Compuprint MDP 30FB Programmer's Manual page 102

r = Bar code rotation
r Selection
0 No rotation
1 Rotation at 0°
2 Rotation at 90°
3 Rotation at 180°
4 Rotation at 270°
o = Check digit inserted as last character of the received string according to the bar
code
q = Horizontal graphic density of the bar code
q Selection
0 1/60"
1 1/180"
b = Narrow bar width in n/180", 3 < b < 18
s = Narrow space width in n/180", 3 < s < 18
B = Wide bar width in n/180", 6 < B < 72
S = Wide space width in n/180", 6 < S < 72
i = Spacing between characters in n/180", 3 < i < 72
EM = Check sequence terminator
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