Transfer direction Start Bit | Epson 8900 Series manual

In addition to the data bits, each character contains the following bits.

qStart bit — A bit immediately preceding the character bits that signals the start of the asynchronous data transmission.

qParity bit — A bit immediately following the character bits that allows the printer to check the integrity of the received data. The setup menu allows you to select even, odd, mark, space, or no parity checking.

qStop bit — A bit immediately following the parity bit that signals the end of the asynchronous data transmission.

▲				transfer direction
start		1	2	3	4	5	6	7
	bit

		lsb						msb

▲					transfer direction
start		1	2	3		4	5	6		7	8
	bit	1	2	3		4	5	6		7	8
	bit
		lsb									msb

serial data structures

	8		stop
	8		bit
			bit
	▲
	▲	parity
		parity
			bit

	9		stop
	9		bit
			bit
	▲	parity
		parity
			bit

Communication Interfaces 10-19

Image 210

Epson 8900 Series manual Transfer direction Start Bit Lsb, Serial data structures Stop Bit Parity

Contents

Model 8900 Series Printer Technical Reference Manual Contents IBM Proprinter XL Emulation Optional Emulation CommandsTl Model 855 Printer DP Emulation Epson FX Printer Emulation Copyright 2001 by Lake Erie Systems Serial Number Purchase Date Firmware Revision Symbols Used in This Manual Contents Texas Instruments Model 855 Printer DP Emulation Epson FX Printer Emulation describes the commandsTexas Instruments Model 855 Printer WP Emulation IBM Proprinter XL Emulation describes Other Manuals About the Printer SuppliesBuffalo Road Erie PA General Information Introduction Paper-Handling System Printer Features Print Quality Low-resolution Medium-resolution High-resolution Typical dot-matrix charactersEffect of increasing dot density Raster Graphics Printer Setup Graphics Printing Mode Operator control panel Display Setup/test menu Model 8900 Series Emulation Modes TI 880 Emulation Execute CommandsEmulation mode submenu Line Feed and Carriage Return Upon Receipt of LF Graphics Line Feed and Carriage Return Upon Receipt of CRCarriage Return Upon Receipt of LF, VT, or DC2 Shift Out Equals Expanded Print IBM Proprinter XL and Epson FX Emulations Processing ModeTI 855 Emulation Automatic Line Feed Hexadecimal Dump Mode Automatic Carriage ReturnSlashed Zeros Interface Parameters PortBuffer Size Parity Baud RateData Bits Flow Control XON/XOFF transmit-on/transmit-off Robust XON/XOFF DTR Pin ConnectionETX/ACK end-of-text/acknowledge PIN Miscellaneous Setup Parameters Character Set Ribbon Adjust Axis ControlRibbon Type Idle Delay Power-Up OnlinePaper Pull-Down Warning Paper Out Equals Busy Graphics Printing ModeLCD Language Limiting Control Panel Operation Test Features Limiting control panel operation menu Character Sets and Global Commands Character Code Table Character Sets US Ascii Character Set US Ascii Character Set International Ascii Character Sets Variations Between US Ascii and International Ascii IBM PC1 Character Set IBM PC1 Character Set, Left Half IBM PC1 Character Set, Right Half IBM PC2 Character Set IBM PC2 Character Set, Left Half IBM PC2 Character Set, Right Half Nordic PC Character Set Nordic PC Character Set, Left Half Nordic PC Character Set, Right Half ISO 8859/1 Multinational Character Set ISO 8859/1 Multinational Character Set, Left Half ISO 8859/1 Multinational Character Set, Right Half IBM Multinational Character Set IBM Multinational Character Set, Left Half IBM Multinational Character Set, Right Half Control Characters Format effectors C0 Control CharactersHexadecimal Char Code Definition Communication controls Information separators Printer Commands Model 8900 Series Printers Global Commands Global Command DescriptionsGlobal Command Set Command Command Name Barcode Operations Set Barcode Parameters Oversize Characters Feature Print Barcode TextSet Oversize Character Scale Factor Color Printing Print Oversize Character Selecting an Automatic Sheet Feeder Bin Selecting a Form Format Defining Raster Graphics Selecting a Font Selecting a Font’s HMIFont ID No Hex Value Pitch Selecting Characters Per Inch cpiSelecting Print Quality Value of n Selecting an International Character Set ModeCharacter Set Hex Selecting an Emulator Adjusting the Print head Z-Axis Position Writing to the Printer DisplayPaper-Handling Operations Character Sets and Global Commands Texas Instruments Model 880 