Serial Interface | Compaq LA36 specification

Interface Information

Pin	Direction	Signal	Description

31	To printer	Init L	Set to high for Reverse Channel operation

32	From printer	DataAvail L	Reverse channel: Data 0 and 4

33			Not used

34			Not used

35			Not used

36	To printer	SelectIn L	Set to high for Reverse Channel

Serial Interface

Use the cable that comes with the printer or the Digital BC16E cable or equivalent. If you prepare a cable separately, the cable connector at the printer side should be a male Modified Modular Jack (MMJ) or the equivalent that conforms to EIA standards.

The following table shows the pin assignments. In the table:

•“Input” denotes a signal from the computer to the printer.

•“Output” denotes a signal from the printer to the computer.

•The signal level for mark state (logical 1) is -5 V to -6 V; for space state (logical 0), it is +5 V to +6 V.

Pin	Signal	Direction	Description
No.	Name

1	Ready Out	Output	Data Terminal Ready

2	Transmit Data +	Output	This pin carries information from the printer to
			the computer.

3	Transmit Data -	Output	Common signal level. This pin carries
			information from the printer to the computer.

4	Receive Data -	Input	Common signal level at the computer side.
			This pin carries information from the computer
			to the printer.

5	Receive Data +	Input	This pin carries information from the computer
			to the printer.

6	Ready In	Input	Optional (available as Data Set Ready)

D-4

Image 152

Compaq LA36 user manual Serial Interface

Contents

Compaq Matrix Printer LA36 Page Table of Contents Printing Supplies and Options Resident Fonts Glossary GL-1 Index IN-1 Preface Organization Maintenance Viii Introduction Options Paper Handling 1812 Parts of the Printer Front View Operations of the Control Panel Basic States of the Printer Control Panel Operations Will turn blinking Paper Specifications Paper Size Selecting PaperPrinter Acoustical Feed-Backs Paper Thickness and Number of Copies Paper select lever Font indicators Paper thickness lever Overview of Paper OperationsControl panel Buttons Ready state but not receiving or printing data Pause state Levers and Buttons Used for Paper Handling AdjustingforPaperThickness Using Single Sheets Copy Copies Ribbon replacementPaper Thickness Lever Positions Loading a Single Sheet of Paper Setting Paper Select Lever and Left Paper Guide Ejecting Single Sheets UsingContinuousForms Positioning the Paper Stack Loading Continuous Forms Push Tractor and Rear Feed Positioning the Tractor Using the Tractor Guide Adjusting Paper Tension Loading Continuous Forms Pull Tractor and Bottom Feed Better manipulate the metallic parts of the tractor unit Removing the Tractor Unit Installing the Tractor Unit for Pull-tractor Feed Passing Continuous Forms Paper From Under the Printer Setting Continuous Forms Paper on the Tractors Tearing Off Continuous Forms Automatic-Tear-Off Advancing Unloading Continuous Forms Push-Feed ModeRecovering from an Unexpected Unloading Operation Manual Tear-Off Advancing Feeding and Positioning Paper Print Area Definition Abcdefghij ··· Top-of-Form Adjustment Line Feed/Form Feed Switching Paper Types Switching between Push-Feed and Pull-Feed Tips on Paper Handling Turn the printer off Use the no Tear value of the Tear option in the Set-Up mode General TipsMultipart Forms Envelopes Selecting Print Features Printing Using Commercial Software Using the Control Panel Selecting Macro 1 or Macro Epson IBM Macro 1 and Macro 2 SettingsDEC DEC mode IBM&Epson modeIBM mode Epson mode Installation Settings Adjustments SettingsMenu Access Settings Menu access Selecting a Resident Font Changing the Protocol Starting or Stopping Printing Starting PrintingStopping and Viewing Printing Resuming Printing Removing Continuous Forms Removing Printed PagesRemoving Single Sheets Using Set-Up Mode What is Set-Up Mode for? Entering the Set-Up Mode How Set-Up Works OFF on Initial Printout in the Set-Up Mode Overview of the Set-Up Mode Set-Up Mode Functions Options with Pre-determined Values DEC Enter the Set-Up mode Example Changing theVertical PitchSelect the Macro 2 function Print the menu of the vertical pitch option Options with Undetermined Values Example Changing the Left Margin Change the left margin from column 1 to column Options with Both Pre-determined and Undetermined ValuesPrint the menu of the left margin option Summary of the Set-Up Mode Printing the Printer Configuration Points to Remember Printout of Factory Settings Using the Print