AMT Datasouth 4500 Series manual Hardware Flow Control

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Data Communications

Flow Control

The CodeWriter 4500 Series printers provide two methods to control the flow of data between the host system and the printer. Hardware or Xon/Xoff flow control is selected from the Operator Panel.

Hardware Flow Control

The printer uses the CTS, RTS, DTR, and DSR signals during hardware flow control. Table 4 lists how the printer uses each signal.

Signal	Function
CTS	Input: The printer monitors the CTS signal for requests
	from the host system to send data. This signal must be
	asserted ON (Spacing, Positive Voltage) for the printer to
	receive data.
RTS	Output: The printer asserts this signal ON (Spacing,
	Positive Voltage) whenever the printer is turned on. The
	polarity of this signal may be changed from the Operator
	Panel.
DTR	Output: The printer asserts this signal ON (Spacing,
	Positive Voltage) whenever it is ready to receive data. This
	signal controls the flow of data from the host system.
	When the printer’s input buffers have reached an almost
	full level, the printer de-asserts the signal OFF (Marking,
	Negative). In this condition host system should suspend
	sending data. The polarity of this signal may be changed
	from the Operator Panel.
DSR	Input: The printer monitors the DSR signal to control
	sending data to the host system. This signal must be
	asserted ON (Spacing, Positive Voltage) for the printer to
	send data. The CodeWriter 4500 Series printers depend
	on data transmission to the host system for many
	applications.

Table 4 - Hardware Flow Control Signal Functions

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Contents CodeWriter 4500 Series Operator’s Manual Page Warnung Warnung Adventercia Extended Maintenance Hardware WarrantyDatasouth CodeWriter 4500 Disclaimer of Warranties SoftwareDatasouth Table of Contents Contents Table of Figures Introduction CodeWriter 4500 Series ModelsOperator Panel Document Exit Tear Bar CodeWriter 4505 Front/Side View External Media Feed SlotCodeWriter 4500 Series Features Features Media CompatibilityGuide to the Operator’s Manual This Page Intentionally Blank Quick Start Guide Unpacking and Power UpEquipment Checklist Applying Power to the Printer Media Loading Loading and Feeding Label RollLoading and Feeding the Ribbon Ribbon Take-Up Ribbon Supply Roll Ribbon Guide BarOperator Panel Media Settings CodeWriter 4500 Series Operator PanelSet Label Parameters Without saving. Press the saving the changes Set Print Parameters Printer Model Print Speed 4505 100% 4505+ 4510 50%Print Test Label Feature/Settings LabelPrinting Test Labels Running the Quick Start CD Connecting the PrinterQuick Start CD Connecting to a Personal Computer Connecting the CableData Communications CableConfiguring the Personal Computer Settings Control PanelPort Settings Value Bits per second Mode COMx9600,n,8,1 Type File.pal COMx Mode COMx9600,n,8,1 where x = the COM port number Sending Data to the Printer Serial Port Specifications Cable ExamplesSeries Printer DCE Modem DB25 Connector Flow Control Hardware Flow ControlXon/Xoff Flow Control DSROperator Panel Settings for Data Communications Setting the Baud RateSetting the Flow Control Method Setting RTS PolaritySetting the DTR Polarity Setting the ParitySetting the Data Bits Setting the Stop BitsThis Page Intentionally Blank Die-Cut Labels Media SettingsSetting the Document Dimensions Black Bar Labels Notch or Hole LabelProgramming the Label Dimensions Enter to save new defaults. PressPressing the settings Setting the Printing Method Programming the Print MethodSetting the Print Parameters Print Speed and DarknessSetting Print Speed and Darkness Speed DarknessAdjusting Print Position Presentation Distance Forward DistancePicket Fence Horizontal Bar Code Ladder Vertical Bar Code Bar Code QualityBar Code Orientation Bar Code Print Settings This Page Intentionally Blank Operator Panel Reference Display and Panel KeysOff-line Menu Reference Accessing this parameter Parameter Values Description Print Speed %Printing Speed as a 80% 100% Percentage of the printer’sLabel Parameters Config Settings Label System ParamsFirmware Part No Firmware part number Revision are displayedDefault Parameter Values ConfigurationPrint Parameters System ParametersOff-Line Menu Map Maintenance Removing the Ribbon Take-up RollHeater Line Location Printhead CleaningPaper Path Cleaning Troubleshooting Guide Response to Display MessagesRemove Ribbon Print or CANCEL? Media Feed Fault Print or CANCEL? Halt Print Quality Issues First Part of Label Content is MissingSides or Top of Label Content is Missing Ribbon Wrinkling Causing Poor PrintMissing Dots in Label Host System Does Not Report Errors, But Nothing Prints Data Communications IssuesPC Reports Write Fault Error Writing to Device COMx Hex Dump Mode Controlling Hex Dump ModeAdjusting Sensor Sensitivity Adjusting the Gap Sensor SensitivityPrinter is Displaying Media Feed Fault Message Adjusting the Black Bar Sensor Sensitivity Press the Pause key. This takes you to the off-line menu Adjusting the Ribbon Sensor Sensitivity Printer Displays Ribbon Out Message in Thermal Transfer Mode Key until the Enter to Select Diagnostics is displayed Verifying the Sensor OperationThis Page Intentionally Blank Label Genesis Applications OverviewPrinter Application Language PAL PAL Fonts and Bar Codes FontsEAN-13 EAN13 Codabar Postnet Maxicode Bar CodesBar Code MSI Plessy PAL Quick Start Establishing the Development EnvironmentFunction Keystroke Hex Value PAL will display the line as itHas been typed so far Undo Ctrl/ULabel Tutorial Label OutputPAL Command Sequence Hello WorldPAL Coordinate System Printing a Line Applications Overview PAL Command Sequence Label Output World!Hello Hello WorldLabel Output World Printing a Bar CodeApplications Guide Specifications Power Input and OutputEnvironmental PhysicalMedia Serial CommunicationsPrinting ProcessingAdvanced Features High Speed Firmware Update Download ModeAuto-Baud Firmware Update Download Mode Flash Memory ManagementPAL Application Bootstrap Bypass Release Identification Message PauseSetting Contrast and Preheat Key until Enter to Select Expert Settings is displayedEnter to save new defaults . Press Print Darkness ControlAdvanced Features