Fujitsu DL6400Pro, DL6600Pro user manual Serial Interface, Rts, Cts

Serial Interface

Serial Interface	RS-232C is the standard serial interface for data terminal equipment
	(DTE). The cable connector at the printer should be a D-subminiature
	Cannon or Cinch DB-25P pronged connector or equivalent
	conforming to EIA standards.
	The following table shows pin assignments commonly used by most
	processors.

Note the following:

•“Input” indicates a signal sent to the printer from the processor.

•“Output” indicates a signal sent from the printer.

•The signal level for mark (logical 1) is –3 V or lower; for space (logical 0), it is +3 V or higher.

Table C–2	Serial interface
Pin	Signal	Direction	Description
number
1	FG	—	Frame Ground
2	TD	Output	Transmitted Data. This pin carries
			information from the printer to the
			processor.
3	RD	Input	Received Data. This pin carries
			information from the processor to
			the printer.
4	RTS	Output	Request To Send. Spaces are sent
			when the printer is ready to transmit
			data.
5	CTS	Input	Clear To Send. Spaces are sent when
			the processor is ready to receive data.
6	DSR	Input	Data Set Ready. Spaces are sent when
			the processor is turned on and ready.
7	SG	—	Signal Ground (common return)
8	CD	Input	Data Carrier Detect. Spaces are sent
			when the processor lets the printer
			receive data.

C-8 User’s Manual