Rockwell Automation 2755-G6-D Scanner with RS-232 Option - Manual (Page 56)

Message Format Parameters
Chapter 7
7–3
A suffix is a subset of the postamble. Like the prefix,
it is normally assigned to a specific ASCII code.
Examples of suffixes are CR (Carriage Return) and
LF (Line Feed).
Scan the suffix appropriate for your application.
MA Suffix=None
MB Suffix=ETX
Suffix=CR MC
MD Suffix=LF
ME Suffix=HT
MF Suffix=CR and LF *
Suffix