Chapter 6
Message Format Parameters
Prefix
6–2
A prefix is a subset of the preamble normally
formatted to some industry standard. It is represented
by a specific ASCII code. An example of a prefix is
the STX (Start of Transmission) code.
Scan the appropriate prefix label.
IA
IB
IC
Prefix=None *
Prefix=STX
Prefix=SOH
Pref