Worth Data 7100 RF Terminal Series Owner's Manual page 85

Divide the sum by 43: (thus the name modulus 43)
108/43 = 2 with a Remainder of 22
Find the character corresponding with the remainder.
M (value 22) is the CHECK CHARACTER
The data becomes 123XYZM, with M added as the Mod-43 check character.
Full ASCII Extension to Code 39
"Full-ASCII Code 39" expands the Code 39 character set to include all 128 ASCII characters. Symbols 0-9, A-Z and punctuation
characters and are identical to their Code 39 representations. Lower-case letters, additional punctuation characters, and control
characters are represented by sequences of two Code 39 characters.
This table depicts the Full ASCII character set as a function of Code 39 characters:
Accumulate Mode
Accumulate Mode is an option allowing the RF Terminal to accumulate multiple bar codes in its buffer, then transmit them to the
computer as if they had been a single bar code. This is useful for entering quantities and other variable data.
Accumulate Mode works with Code 39, Code 93 and Code 128 only and can't be used with a check digit. When the RF Terminal
reads a bar code with a space as the first character, it beeps and buffers the data without transmission. It continues to read and
buffer bar codes (up to 40 characters) until it reads a bar code without a leading space. Once it reads this last bar code, the entire
buffer (including that last code) is transmitted as one long bar code. A "double-minus" sign (--) bar code clears the buffer. The
ENTER code on this Barpad is a Code 39 Start/Stop Character only.
ASCII Code 39 ASCII Code 39
NUL %U SP Space
SOH $A !
"
STX $B
ETX $C #
EOT $D $
ENQ $E %
ACK $F &
'
BEL $G
BS $H (
HT $I )
LF $J *
VT $K +
FF $L ,
CR* $M - - or /M
SO $N . . or /N
SI $O /
DLE $P 0 0 or /P
DC1 $Q 1 1 or /Q
DC2 $R 2 2 or /R
DC3 $S 3 3 or /S
DC4 $T 4 4 or /T
NAK $U 5 5 or /U
SYN $V 6 6 or /V
ETB $W 7 7 or /W
CAN $X 8 8 or /X
EM $Y 9 9 or /Y
SUB $Z :
ESC %A ;
FS %B < %G
GS %C = %H
RS %D >
US %E ?
Full ASCII Table
ASCII Code 39 ASCII
@ %V
/A A A a
/B B B b
/C C C c
/D D D d
/E E E e
/F F F
/G G G g
/H H H h
/I I I
/J J J
/K K K k
/L L L
M M m
N N n
/O O O o
P P p
Q Q q
R R r
S S s
T T
U U u
V V v
W W w
X X x
Y Y y
/Z Z Z z
%F [ %K {
\ %L
] %M }
%I ^ %N ~
%J _ %O DEL
80
Code 39
'
%W
+A
+B
+C
+D
+E
f +F
+G
+H
i +I
j +J
+K
l +L
+M
+N
+O
+P
+Q
+R
+S
t +T
+U
+V
+W
+X
+Y
+Z
%P
| %Q
%R
%S
%T, %X