MetroSelect™
H-9
Disable Control Set #1
Enable Control Set #1
Control Sets
In general, standard bar code symbologies will only encode the ASCII character set. Function keys, arrow keys and
many other “extended” keys on an IBMcompatible keyboard do not translate to ASCII characters. One method of
“bar coding” the extended keys is to substitute the extended key codes when a specific ASCIIcontrol character is
found in the bar code stream. The Control Sets are specific translations of the ASCII (HEX) set.
Control Set #1
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
Null
SOH
STX
ETX
EOT
ENQ
ACK
BEL
BS
TAB
Numeric Keypad
Num Lock
Down
Numeric Keypad-
Insert
Delete
System Request
Tab
ASCII (HEX) ASCII Control Extended Key
416484 416404
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