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Chapter 7: Programming 7-45
RS-232 Prefix Byte
The RS-232 Prefix Byte programming mode controls the use of prefix
bytes. If you use an RS-232 Prefix Byte, it is the leading character in
each message sent to the host terminal. Following it is the message
data.
Defaults
Parameter Default Value
Prefix Byte Disable
ASCII Code 02
Specific Program Parameters
Prefix Byte
The Prefix Byte parameter contains two selections: Disable and Enable.
Scan the Hex 0 tag to disable the Prefix Byte, or the Hex 1 tag to enable
it. The default is Disable.
ASCII Code
The ASCII Code parameter permits you to specify what ASCII code to
use for the Prefix Byte. Enter your selection by scanning the
appropriate two Hex tags (shown in the
ASCII Code Chart
). You can
select any value from 01 through 0F; however, the recommendation is
that you use the Start Of Text (STX) ASCII Code which is 02 Hex. Scan
the two appropriate Hex tags (Hex 0 through Hex 7 for the first
character and Hex 0 through Hex F for the second). The default for this
parameter is 02.