Busy Signal, Fault Signal, Initialize Signal | Epson 8900 Series

Busy Signal

This active-high signal from the printer indicates that the printer is busy and cannot accept additional data. During data-transfer operations, the leading edge of the host-generated strobe signal activates BUSY for each character-transfer cycle. The printer sends an acknowledge pulse and deactivates BUSY at the completion of each character-transfer operation (unless the printer is otherwise busy). BUSY is active (high) under any of the following conditions.

qThe host has clocked a character into the receive buffer, but the printer has not yet acknowledged it.

qThe receive buffer is filled to capacity.

qThe printer is in its offline state.

qThe printer is out of paper or a printer error condition exists.

qOne of the control panel menus has been invoked and the printer has not been returned to its online state.

Fault Signal

The fault (FAULT-) signal from the printer indicates to the host that an error condition (such as a mechanical failure or a receive buffer overflow) exists in the printer. A paper-out condition activates both FAULT- and PE to indicate the condition to the host

Initialize Signal

The initialize (INIT-) signal from the host causes the printer to execute a power-up reset sequence. During this sequence, the printer performs its normal self-tests and then assumes its online condition. Since INIT- is a host-generated signal, the conditions under which it is generated depend on the type of computer serving as host.

Communication Interfaces 10-9

Image 200

Epson 8900 Series manual Busy Signal, Fault Signal, Initialize Signal

Contents

Model 8900 Series Printer Technical Reference Manual Contents Optional Emulation Commands Tl Model 855 Printer DP EmulationIBM Proprinter XL Emulation Epson FX Printer Emulation Copyright 2001 by Lake Erie Systems Serial Number Purchase Date Firmware Revision Symbols Used in This Manual Contents Epson FX Printer Emulation describes the commands Texas Instruments Model 855 Printer WP EmulationTexas Instruments Model 855 Printer DP Emulation IBM Proprinter XL Emulation describes Buffalo Road Erie PA Other Manuals About the PrinterSupplies General Information Introduction Paper-Handling System Printer Features Print Quality Effect of increasing dot density Low-resolution Medium-resolution High-resolutionTypical dot-matrix characters Raster Graphics Printer Setup Graphics Printing Mode Operator control panel Display Setup/test menu Model 8900 Series Emulation Modes Execute Commands Emulation mode submenuTI 880 Emulation Line Feed and Carriage Return Upon Receipt of LF Line Feed and Carriage Return Upon Receipt of CR Carriage Return Upon Receipt of LF, VT, or DC2Graphics Shift Out Equals Expanded Print Processing Mode TI 855 EmulationIBM Proprinter XL and Epson FX Emulations Automatic Line Feed Slashed Zeros Hexadecimal Dump ModeAutomatic Carriage Return Buffer Size Interface ParametersPort Baud Rate Data BitsParity Flow Control XON/XOFF transmit-on/transmit-off Robust XON/XOFF Connection ETX/ACK end-of-text/acknowledgeDTR Pin PIN Miscellaneous Setup Parameters Character Set Ribbon Type Ribbon AdjustAxis Control Paper Pull-Down Warning Idle DelayPower-Up Online Graphics Printing Mode LCD LanguagePaper Out Equals Busy 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 C0 Control Characters Hexadecimal Char Code Definition Communication controlsFormat effectors Information separators Printer Commands Global Command Descriptions Global Command SetModel 8900 Series Printers Global Commands Command Command Name Barcode Operations Set Barcode Parameters Set Oversize Character Scale Factor Oversize Characters FeaturePrint Barcode Text Color Printing Print Oversize Character Selecting an Automatic Sheet Feeder Bin Selecting a Form Format Defining Raster Graphics Font ID No Selecting a FontSelecting a Font’s HMI Selecting Characters Per Inch cpi Selecting Print QualityHex Value Pitch Value of n Character Set Hex Selecting an International Character SetMode Selecting an Emulator Paper-Handling Operations Adjusting the Print head Z-Axis PositionWriting to the Printer Display 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 Model 880 Printer Emulation Commands Model 880 Emulation CommandsCommand Command Name Printer Operation Form Format Selection Command Command Name Margin Control Horizontal Motion Model 880 Emulation Commands Command Command Name Vertical MotionCharacter Pitch Line Spacing Raster Graphics Font Selection Model 880 Command Descriptions Variables N and n Printer Operation Commands Transmit Configuration ReportCode Configuration Sound Bell Model 880 Configuration Codes Code Description Transmit Status Report Code ErrorMiscellaneous Configuration Codes Form Format Selection Commands Model 880 Error CodesCancel Unidirectional Printing Select Unidirectional Printing Load Default Form Parameters TI Model 880 Printer Emulation Margin Control Commands Set Top Margin at Line NSet Bottom Margin at Line N Set Top and Bottom Margins at Lines N1 and N2 Restore Default Line Width Set Left Margin at Column NSet Right Margin at Column N Set Left and Right Margins at Columns N1 and N2 Horizontal Motion Commands BackspaceTab Horizontally Move to Column n Tab Right to Column N Tab Right N ColumnsSet Horizontal Tab Stops Clear All Horizontal Tab Stops Vertical Motion Commands Set Horizontal Tab Stop at Current PositionClear Horizontal Tab Stop at Current Position Line Feed Tab Vertically Move to Line nTab Vertically to Line N Tab Vertically N Lines Character Pitch Commands Set Vertical Tab StopsSet Vertical