Epson ActionPrinter 4000 User Manual - Page 164
Baud rate selection, Handshaking timing, Error handling, Using the Printer Options
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The Interface Boards For all other data transfer conventions, such as word structure or communications protocol, use the information in the manual supplied with your #8143 optional interface. Baud rate selection You can select baud rates from 75 to 19,200 BPS (Bits Per Second). When setting the baud rate, make sure you use the bit rate selection table for printers with buffers (in the #8143 interface manual). For more information on your printer's input buffer settings, see the section on DIP switch functions in Chapter 3 of this manual. 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. Error handling When a parity error is detected, your printer prints an asterisk (*). All other errors, including framing and overrun, are ignored. 5-42 Using the Printer Options