Epson U220B Technical Reference - Page 95
Application Development Information
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TM-U220 Technical Reference Guide Chapter 5 Application Development Information This section contains usable information to develop POS systems that use this printer. 5.1 Various Status Categories This printer is able to send various status reports to the host PC. This section describes about the kind of statuses and handling. Status Categories Drawer kick connector pin status Roll Paper cover status Paper feeding button status Error status Paper remaining amount status Description Cash drawer is open or closed. Roll paper cover is open or closed Paper feed button is pressed or not Various error information (Off-line / On-line), (detail of the error; Mechanical error, autocutter error, auto-recovery error, unrecoverable error) It provides status of paper remaining amount (Near-end or Paper end) Note Near-end status (paper remain status) is supported only by printers equipped with a near-end detector. The near-end detector is a factory option. This printer has an Automatic status back (ASB) function that automatically transmits changes in printer status. It is available in any control method (APD, OPOS, ESC/POS command.) The status format depends on each control method. Refer to each manual for detail. The statuses are useful for the following situations. ❏ When an error status is sent to the host PC, the host PC can display an error message or solution message for operator. ❏ When "Paper near end" or "Paper end" status is sent to the host PC, the host PC can display a warning message for operator to replace roll paper. 5.1.1 Printer Status on APD When you use APD to get printer's status, you have to install "Status API" and use it. Refer to "Status API User's Manual" and the sample program of Status API for details. Rev. D Application Development Information 5-1