Epson SE450 manual RS-232 Cabling, RS-232 Signal Levels

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Configuring the Host Computer for RS-232 Serial Interface

RS-232 Cabling

RS-232 cable pinouts are shown in the table below. For details on RS-232 signal names, consult the RS-232 Standard documentation.

	Origination	Termination	Name	Dir	Description
	(Mod. 8 x 8)	(DB9S)	Name	Dir	Description
	(Mod. 8 x 8)	(DB9S)
	1	8	RTS	Out	Printer is ready to receive data
	2	3	RX	In	Data to the printer
	3	2	TX	Out	Data from the printer
	4	5	GND	--	Signal, earth, and power ground
	5	7	CTS	In	Depends on software selection
	6	6	DTR	Out	Indicate printer is online

Modular Plug

RS-232 Signal Levels

The serial interface uses standard RS-232 signal levels as shown in the table below:

RS-232 signal levels.

Signal Level	Input	Output
MARK (1)	-27 V to -5 V	-5 V
SPACE (0)	+5 V to +27 V	+12 V

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Contents Technical Reference Copyright Contents Page Character Codes Configuration Menu Printer Specifications This page intentionally left blank for double-sided printing Introduction This page intentionally left blank for double-sided printing Configuring the Host Computer for RS-232 Serial Interface RS-232 SettingsRS-232 Signal Levels RS-232 CablingProgramming Overview Programming the LabelWriter PrinterCharacter Evaluation Resetting the PrinterCommand Parameters Bit Character ParametersConversions Objects Font SpecificationsPrint Modes Raster Mode OrientationLandscape Mode Text ObjectsBarcode Objects Graphic Objects Line ObjectsCommand Reference Alphabetical Command ListESC L Commands by Function Position ControlFont Control GS DC2 GS DC3 GS RS GS USMiscellaneous BarcodesPrintable Characters Raster Compatibility Commands20h FFh Printable Characters DC4 Cancel Double Wide Mode CR Carriage ReturnESC a Return Hardware Status ESC a Return Printer StatusESC B Set Dot Tab ESC d Set Print Temperature to Medium ESC c Set Print Temperature to LowESC D Set Bytes per Line ESC e Set Print Temperature to Default ESC E Form FeedESC h Set Print Speed to Fast ESC g Set Print Temperature to HighESC F 1 n Feed n Lines ESC i Set Printing Speed to BarcodeESC L Set Feed Length ESC M Set Font to 12 cpiESC P Set Font to 16 cpi ESC S Set Font to 20 cpi ESC Q Set Top MarginESC T Set Font to 7 cpi ESC U Set Font to 10 cpi ESC V Return Firmware Revision ESC W Wrap DataESC X Set Horizontal Starting Position ESC Y Set Vertical Starting PositionESC y Set 203 x 203 dpi ESC * Reset to DefaultsESC @ Reset to Power-up Condition ESC z Set 136 x 203 dpiETB Raster Mode Compressed Graphics FF Form Feed GS a Starting Position of Bar Code GS DC2 Set Font to Double HeightGS DC3 Cancel Double Height GS d Feed n Text LinesGS h Set Barcode Height GS k Print BarcodeData Matrix Barcode UPC-ASupported Square Data Matrix Symbol Sizes Supported Rectangular Data Matrix Symbol Sizes Commands Command Reference GS l Draw Line in Landscape Mode Least significant byte of the line length in dots GS L Set Feed Length GS RS Set Inverse Print Mode GS q Print UPC/EAN ChecksumGS S Return Printer Status ReturnsGS T Select Line Wrap/Truncate Modes GS t Set Characters per Line in LandscapeGS US Cancel Inverse Print Mode GS u Set Characters per Line in PortraitGS V Set Print Orientation GS W Set Bar Code Element WidthGS ~ Enter Debug Mode GS w Set Barcode Module WidthGS * Landscape Mode Graphics HT Horizontal Tab SO Set Font to Double Wide ModeLF Line Feed SYN Raster Mode Graphics Activating the Caret Feature Caret FeatureUsing the Caret Feature Command Reference Character Codes CharCharacter Codes CharName \ back slash DEL Name Decimal Hex Binary Caret Feature Character Codes 251 1111 252 253 254 255 This page intentionally left blank for double-sided printing Configuration Menu Configuration Menu Interface Specifications Printer SpecificationsHardware Specifications Print Head SpecificationsPrinter Specifications USB Settings Serial Interface SpecificationsThis page intentionally left blank for double-sided printing