Tab Stop at Current Position Clear All Vertical Tab Stops Line Spacing Commands Set Line Spacing to 8 lpi Set Line Spacing to n/72 InchSet Line Spacing to N/144 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 Selection Commands Select Font NFont Invocation Designate G0 Font by ROM Identifier N Designate G2 Font by ROM Identifier N Designate G3 Font by ROM Identifier NSelect Designated Character From G2 Font Select Designated Character From G3 Font Invoke G3 Font as GR Invoke G1 Font as GRInvoke G2 Font as GR Texas Instruments Model 855 Printer WP Emulation Tab Vertically Absolute Page Introduction Motion Indexes Form Format and Font Selection Model 855 WP CommandsModel 855 WP Commands Model 855 WP Commands Command Name Horizontal Motion ESC SP Model 855 WP Command Descriptions Select DP ModeSelect WP Mode Suspend Printing Cancel Reverse Printing Reset Most Significant BitSelect Reverse Printing Set Most Significant Bit Form Format and Font Selection Commands Set Form Length to n1 n2 Lines Select Right Margin Justification Cancel Right Margin Justification Set Top Margin at Current PositionSet Bottom Margin at Current Position Set Left Margin at Current Position Horizontal Motion Commands Move Back 1/120 inch Tab Horizontally Absolute Tab Vertically Absolute Character Pitch Commands Move Up One LineMove Up One-Half Line Move Down One-Half Line Character Set Commands Set Vertical Motion Index to n-1/48 InchSet Vertical Motion Index to n-1/144 Inch Print Special Character Cancel Expanded Print Cancel Compressed PrintSelect Expanded Print Select Compressed Print Cancel Text-Underline Print Cancel Boldface PrintCancel Shadow 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 Color Emulation Select Epson-JX Compatible Color ModeSelect TI 857 Compatible Color Mode Raster Graphics Commands IBM Proprinter XL Emulation Disable Automatic Line Feed Raster Graphics Commands Introduction Form Format and Margin Control IBM Proprinter XL Emulation CommandsIBM Proprinter XL Commands Character Pitch and Line Spacing Character Set Command Name Print Enhancement IBM Proprinter XL Command DescriptionsIBM Proprinter XL Commands concluded Deselect Printer Cancel LineSelect Printer Set Top of Form Position Form Format and Margin Control CommandsSet Form Length to n Inches Cancel Automatic Perforation Skip Select Automatic Perforation Skip Control character. CR Hexadecimal 0D Restore Default Tab Stops Perform Reverse Line Feed Enable Automatic Line FeedPerform n/216 Inch Line Feed Character Pitch and Line Spacing Commands Disable Automatic Line FeedReverse Line Feed Clear Vertical Tab Stops Select Programmable Line Spacing Select PC1 Character Set Select PC2 Character SetPrint Single Specified Character Print Multiple Specified Characters DC4 Cancel Text-Overscore Print Select Text-Overscore Print Cancel Superscript Print Cancel Subscript PrintSelect Superscript 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 Form Format Epson FX Printer Emulation CommandsEpson FX Emulation Commands Command Command Name Horizontal Motion Command Command Name Character Set Epson FX Emulation Command Descriptions Delete Character Set Most Significant Bit to One Initialize PrinterSet Most Significant Bit to Zero 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 Text Centering Select Left Margin JustificationSelect Full Justification Set Left Margin at Column n Horizontal Motion Commands Set Absolute Print Position Set Relative Print Position N1...n32 Form Feed Clear All VTC Tab Stops Select Vertical Tab ChannelSet VTC Tab Stops Set Intercharacter Space Line Spacing Commands Select Italic Character Set Select Extended Graphics Character Set Select International Character Set Enable Character Positions 128-159 as Printable CharactersDisable Character Positions 128-159 as Printable Characters Select Expanded Print for One Line Select Double-High Print Select Expanded Print Until Canceled by ESC W NULCancel Double-High Print Cancel Compressed Print Cancel Boldface Print Select Italic Print Cancel Italic PrintSelect Master Print Mode Graphics Commands Select 240 dpi Graphics Select 9-Pin 60 dpi GraphicsSelect 9-Pin 120 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 Character Set Selection Sequences Vertical Tab SequencesVertical Pitch Sequences New Line Mode DEC LA120 Commands Not RecognizedAnswerback Memory Function DEC LA120 Emulation Auto Wrap Answerback Memory Message Load Communication Interfaces 10-18 Introduction Host Local system Parallel Interface Printer Communication interfaces simplified block diagramsData-Transfer Operations Host Parallel Communication Interface Parallel Interface Signal Descriptions Parallel Interface Signals Name Pin Return Source Acknowledge Signal Data SignalsData Strobe Signal Initialize Signal Busy SignalFault Signal Parallel Interface Communication Protocol Parallel data timing sequence Parallel Interface Timing Requirements Timing Requirements Initialize Sequence Communication Interfaces Error ConditionsSerial Communication Interface Serial Interface Connector Serial Interface Signals NameInterface Connection Pin Source Interface Signal Descriptions Clear to Send Signal Data Set Ready SignalData Carrier Detect Signal Data Terminal Ready Signal Interface Data Transmission Rate Serial Data Format Serial data structures Stop Bit Parity Transfer direction Start BitTransfer direction Start Bit Lsb 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 Using the Z-Axis Escape Sequence Escape Sequence Z-Axis Printhead PositionRight margin of 1-inch is set at column 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