Printronix L5020 - Manual (Page 77)

Serial Parameters (RS-232 And RS-422)
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Baud Rate
Values: 110 to 256,000.
9600 is the default.
This parameter must be set to match your host computer.
Baud rate is the number of bits, including control bits (start/stop and
parity bits) transferred per second over the interface.
Data Bits
Values: 5 to 8 (default).
This parameter must be set to match your host computer.
Serial interfaces support 5, 6, 7, and 8-bit transfer of data words.
Most use 8-bit data transfer, but this must match the host computer.
Stop Bits
Values: 1(default) or 2.
This parameter must be set to match your host computer.
Stop bits signal the end of a transferred serial data word.
Parity
Values: None (default), 0, 1, Even, or Odd.
This parameter must be set to match your host computer.
The host may send a parity bit with every data word. The parity bit
is used for error checking.
DTR (Data Terminal Ready) Function
Values: On/Offline&Buf (default), True, False or On/Offline.
This parameter must be set to match your host computer.
The DTR Function parameter is part of hardware flow control. This
parameter determines when the printer generates the Data
Terminal Ready (DTR) signal to the host computer.
DTR is a status signal that the printer sends to the host to indicate
whether or not the printer is ready to receive data.
• The True parameter setting causes the printer to continuously
assert the DTR signal.