Word Length; Request To Send - Printronix P7000 User Manual

Chapter 4
HOST INTERFACE - P7000HD

Word Length

Sets the length of the serial data word. The length of the data word can be set
to 7 or 8 bits, and must match the corresponding data bits setting in the host
computer.
Stop Bits 1
Sets the number of stop bits in the serial data word. Either one or two stop bits
can be selected. The setting must match the corresponding stop bit setting in
the host computer.
Parity
Set for odd parity, even parity, mark, sense, or no parity. The setting must
match the corresponding parity setting in the host computer.
Data Term Ready
This configuration is part of hardware flow control and determines when the
Data Terminal Ready (DTR) signal is generated. This signal indicates if the
printer is ready to receive data.
•
True (default). Continuously asserts the DTR signal.
•
On Line and BNF (buffer not full). Asserts the DTR signal when the
printer is online and the internal serial buffer is not full.
•
Off Line or BF (buffer full). Asserts the DTR signal when the printer is
offline or the internal serial buffer is full.
•
On Line. Asserts the DTR signal when the printer is online.
•
False. Never asserts the DTR signal.

Request To Send

This configuration is part of hardware flow control and determines when the
Request to Send (RTS) signal is generated. This signal indicates whether or
not the printer is ready to receive data.
•
On Line and BNF (default). Asserts the RTS signal when the printer is
online and the internal serial buffer is not full.
•
Off Line or BF. Asserts the RTS signal when the printer is offline or the
internal serial buffer is full.
•
On Line. Asserts the RTS signal when the printer is online.
•
False. Never asserts the RTS signal.
•
True. Continuously asserts the RTS signal.
Buffer Size in K
This option configures the amount of memory allocated for the serial port
buffer. You may specify between 1 and 16 Kbytes, in 1-Kbyte increments.
The default is 16K.
NOTE: If you select a baud rate that is 19200 or greater, you may need to
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increase the Buffer Size in K parameter to improve performance.