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7193 Owner’s Guide Chapter 5: Communication

August 1998 39

Parallel Interface

Parallel Protocol

The 7193 uses a standard PC-compatible parallel interface. The illustration shows the

timing diagram for the interface protocol.

B U S Y

ACK

D A T A

STRO BE

0.5 µs (Min.)

1.0 µs (Min.)

0.5 µs (Min.)

0.08 µs (Min.)

S ee N o . 1

A pp. 0.06 µs

ACK/ will not go high until STROBE/ goes high.

When the printer is not ready to receive more data, ACK/ will be sent, but BUSY will

remain high.

When the power is turned on or the printer is reset, an ACK/ will be sent during

initialization.

Typical time from STROBE/ to ACK/ is approximately 44 µ seconds.

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 103 104

NCR 7193 Thermal Receipt 1
Contents 3
Contents 7193 Owner’s Guide 6
August 1998x 6
Communication Interfaces 7
Thermal Printhead 8
Ordering Thermal Paper 9
Ordering Other Supplies 9
Cleaning the Printer 10
What Is in the Box? 11
Choosing a Location 12
Setting Switches 12
Connecting Cash Drawer Cables 14
RS-232C Models 15
Parallel Models 16
Turning On the Printer 17
Loading and Changing Paper 18
Putting In the Paper Roll 19
Advancing Paper 20
Clearing Paper Jams 20
Testing the Printer 21
August 199816 22
August 199818 24
August 199820 26
Chapter 3: Solving Problems 27
Correcting Problems 28
Print is Light or Spotty 29
August 199824 30
Chapter 4: Diagnostics 31
Level 1 Diagnostics 32
Setting Printhead Resistance 33
Setting Partial Cut Distance 34
Running the Data Scope Mode 36
Testing Receipt Printing 37
Level 2 Diagnostics 38
Level 3 Diagnostics 38
Chapter 5: Communication 39
RS-232C Interface 40
XON/XOFF Protocol 41
DTR/DSR Protocol 41
Connectors 42
Cash Drawer Connectors 42
RS-232C Switch Settings 43
Switch Settings Description 44
Parallel Interface 45
Parallel Connectors 46
Parallel Switch Settings 47
August 199842 48
Chapter 6: Commands 49
Printer Function Commands 50
Hexadecimal Code Command Page 50
Graphics Commands 51
Printer Status Commands 52
Real Time Commands 52
Bar Code Commands 52
Command Descriptions 53
Clear Printer 54
Feed n Print Lines 54
Feed n Dot Rows 54
Add n Extra Dot Rows 54
Set Line Spacing to 1/6 Inch 56
Select Peripheral Device 57
Initialize Printer 57
Set Horizontal Tab Positions 57
Write to Non-Volatile Memory 60
Set Left Margin 60
Select Cut Mode and Cut Paper 61
Set Printing Area Width 62
Select Double-Wide Characters 62
Select Single-Wide Characters 63
Select Pitch (Column Width) 63
Set Print Mode 63
Select Character Set 64
Cancel User-Defined Character 65
Select Character Code Table 65
Set Bit Image Mode 67
Single-Density Graphics 68
Double-Density Graphics 68
Define Downloaded Bit Image 69
Print Downloaded Bit Image 69
Transmit Printer Status 71
Transmit Printer ID 71
Type ID (n = 2) 72
Hexadecimal Decimal ASCII 72
Transmit Status 75
Alternate Implementation 77
August 1998 73 79
Real Time Status Transmission 80
Real Time Request to Printer 82
7193 Clear Printer Command 83
Select Height of Bar Code 85
Print Bar Code 85
Select Width of Bar Code 87
August 199882 88
Appendix A: Specifications 89
Environmental Conditions 90
Dimensions and Weight 90
Printing Specifications 90
448 Dots 91
Ambient Temperature 92
Character Size 93
Code Page 437 Character Set 94
Code Page 850 Character Set 95
August 199888 96
Index 7193 Owner’s Guide 102
August 199894 102
Printed in U.S.A 104

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