Serial Interface Configuration - Printronix P6000L User's Reference Manual

detected, a NAK (15 Hex) character is transmitted to the host upon receipt of the ETX charac
ter. The host is expected to repeat the data transmission.
NOTE: In ETX/ACK and ACK/NAK, avoid sending ETX (03 Hex) in Bit Image serial
matrix graphics data.
PARITY ERROR - With an odd or even parity check in effect, the detected character error
shall be replaced with a question mark (?). If a parity error is detected, a NAK character is
transmitted to the host when the ACK/NAK protocol is selected. When parity is not checked,
parity errors are ignored and the characters are printed as received. Parity checking is a con
figuration option selected from the control panel.

Serial Interface Configuration

The printer is configured at the factory for the type of interface used, either parallel or serial.
However, certain user selectable configuration options are available. The following configura
tion parameters can be verified or changed as necessary to meet specific application require
ments:
Input buffer size (selected from the Application Compatibility menu)
n
Data protocol (XON/XOFF, ACK/NAK, etc.)
n
Data rate (BAUD rate selected from the control panel; external clock jumper se
n
lected)
Data word length and MSB function
n
Request to send behavior
n
Data terminal ready behavior
n
Reverse channel behavior
n
Protocol character assignment
n
These parameters are displayed under the Application Compatibility and Interface Compati
bility menus selectable from the control panel, except for external clock selection as noted
above. Refer to the Control Panel Switch Function diagram in the Configuration chapter for
detailed information on selecting the various parameter values.
Interfaces 7-7