SATO D508, D512 service manual Receive Buffer CONT’D, Multi Job Buffer

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SECTION 5: INTERFACE SPECIFICATIONS

5.2 THE RECEIVE BUFFER (CONT’D)

Multi Job Buffer

The printer is able to continuously receive print jobs, compiling and printing other jobs at the same time. It acts much like a "print buffer" to maximize the performance of the host and the printer.

When you are using the RS232 Serial interface, the Multi Job Buffer uses either the Ready/ Busy with DTR (pin 20) or X-On/X-Off flow control protocols. With an empty receiving buffer, the status of DTR is "high" (or an X-On status if using X-On/X-Off), meaning the printer is ready to receive data. When the receive buffer is holding 1.95MB of data (1MB from being full), DTR will go "low" (or an X-Off is sent) indicating the printer can no longer receive data. This condition is called "Buffer Near Full."

The receiving buffer will not be able to receive more data again until a "Buffer Available" condition occurs. This takes place when the receiving buffer has emptied so that only 1MB bytes of data are being held (1.95MB bytes from being full). At this time, DTR will go "high" or an X-On is sent to tell the host that it can again receive data.

All printer error conditions (i.e., label out, Time-out Error, etc) will cause the printer to go busy (DTR "low" or X-Off) until the problem is corrected and the printer is placed on-line. The printer will also be busy if taken off-line from the front panel.

SATO D508/D512 Operator Manual

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Contents OperatorSvice Manual Sato America, Inc Table of Contents Troubleshooting Sato ContactsSato Group of companies Overview Introduction General Printer SpecificationsAttribute General Printer SpecificationsMedia General Specifications CONT’DAttributes Barcodes Optional Accessories Introduction Sato D508/D512 Operator Manual Installation Electrical Precautions Printer Placement TipsGeneral Precautions Unpacking Printer Part Names Follow these steps to set up your printer Setting UP the PrinterLoading Media Fanfold media Overview of the fanfold-paper loading path Label SensingThis page is left blank intentionally Operating Panel Rear Panel DIP Switch Settings Configuration PanelSwitch 4 Unused DIP Switch Settings CONT’DSwitch 7 Data Dump Switch 8 Unused Error Codes Offsets Mode Length of Offset mm Print head resolutionPitch Offset Potentiometer AdjustmentsOriginal First Line Print Position Moved with Leading Edge Positive + OffsetPrint Darkness Potentiometer Adjustments CONT’DData Dump Diagnostic Label Printing Test Labels Printing FACTORY/SERVICE Test Prints Configuration and Operation Sato D508/D512 Operator Manual Introduction Adjusting the Print QualityCleaning the Print HEAD, Platen and Rollers Cleaning the Print HEAD, Platen and Rollers CONT’D RELEASING/REPLACING the Print Head Cleaning the Sensor This page is left blank intentionally Interface Types Interface SpecificationsSingle Job Buffer Receive BufferMulti Job Buffer Receive Buffer CONT’DIEEE1284 Parallel Interface PIN Signal DirectionRS-232C Interface General SpecificationsPin Direction Signal Definition 1 RS-232C Interface SignalsON/X-OFF Flow Control READY/BUSY Flow ControlUniversal Serial BUS Interface Local Area Network InterfaceWireless LAN Interface 802.11 B/G SpecificationsSwitch Setting Software Specifications LED Indicator StatusInterface Specifications Initial Checklist Checking the IEEE1284 Parallel InterfaceObservations Using the IEEE1284 Parallel Interface CONT’D Obserations Checking Using the Parallel Interface CONT’DChecking the RS232C Serial Interface LED Indicators Buzzer Error Condition Corrective Action Error SignalsChecking the 802.11G Wireless Interface Sato Contacts Asia Pacific & Oceania Region Sato Group of Companies