Epson 4100 manual JB0-BL

B-2 Appendix B—Serial Interface

abbreviations, and pin assignments. The direction of the arrow indicates whether the signal is an input or output of the device.

Pin assignments are specified for 25-pin D-type connectors. The RS-232- C standard does not specify pin assignments for serial communication on 9-pin connectors.

Only nine of the 25 RS-232-C signals are commonly used in serial connections. These nine are listed in the table on Page B-4.

Serial Port Connector

JB0-BL

RS-422-A serial interface is optional. RS-422-A serial connectivity involves differential drivers and receivers for extended computer-to-printer distances, depending on the baud. RS-422-A signals are not implemented on the standard printer.