Marathon Computer UNIPRO V3.5 - Manual (Page 183)

MMI Product Documentation
Unipro 3.5 Process Control 1 Aug. 1997
Message Protocol
Format
AlCddddDLE
End of Transmission (EOT)
HEX(04).
L
RC is the result of
an XOF function
performed on all
previous characters
in
the message.
Delimiter marks the
end of DATA and
signals the upcoming
EOT character.
NULL HEX(00) or
Backspace HEX(08)*
*If LRC was
going to be on EOT HEX(04)
then D =
HEX(08).
Data character,
definition based on
the
C
(command)
c h aracter.