New Line; Receive Buffer; Transmit Buffer - Intermec EasyCoder 501 XP Installation & Operation Manual

Chapter 7 Setting Up the Printer
Setup Parameters, cont'd.
Serial Communication,
cont'd.
56
• ENQ/ACK
In this protocol, the communication is controlled by the special
characters ENQ (ASCII 05 dec.) and ACK (ASCII 06 dec.) being
transmitted on the same line as the data. The sending unit transmits
ENQ at regular intervals. If the response ACK is not received
the transmission is held up awaiting an ACK character from the
receiving unit. By default, ENQ/ACK is disabled.
• XON/XOFF
In this protocol, the communication is controlled by the special
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
by 75%, and the transmission from the host is held up awaiting
an XON character. When enough data have been processed that
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 may differ.
By default, XON/XOFF is disabled for data both ways.

New Line

Selects the character(s) transmitted from the printer to specify the
switching to a new line. There are three options:
• CR/LF ASCII 13 dec. + ASCII 10 dec.
• LF ASCII 10 dec.
• CR ASCII 13 dec.

Receive Buffer

The receive buffer stores the input data received on the serial channel
before processing. Default size is 300 bytes.

Transmit Buffer

The transmit buffer stores the output data received on the serial
channel before transmission. Default size is 300 bytes.
Intermec EasyCoder 501 XP – Installation & Operation Ed. 4
(default)