
Revision C 16/01/96
Chapter 2 "PCL" - 96
Status Response
If a status request (command) is received, the printer produces the response data. The printer accumulates this data
in an I/O status buffer and saves the response in this buffer until a user reads it or you turn off the printer.
The printer clears the status responses when Printer resolution or Page protection or Emulation language is
changed.
The printer processes status requests and their related response in the order in which the printer receives them.
According to the internal printer operations, the number of responses the printer can accumulate is different. If
you use multiple applications or share the printer, you should read the response to a request before making a new
request.
You should use the Echo command so that your applications request will synchronize with the printer's responses,
because an earlier application might have requested a status and the printer might retain it.
A status response gets routed back to the I/O port that it was requested from.
Status response syntax
All of the status responses begin with "PCL", Carriage Return control code and a Line Feed control code. The
response is ended by a Carriage Return and a Line Feed control code. At the end of the transaction, status
responses are ended by a Form Feed Control code. The fundamental syntax for the status response is as shown
below.
PCL<CR> <LF>
INFO TITLE<CR><LF>
KEYWORDn=DATAn<CR><LF>
KEYWORDn=DATAn<CR><LF>
.
.
.
<FF>
TITLE, KEYWORDn, and DATAn are strings which differ according to the status readback command being
operated. One or more keyword lines related to the status readback response accompanies every status readback
response. Echo command response differs from this, and is as shown below.
PCL<CR><LF>
ECHO ValueField<CR><LF>
<FF>
ValueField is the decimal number which comes from the Echo command value field.
For future printers, keywords might be added. Applications in which the status readback is used should be made to
disregard lines with keywords they do not understand.
Содержание HL- SERIES
Страница 13: ...Revision A 16 01 96 Chapter 1 Introduction ...
Страница 16: ...Revision C 16 01 96 Chapter 2 PCL 1 Chapter 2 PCL ...
Страница 123: ...Revision C 16 01 96 Chapter 2 PCL 3 W width raster area 78 Y y offset raster 79 ...
Страница 124: ...Revision C 16 01 96 Chapter 3 PJL 1 Chapter 3 PJL Printer Job Language ...
Страница 180: ...Revision C 16 01 96 Chapter 4 Diablo 630 1 Chapter 4 Diablo 630 ...
Страница 200: ...Revision C 16 01 96 Chapter 5 EPSON FX 850 1 Chapter 5 EPSON FX 850 ...
Страница 237: ...Revision C 16 01 96 Chapter 6 IBM Proprinter XL 1 Chapter 6 IBM Proprinter XL ...
Страница 259: ...Revision C 16 01 96 Chapter 7 Bar Codes Control 1 Chapter 7 Bar Code Control ...
Страница 267: ...Revision C 16 01 96 Chapter 8 HP GL2 1 CHAPTER 8 HP GL 2 Graphics Language ...
Страница 280: ...Revision C 16 01 96 Chapter 8 HP GL2 14 220 END Sample 21 ...
Страница 328: ...Revision C 16 01 96 Chapter 9 HP GL 1 CHAPTER 9 HP GL Graphics Language ...
Страница 332: ...Revision C 16 01 96 Chapter 9 HP GL 5 1 3 2 Printing Area a b d c a b c d mm A4 4 5 5 5 Letter 6 5 5 5 Legal 6 5 5 5 ...
Страница 342: ...Revision C 16 01 96 Chapter 9 HP GL 15 Sample 68 ...
Страница 387: ...Revision C 16 01 96 APPENDIX A COMPALISON LIST 24 RESOLUTION 300 600 300 600 300 600 ...