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Interfaces
8-27
4 RTS Out Request to Send. The printer sets this signal high and the
signal remains high while the printer is on.
5 CTS In Clear to Send. This pin is optionally used for serial data flow
control protocol when in serial mode.
6 DSR In Data Set Ready. This pin is optionally used for data
validation, depending on the Honor DSR setting, or flow
control, depending on the Serial Protocol setting.
7 GND Logic Ground
20 DTR Out Data Terminal Ready. This pin is optionally used for serial
data flow control protocol when in serial mode.
Table 8-4: Dedicated Serial Connector Pin Assignments (RS-232C) (Continued)
Pin Signal Direction Description