Cognitive Solutions A776 Manual De Usuario

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Chapter 6: DH emulation
154
A776 (B780) Programming Guide 
 
A776-PG00001 C 12/09
Each byte of data sent defines each column of the graphic to be printed. The first byte defines the column in the left 
margin, with the following bytes defining the columns to the right, for a total of up to 200 columns in the print line. 
The print line is printed unidirectionally. Graphics and text may be printed on the same line.
Use three Vertical Tab commands (0B) to overlap printing by half a dot with the next line. Each vertical tab advances 
the paper by 0.02083 inches, with three tabs advancing the paper by 0.062 inches.
Note:  This DH printer command provides compatibility with earlier DH model printers. It is generally not used for new 
applications. See the Graphics command (1E) for the more generally used command. 
Printer Status Commands
These commands enable the printer to communicate its status to the host computer.
The commands are listed numerically by hexadecimal code.
Status: 3 Bit
Transmits the status of the paper sensors and the condition of the printer. This command is processed immediately.
  Hexadecimal 
Decimal  ASCII 
  05 03 
5 3 
ENQ ETX 
The transmitted status is shown in the table:
  Bit 
 
 
1
  0 
Form Present   
Form Not Present
  1 
Paper Present   
Paper Not Present
  2 
Printer Is On-Line 
Fault Condition
Note:  This DH printer command provides compatibility with earlier DH model printers. It is generally not used for new 
applications. See the Status: 6 Bit command (1B 05) for the more generally used command.
Status: 6 Bit
Transmits the status of the paper sensors, cash drawers, forms clamp, and the condition of the printer. This command is 
processed immediately. The transmitted status is shown in the table below.
  Hexadecimal 
Decimal  ASCII 
  1B 05 
27 5 
ESC ENQ 
  Bit 
 
 
  0 
Form Present   
Form Not Present 
  1 
Paper Present   
Paper Not Present 
  2 
Printer Is On-Line 
Fault Condition 
  3 
Cash Drawer 1 Closed 
Cash Drawer 1 Open
  4 
Cash Drawer 2 Closed 
Cash Drawer 2 Open
  5 
Forms Clamp Closed 
Forms Clamp Open
Status-Firmware
Used for RS-232C printers only.  Causes the printer to return 3 bytes (000). 
  Hexadecimal  Decimal  ASCII 
  1B 56 
27 86 
ESC V