Printer Emulation Tab Right to Column N Cancel Double Line Spacing Introduction Tl 880 Answer Message Function TI 880 Response Format Selection Command Command Name Printer Operation Model 880 Printer Emulation CommandsModel 880 Emulation Commands Form Format Selection Command Command Name Margin Control Horizontal Motion Character Pitch Model 880 Emulation CommandsCommand Command Name Vertical Motion Line Spacing Raster Graphics Font Selection Model 880 Command Descriptions Variables N and n Code Configuration Printer Operation CommandsTransmit Configuration Report Sound Bell Model 880 Configuration Codes Code Description Code Error Miscellaneous Configuration CodesTransmit Status Report Cancel Unidirectional Printing Form Format Selection CommandsModel 880 Error Codes Select Unidirectional Printing Load Default Form Parameters TI Model 880 Printer Emulation Set Bottom Margin at Line N Margin Control CommandsSet Top Margin at Line N Set Top and Bottom Margins at Lines N1 and N2 Set Right Margin at Column N Restore Default Line WidthSet Left Margin at Column N Set Left and Right Margins at Columns N1 and N2 Tab Horizontally Horizontal Motion CommandsBackspace Move to Column n Set Horizontal Tab Stops Tab Right to Column NTab Right N Columns Clear All Horizontal Tab Stops Clear Horizontal Tab Stop at Current Position Vertical Motion CommandsSet Horizontal Tab Stop at Current Position Line Feed Tab Vertically to Line N Tab VerticallyMove to Line n Tab Vertically N Lines Set Vertical Tab Stop at Current Position Character Pitch CommandsSet Vertical Tab Stops Clear All Vertical Tab Stops Line Spacing Commands Set Line Spacing to N/144 Inch Set Line Spacing to 8 lpiSet Line Spacing to n/72 Inch Set Line Spacing to n/216 Inch Print Enhancement Commands Raster Graphics Commands Set Up Graphics Parameters Select 60 dpi Graphics Select 120 dpi Graphics Font Invocation Font Selection CommandsSelect Font N Designate G0 Font by ROM Identifier N Select Designated Character From G2 Font Designate G2 Font by ROM Identifier NDesignate G3 Font by ROM Identifier N Select Designated Character From G3 Font Invoke G1 Font as GR Invoke G2 Font as GRInvoke G3 Font as GR Texas Instruments Model 855 Printer WP Emulation Tab Vertically Absolute Page Introduction Motion Indexes Model 855 WP Commands Model 855 WP CommandsForm Format and Font Selection Model 855 WP Commands Command Name Horizontal Motion ESC SP Select WP Mode Model 855 WP Command DescriptionsSelect DP Mode Suspend Printing Select Reverse Printing Cancel Reverse PrintingReset Most Significant Bit Set Most Significant Bit Form Format and Font Selection Commands Set Form Length to n1 n2 Lines Select Right Margin Justification Set Bottom Margin at Current Position Cancel Right Margin JustificationSet Top Margin at Current Position Set Left Margin at Current Position Horizontal Motion Commands Move Back 1/120 inch Tab Horizontally Absolute Tab Vertically Absolute Move Up One-Half Line Character Pitch CommandsMove Up One Line Move Down One-Half Line Set Vertical Motion Index to n-1/144 Inch Character Set CommandsSet Vertical Motion Index to n-1/48 Inch Print Special Character Select Expanded Print Cancel Expanded PrintCancel Compressed Print Select Compressed Print Cancel Shadow Print Cancel Text-Underline PrintCancel Boldface Print Select Text-Underline Print Select 72 dpi Graphics Select 144 dpi Graphics Texas Instruments Model 855 Printer DP Emulation Set Character Pitch to 10 cpi Set Character Pitch to 12 cpi Introduction Model 855 DP Commands Command Name Printer Operation Model 855 DP Commands Command Name Vertical Motion Color Emulation Model 855 DP Command Descriptions Escape sequence ESC b Hexadecimal 1B Control character. BS Hexadecimal Tab Horizontally Move Print Position to Left Margin Escape sequence ESC Hexadecimal 1B 5E Character Pitch Commands Set Line Spacing to 7/72 Inch DC2 Select Epson-JX Compatible Color Mode Select TI 857 Compatible Color ModeColor Emulation Raster Graphics Commands IBM Proprinter XL Emulation Disable Automatic Line Feed Raster Graphics Commands Introduction IBM Proprinter XL Emulation Commands IBM Proprinter XL CommandsForm Format and Margin Control Character Pitch and Line Spacing Character Set IBM Proprinter XL Command Descriptions IBM Proprinter XL Commands concludedCommand Name Print Enhancement Cancel Line Select PrinterDeselect