Newland NLS-HR32 Series, User Manual

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Enter Setup
** Exit Setup 62
Hardware Auto Flow Control
If CTS flow control is enabled, the cradle determines whether to transmit data based on CTS signal level. When CTS signal
is at low level which means the serial port’s cache memory of receiving device (such as PC) is full, the cradle stops sending
data through serial port until CTS signal is set to high level by receiving device. If RTS flow control is enabled, whether the
cradle receives data or not is dependent on RTS signal level. If the cradle is not ready for receiving, it will set RTS signal to
low level. When sending device (such as PC) detects it, it will not send data to the cradle any more to prevent data loss.
If No Flow Control is selected, reception/transmission of serial data will not be influenced by RTS/CTS signal.
** No Flow Control
RTS Flow Control
CTS Flow Control
CTS/RTS Flow Control
Before enabling this feature, make sure that RTS/CTS signal lines are contained in RS-232 cable.
Without the signal lines, RS-232 communication errors will occur.