are full, a "stop" signal can be sent to stop the data flow. You may select "None" or "Hardware RTS/CTS", depending on
the circumstances.