User`s manual

Serial Parameters - RS-232 & RS-422
83
Values: XON/XOFF, ETX/ACK, ACK/NAK, SERIES 1, 1 CH, or
SERIES 1, 2 CH, DTR.
This parameter must be set to match your host computer.
The actions for each of the seven possible parameter values are as
follows:
XON/XOFF (Default)
When you select the XON/XOFF protocol, the printer does the
following:
• When not ready to receive data (i.e., offline or full data buffer),
the printer sends ASCII code DC3 (Device Code 3, hex 13,
XOFF) to the host.
• When ready to receive data (i.e., online and empty data buffer),
the printer sends ASCII code DC1 (Device Code 1, hex 11,
XON) to the host.
NOTE: XON means “transmit on;” XOFF means “transmit off.”
ETX/ACK
The ETX/ACK protocol enables the flow of communication to the
printer by sending a block of data, and ending the block with an End
of Text (ETX) signal. When the printer receives the ETX signal, it
acknowledges the signal, thereby indicating it has received the
entire block of data.
ACK/NAK
The ACK/NAK protocol gives the printer a means to acknowledge it
has either accepted a transmission (ACK) or did not receive a
transmission (NAK).
SERIES 1, 1 CH
When you select the Series 1 with 1 Character protocol, the printer
does the following:
• When not ready to receive data (buffer 75% full), the printer
sends a buffer full response character to the host.