Chapter 5: Programming 5-47
The
RS232
Prefix
Byte
programming
mode
controls
the
use
of
prefix
bytes.
If
an
RS232
Prefix
Byte
is
used,
it
is
the
leading
character
in
each
message
sent
to
the
host
terminal.
Following
it
is
the
message
data.
Refer
to
the
“Parameter
Defaults”
section
earlier
in
this
chapter
for
the
factory
defined
default
value
of
each
programming
parameter.
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.
ASCII Code
The
ASCII
Code
parameter
permits
the
specification
of
what
ASCII
code
to
use
for
the
Prefix
Byte.
Enter
the
selection
by
scanning
the
appropriate
two
Hex
tags
(shown
in
the
ASCII
Code
Chart
in
Programming
chapter).
Any
value
from
01
through
0F
can
be
selected;
however,
the
recommendation
is
to
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).
Note:
ASCII
Code
parameter
for
the
RS232
Terminator
Byte
has
the
same
function.
RS232 Terminator Byte
25786
Terminator Byte 1
A
ASCII Code
B
0
Disable
1
Enable
0 - 7
Hex Character
(ASCII Code Chart)
0 - F
Hex Character
(ASCII Code Chart)
0
Default
3
Your Program
Terminator
Byte 1
A
RS-232
Terminator Byte
2
3
ASCII Code
B
NOTE:
Terminator Byte 1 is required on a
scale unit. If you select
Disable
, it is ignored and an
ETX (03) is sent.
Terminator Byte 2
C
ASCII Code
0
Disable
1
Enable
0 - 7
Hex Character
(ASCII Code Chart)
0 - F
Hex Character
(ASCII Code Chart)
Terminator
Byte 2
C
ASCII Code
0
Default
3
NOTE:
Terminator Byte 2 is a
direct entry only.
Summary of Contents for 74 OFX (7874)
Page 1: ...NCR RealScan 74 OFX 7874 Release 1 1 User Guide 25315 B005 0000 1822 Issue C...
Page 16: ......
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Page 248: ...A 2 Appendix A NCR Scanner Programming Tags Reset 11818 Default R0046 Programming Mode R0042...
Page 249: ...Appendix A NCR Scanner Programming Tags A 3 End R0043 Save and Reset R0044 Abort R0045...
Page 253: ...Appendix A NCR Scanner Programming Tags A 7 Hex 2 R0050 Hex 3 R0051 Hex 4 R0052...
Page 254: ...A 8 Appendix A NCR Scanner Programming Tags Hex 5 R0053 Hex 6 R0054 Hex 7 R0055...
Page 255: ...Appendix A NCR Scanner Programming Tags A 9 Hex 8 R0056 Hex 9 R0057 Hex A R0058...
Page 256: ...A 10 Appendix A NCR Scanner Programming Tags Hex B R0059 Hex C R0060 Hex D R0061...
Page 258: ......
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