Intermec PF4i 사용자 설명서

transmission is held up awaiting an ACK character from the receiving 
unit. By default, ENQ/ACK is disabled.

XON/XOFF is a protocol where the communication is controlled by 
the control characters XON (ASCII 17 dec.) and XOFF (ASCII 19 dec.) 
being transmitted on the same line as the data. XON/XOFF can be 
enabled/disabled separately for data received from the host by the printer 
(printer sends XON/XOFF) and for data transmitted to the host from 
the printer (host sends XON/XOFF). 

XOFF is sent from the printer when its receive buffer is fi lled to 75%, 
and the transmission from the host is held, waiting for an XON charac-
ter. When enough data have been processed so the receive buffer is fi lled 
only to 50%, the printer sends an XON character and the host resumes 
transmitting data. The same principles apply to XON/XOFF sent by the 
host, even if the percentage fi gure may differ. By default, XON/XOFF is 
disabled for data in both directions.

Selects the character(s) transmitted from the printer to specify the switch-
ing to a new line. There are three options:

•  CR/LF 

ASCII 13 + 10 dec. (default)

•  LF   

ASCII 10 dec.

•  CR   

ASCII 13 dec.   

The receive buffer stores the input data before processing. Default size is 
1024 bytes.

The transmit buffer stores the output data to be transmitted before trans-
mission. Default size is 1024 bytes.