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Overlay function set commands, An example of overlay nesting – Compuprint 4247-Z03 Programmer Manual User Manual

Page 213

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Table 7. Code 128 Character Set (EBCDIC) (continued)

Character

Hex

Character

Hex

Character

Hex

Character

Hex

ENQ

2D

"

7F

{

C0

3

F3

ACK

2E

a

81

A

C1

4

F4

BEL

2F

b

82

B

C2

5

F5

SYN

32

c

83

C

C3

6

F6

EOT

37

d

84

D

C4

7

F7

DC4

3C

e

85

E

C5

8

F8

NAK

3D

f

86

F

C6

9

F9

SUB

3F

g

87

G

C7

FNC3

FA

SP

40

h

88

H

C8

DEL

FF

Note: All START, STOP, SHIFT, and CODE characters are generated by the printer in order to produce

the shortest bar code possible from the given data.

Overlay Function Set Commands

The overlay function set contains the commands the printer uses to store, delete, and present information
in the overlay memory of the printer. These commands are independent of any specific data types used in
defining the overlay.

The overlay is contained between the Begin Overlay (BO) command and the End Page (EP) command
and cannot contain itself. Overlays can be nested; that is, overlays can contain other overlays. The depth
of the overlay nesting cannot exceed five levels.

Figure 29 shows an overlay nesting.

The following commands are the overlay function set:

Command

Code

Description

BO

D6DF

Begin Overlay

DO

D6EF

Delete Overlay

IO

D67D

Include Overlay

The following pages describe the overlay function set commands.

Figure 29. An Example of Overlay Nesting

Chapter 4. IPDS Programming Information

193

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