Request to Send
113
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.
•
READY AND BUFFER NOT FULL asserts the RTS signal when the
printer is READY and the internal serial buffer is not full.
•
NOT READY OR BUFFER FULL asserts the RTS signal when the printer
is NOT READY or the internal serial buffer is full.
•
FALSE never asserts the RTS signal.
•
TRUE (the default) continuously asserts the RTS signal.
NOTE:
XON/XOFF is always on. See page 123 for more information.
Buffer Size in Kbytes
This parameter determines the size of the input buffer. The maximum input
buffer is up to 256K. 64K is the default.
Poll Character
This option is used when One Char Enquiry is enabled. Whenever the printer
receives this character, it sends a response to the host indicating the current
state of the printer. It may be configured from 00 through FF Hex. The default
value is 00.
One Char Enquiry
When enabled a status byte is sent back to the host when the poll character
or the command SFCC enquiry is sent to the printer (serial interface only).
The poll character is received and the status byte is sent whether the printer is
online or offline. The SFCC enquiry will only be processed when the printer is
online.
The status byte sent to the host is defined as follows:
BIT
USE
7,6
0
5
1
4
0
3
1 = printer fault
2
1 = IGP busy
1
0 = offline, 1 = online
0
1 = serial input buffer exceeds xoff/on
Содержание 6400-D Generation II Series
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