Printronix L5035 - Manual (Page 95)

Serial Parameters (RS-232 And RS-422)
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Buffer Size
Value: 8192 bytes.
This parameter reflects the size in characters of the printer’s data
buffer.
This parameter cannot be changed in the current release of the
emulation software. However, it might be changeable in a future
release.
Number (of) Buffers
Value: 2.
This parameter reflects the number of data buffers in the printer’s
memory.
This parameter cannot be changed in the current release of the
emulation software. However, it might be changeable in a future
release.
FIFO Trigger
Values: None, 1, 4, 8, or 14 (default).
You can specify how many bytes the First In, First Out (FIFO) input
buffer stores before the bytes are sent to the printer’s data buffer.
Diagnostic
Values: None (default), Transmit, or Loopback.
This parameter provides for testing of the serial interface circuits.
Tests include a data transmission test and a serial loopback test
(which requires a loopback plug).
Series 1 Poll
Values: The allowable range is 0 through 255. The default value for
this parameter is 0.
This parameter selects the character that the printer recognizes as
the Series 1 poll character.