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

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

Page 5-3

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

Contents

OperatorSvice Manual Sato America, Inc Table of Contents Troubleshooting Sato ContactsSato Group of companies Overview Introduction General Printer Specifications Attribute General Printer Specifications Media General Specifications CONT’D Attributes Barcodes Optional Accessories Introduction Sato D508/D512 Operator Manual Installation Electrical Precautions Printer Placement Tips General Precautions Unpacking Printer Part Names Follow these steps to set up your printer Setting UP the Printer Loading Media Fanfold media Overview of the fanfold-paper loading path Label Sensing This page is left blank intentionally Operating Panel Rear Panel DIP Switch Settings Configuration Panel Switch 4 Unused DIP Switch Settings CONT’D Switch 7 Data Dump Switch 8 Unused Error Codes Offsets Mode Length of Offset mm Print head resolution Pitch Offset Potentiometer AdjustmentsOriginal First Line Print Position Moved with Leading Edge Positive + Offset Print Darkness Potentiometer Adjustments CONT’D Data Dump Diagnostic Label Printing Test Labels Printing FACTORY/SERVICE Test Prints Configuration and Operation Sato D508/D512 Operator Manual Introduction Adjusting the Print Quality Cleaning 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 Specifications Single Job Buffer Receive Buffer Multi Job Buffer Receive Buffer CONT’D IEEE1284 Parallel Interface PIN Signal Direction RS-232C Interface General Specifications Pin Direction Signal Definition 1 RS-232C Interface Signals ON/X-OFF Flow Control READY/BUSY Flow ControlUniversal Serial BUS Interface Local Area Network Interface Wireless LAN Interface 802.11 B/G SpecificationsSwitch Setting Software Specifications LED Indicator Status Interface Specifications Initial Checklist Checking the IEEE1284 Parallel InterfaceObservations Using the IEEE1284 Parallel Interface CONT’D Obserations Checking Using the Parallel Interface CONT’D Checking the RS232C Serial Interface LED Indicators Buzzer Error Condition Corrective Action Error Signals Checking the 802.11G Wireless Interface Sato Contacts Asia Pacific & Oceania Region Sato Group of Companies