Function Deciding Which Options to Change Required Options Install Baud Rate BIT&PARITY Buffer CTL Disc Fault Changing Macro 1 and Macro 2 Options Macro 1 and Macro 2 Options List Macro 1 and Macro 2 Options and Values Prtcl Parl FontHsdraft HI-IMPACT Line Mode Form LenghLeft Margn Form Width Paper SRC ManualRsvd Print DIR Unidir DEC PRT ID LA50 IDAuto Wrap Truncate EOT Discon DEC G0 CST BritishFinnish French User Pref LatinLatin HB Latin GK Deflt SET CP DHNTurkey Ecma IBM SET DBL HigtIBM AGM CHR SET ChangingInstallOptions Install Options List Install Options and Values Downloading fonts, reduce the input buffer Input buffer, a minimal download buffer isProvided. If you need a larger capacity for Number of data bits Parity bit AdjustingTop-of-FormOrigin Adjust Options and ValuesFnfold ADJ Mnual ADJ ChangingMenuAccessOptions Menu Access Option and ValuesExiting and Saving LF and FF/Load buttons at the same time. Printing Test RecallingFactorySettingsUsing the Diagnostic Functions Hex Dump Mode Start the Hex Dump mode select the HEX-DUMPoptionExit the Hex Dump mode Print the hex dump Sample Hex Dump Set-Up Mode Quick Reference Setup Mode MACRO1 MACRO2 Print Install Adjust Tests RCALL-FACT MENU-ACCES SAVE&EXIT Using Set-Up Mode Cleaning Cleaning and Vacuuming the Printer Cleaning the Platen and Paper Bail Rollers Cleaning the Print Head Replacing the Ribbon Cartridge Remove the new ribbon cartridge from its package and install Replacing the Print Head Maintenance Solving problems Print Quality Problems and Solutions Thickness of your paper. See the Paper Thickness Top margin is wrong Paper Handling Problems and Solutions Paper cannot be loaded or fed Operating Problems and Solutions Depressed DiagnosticFunctions Printer Failures Start the vertical alignment test Adjust the vertical print alignment at Letter quality speedCheckingVerticalAlignment Vertical Alignment Adjustment Exit the vertical alignment function Supplies Options InstallingOptions Installing the Color Kit PhysicalSpecifications FunctionalSpecifications Barcode Character setsFonts PerformanceSpecifications PaperSpecifications Print Area Print Area for Continuous Forms Paper Thickness Do not use in high humidity environments Command Sets DEC PPL2 Quick Reference Guide Control string ConventionsEscape 1/11, introduces an escape sequence Positioning Controls C0 Control CodeC1 Control Code CSI Pn ... Pn u Sheet Size and Margins Type Size and Spacing, Managing Implicit Cursor Motion Font Management and Attribute Selection Tabs CSI Pn . . . Pn uCSI Pn . . . Pn TBC Selecting Character Sets SCS Final Characters Ascii Reports DCS Ps Pn2 Pn3 String STCSI Ps n Brief CSI Ps n Miscellaneous Barcode Printing DecbarDecsbca CSI Ps1 Pn2 Sixel Graphics Device Control String Envelope Sixel Graphics Protocol Selector Ps1 Sixel Graphics Grid Size defined by Pn3 Pc Pu Px Py Pz Sixel Graphics Control CodesPn1 Pn2 Pn3 Pn4 Standard 8-bit Code Table Left Half Standard 8-bit Code Table Right Half Designating and Invoking Character Sets National Replacement Character Sets ISO JIS Print Mode Control IBM Proprinter X24E and XL24E Quick Reference Guide Horizontal Control ESCVertical Control Tabulation Character Set Control FormattingColor Selection Can DC1Downloading Bit Image Graphics Cut Sheet Feeder Control ESC EMESC EM E ESC EM R Epson ESC/P2 Quick Reference Guide ESC M ESC P Line feed Form feed Advance paper n/180 inch 1 £ n £ ESC J n £ d1 £ 255 0 £ d2 £ Character codes £ character codes £ Timeless Nimbus Sans Courier Set scalable font mode Font Selection and Downloading ESC @ Function Command Interface Information Parallel Interface Centronics Compatible signals Ieee 1284-B Nibble Mode signals To printer HostClk High in reverse data transfer phase Serial Interface Buffer Control Cable WiringSerial Options XON/XOFF DC1/DC3 DTR Character Sets DEC PPL2 Protocol Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Character Sets Default Sets Code Code Turkish Ecma ISO Latin Hungarian Slovenian Polish Mazowian Kamenicky Cyrillic Elot Latin Polish Lithuanian Macedonian IBM Set IBM Proprinter X24E and XL24E ProtocolIBM Set 1/2 Common Characters Epson ESC/P2 ProtocolNational Character Sets National Characters Character Sets Resident Fonts Timeless outline Nimbus Sans outline Glossary Carriage Return CR Dpi Line Spacing Pitch Tear Bar Disc Fault Answer ENQAutoansbk BIT&PARITY Bottom MRG Error Beep EOT DisconForm Lengh Horz Pitch Recovering form an Unexpected Unloading Operation Vert Pitch International Standards Conformity