Printer Form Format and Margin Control Commands Set Form Length to n InchesSet Top of Form Position Cancel Automatic Perforation Skip Select Automatic Perforation Skip Control character. CR Hexadecimal 0D Restore Default Tab Stops Enable Automatic Line Feed Perform n/216 Inch Line FeedPerform Reverse Line Feed Reverse Line Feed Character Pitch and Line Spacing CommandsDisable Automatic Line Feed Clear Vertical Tab Stops Select Programmable Line Spacing Print Single Specified Character Select PC1 Character SetSelect PC2 Character Set Print Multiple Specified Characters DC4 Cancel Text-Overscore Print Select Text-Overscore Print Select Superscript Print Cancel Superscript PrintCancel Subscript Print Select Subscript Print Enable/Disable Double-High Double-Wide Print M1 data byte, bit 0 is least significant M2 data byte, bit 0 is least significant Select 240 dpi Graphics Mode Select High-Speed 120 dpi Graphics Epson FX Printer Emulation Mode Perform n/216 Inch Line Feed Select Graphics Mode m Introduction ESC EM Epson FX Printer Emulation Commands Epson FX Emulation CommandsForm Format Command Command Name Horizontal Motion Command Command Name Character Set Epson FX Emulation Command Descriptions Delete Character Initialize Printer Set Most Significant Bit to ZeroSet Most Significant Bit to One Cancel Most Significant Bit Control Select Unidirectional Printing for One Line Only Form Format Commands Select Letter-Quality Gothic Font Select Letter-Quality Courier Font Select Left Margin Justification Select Full JustificationSelect Text Centering Set Left Margin at Column n Horizontal Motion Commands Set Absolute Print Position Set Relative Print Position N1...n32 Form Feed Select Vertical Tab Channel Set VTC Tab StopsClear All VTC Tab Stops Set Intercharacter Space Line Spacing Commands Select Italic Character Set Select Extended Graphics Character Set Enable Character Positions 128-159 as Printable Characters Disable Character Positions 128-159 as Printable CharactersSelect International Character Set Select Expanded Print for One Line Select Expanded Print Until Canceled by ESC W NUL Cancel Double-High PrintSelect Double-High Print Cancel Compressed Print Cancel Boldface Print Cancel Italic Print Select Master Print ModeSelect Italic Print Graphics Commands Select 9-Pin 60 dpi Graphics Select 9-Pin 120 dpi GraphicsSelect 240 dpi Graphics Select Graphics Mode m Reassign Graphics Mode Optional DEC LA 120 Emulation DEC LA120 Emulation Commands DEC LA120 Commands Horizontal Tab Sequences Horizontal Pitch Sequences Vertical Tab Sequences Vertical Pitch SequencesCharacter Set Selection Sequences Answerback Memory Function New Line ModeDEC LA120 Commands Not Recognized DEC LA120 Emulation Auto Wrap Answerback Memory Message Load Communication Interfaces 10-18 Introduction Communication interfaces simplified block diagrams Data-Transfer OperationsHost Local system Parallel Interface Printer Host Parallel Communication Interface Parallel Interface Signal Descriptions Parallel Interface Signals Name Pin Return Source Data Signals Data Strobe SignalAcknowledge Signal Busy Signal Fault SignalInitialize Signal Parallel Interface Communication Protocol Parallel data timing sequence Parallel Interface Timing Requirements Timing Requirements Initialize Sequence Error Conditions Serial Communication InterfaceCommunication Interfaces Interface Connection Serial Interface ConnectorSerial Interface Signals Name Pin Source Interface Signal Descriptions Data Carrier Detect Signal Clear to Send SignalData Set Ready Signal Data Terminal Ready Signal Interface Data Transmission Rate Serial Data Format Transfer direction Start Bit Transfer direction Start Bit LsbSerial data structures Stop Bit Parity Serial Interface Busy-Handling Protocols Flow-Control Busy-Handling Protocols Optional Communication Interfaces Direct-Connect Busy-Handling Protocols RS-422 Communication Interface Current Loop Communication Interface Axis Adjustment Escape Sequence Introduction Considerations for Z-Axis Adjustments Isolated labels Uneven edges Paper motion is reversed Right margin of 1-inch is set at column Using the Z-Axis Escape SequenceEscape Sequence Z-Axis Printhead Position Text Label Emulation Commands ESC DLE E TI855 EXT ESC CR P changes to TI855 WP Index Communication interface Nvram Printing Unidirectional printing 7-8 Width, line Adjust