Asynchronous Terminals and Printer Processes Programming Manual

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PRINTER PROGRAMMING CONSIDERATIONS

Resetting the 5573 Printers

| Resetting the 5573 Printers

| Resetting the printer ensures that the I/O process and the

| printer are at a known default state. The I/O process performs

| a RESET only once for a device, when the device is first

| opened. The I/O process does not perform another RESET even if

| multiple opens exist on the device. In addition, the I/O process

| can perform a RESET only for operations not controlled by the

| spooler. For operations controlled by the spooler, the spooler

| issues a SETMODE 28 at the beginning of each job.

| The RESET or SETMODE 28 sets all the SETMODE parameters to their

| SYSGEN values and causes the driver to issue

ESC

E to the printer.

| The

ESC

E resets the printer to the front panel defaults, the VFC

| table to its default, and causes a conditional physical top of

| form.

| SETMODE 29 is the only SETMODE parameter not affected by a

| SETMODE 28 operation or by the RESET command when the device is

| first opened. SETMODE 29 sets auto answer or control answer.

| Do not press the RESET button on the printer during printing.

| Doing so can cause data to be lost. Pressing the RESET button

| does not reset programmable parameters or top of form, nor does

| pressing the RESTORE button on the printer.

| NOTE

| You must use the spooler when printing on a 5573 printer.

| The spooler flushes the buffer when the device is closed

| ensuring that all data in the buffer is printed. If the

| spooler is not used, you may lose the last line of data.

| Direct-Access Vertical Format Unit

| The 5573 printers do not support DAVFU or VFU downloading.

| Printing Restrictions for 5573

| The 5573 printer may be unavailable for up to 30 seconds between

| the closing of one job and the start of another. To ensure the

| printer has completed a job and has reset its internal parameters

| properly, you should allow more than 30 seconds between jobs.

7-36 November 1987