Request To Send; Buffer Size In Kbytes; Poll Character; One Char Enquiry - IBM 6500 User Manual

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.
v True (the default). Continuously asserts the RTS signal.
v Ready/Buffer Not Full. Asserts the RTS signal when the printer is READY and
v Not Ready/Buffer Full. Asserts the RTS signal when the printer is NOT READY
v False never asserts the RTS signal.
Note: Xon/Xoff is always on. See page 138 for more information.

Buffer Size in Kbytes

This parameter determines the size of the input buffer, in 1K increments. Up to
16K are available.
v 16 (the default)
v 1 - 16

Poll Character

This option is used when One Char Enquiry is enabled and the IGP feature is
available. 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 X'00'
through X'FF' Hex.
v X'00' Hex (the default)
v X'00' - X'FF'

One Char Enquiry

When enabled, and the IGP feature is available, 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.
v Disable (the default)
v Enable
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Infoprint 6500 User's Manual
the internal serial buffer is not full.
or the internal serial buffer is full.