Appendix G – Bar Code Details 
 
238  Class Series 2 Programmer’s Manual 
W1m / W1M:  Australia Post 4-State Bar Code  
 
Length: 37, 52, or 67 bars 
 
Usage: This symbol is used for processing mail in the Australia Post System. The symbol 
is 37, 52 or 67 bars in length, and the height and ratios are fixed according to the 
specification (see “Customer Barcoding Technical Specifications” from Australia Post for 
more information). 
 
Syntax for the Australia Post 4-State Bar Code (spaces added for readability): 
 
a W1 m c d eee ffff gggg hh iiiiiiii j…j 
 
Where:  
 
Field  Valid Inputs  Meaning 
a 
1,2,3, and 4  Rotation 
W1 
W1  Fixed value, extended bar code set 
m 
m and M 
Lowercase selects the Australia Post bar code, and 
uppercase selects the Australia Post bar code with a 
hu
man readable field. 
c 
0 Not used. 
d 
0 Not used. 
eee 
000 Not used. 
ffff 
0000 to 9999  Label position, row 
gggg 
0000 to 9999  Label position, column 
hh 
11, 87, 45, 92, 59, 62, 
44 
Format Control Code (FCC): 
 
FCC Value  Resulting Format 
11  Standard Customer Bar Code 
87 Routing Bar Code 
45  Reply Paid Bar Code 
92  Redirection Bar Code 
59  Customer Bar Code 2 
62  Customer Bar Code 3 
44 Reserved 
 
iiiiiiii 
00000000-99999999  8-digit Delivery Point Identifier (DPID) 
j…j 
0-9, a-z, A-Z, #, space
Optional – Customer information, Bar Code 2 or 3 (Bar 
Code 2 has a maximum of 8 digits or 5 alphanumeric 
characters, while Bar Code 3 has a maximum of 15 digits 
or 10 alphanumeric characters), where if all numeric then 
data will be encoded in N-type; otherwise, C-type will be 
used. 
 
 
Example 1: 
 
The following example prints a standard Customer Bar Code using a DPID of 
“39987520”: