Interface Boards

There are a number of optional interfaces that can be used to supplement the capabilities of your printer’s built-in serial and parallel interfaces.

Choosing an interface

The following information should give you a general idea of the features provided by these optional interface boards. Optional interfaces can be divided into two main categories:

•The IEEE-488 interface, which offers standardized connections, trouble-free operation, and the ability to connect computers, printers and other devices on the same line so that they may share data freely.

•Serial interfaces, which are necessary if your computer is no equipped with a parallel interface or if you need an interface that comforms to the Current Loop standard instead of the RS-232C. In addition, the available serial interface boards provide user selectable baud rates and data word structures. These interfaces also offer some combination of the following features: X-on/X-off data communication protocol, loopback self-test modes, and data buffers that increase the printer’s buffering capacity.

If you are still unsure whether you need an optional interface, or would like to know more about interfaces, check with your EPSON dealer.

Compatible interfaces

The following is a list of EPSON interfaces that are compatible with the SQ-850 and SQ-2550 printers. Note that some of these interfaces may not be available in all contries.

Using Printer Options 5-31