User`s guide

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