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Data Communications
This mode is controlled with the following character sequences:
OLE STX
Starts transparency.
OLE ETX
Ends transparency.
or
OLE ETB
OLE OLE
Allows one DLE character to be sent. Note that this will vary with the parity
used.
OLE SYN
Allows one SYN character to be sent (for synchronous operation). Not in-
cluded in text or BCC.
OLE ENQ
Aborts current transmission. A BCC character is not expected.
Once in transparency mode, in order to send HP multipoint protocol control characters and
have them interpreted as control characters rather than binary data the control character
must be preceded by a single <OLE> character. Single <OLE> characters are seen as the
beginning of control sequences rather than data. The first <OLE> character of the above
sequences is never included in the BCC.
OLE insertion is not done for control characters that are not used as part of the protocol (such
~"'"
as <CR>, <LF>, <HT>, <VT>, <OCI>, or <DC2».
' : 9
The terminal always accepts transparent data. To cause it to send transparent data you use the
~~Xmi
tXpar"
field of the datacomm configuration menu described earlier in this section. If this
feature is enabled the terminal will ALWAYS send transparent data.
Note that whenever control character sequences are used in transparent mode they must have
proper parity or they will not be interpreted as control characters.
7-38
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