Epson SQ-2550, SQ-850 Error handling, Handshaking timing, Baud rate selection, 5-40Using Printer Options

Interface Boards

Baud rate selection

You can select from the following baud rates: 300, 600, 1200, 2400, 4800, 9600, or 19200 bits per second (BPS). When setting the baud rate, make sure you use the bit rate selection table below.

Handshaking timing

When the vacant area for data in the input buffer drops to 256 bytes, the printer outputs an X-off code or sets the DTR flag to “1” (MARK) indicating that it cannot receive data.

Once the vacant area for data in the buffer recovers to 512 bytes, the printer outputs an X-on code or set the DTR flag to “0” (SPACE) indicating that it is again ready to receive data.

Error handling

When a parity error is detected, your printer prints an asterisk

(*). All other errors, including framing and overrun, are ingnored.

5-40 Using Printer Options