Pressure Systems, Inc. Model 9116 User’s Manual
Page 58
www.PressureSystems.com
Command ‘c’ — Sub-command Index 05:
Select Data in a Stream
This sub-command sets options that cause a specified stream to deliver specific kinds of
information to host. By default, only Pressure EU data are delivered for the channels already
specified by the “
00
” command.
Command
“
c 05
st bbbb
”
‘c’ is the
command
letter
‘05’ is the
sub-command index
(‘
ii’
) for
Select Data
.
‘
st
’ is the
stream id
digit (1, 2, or 3, (0 not allowed)
‘
bbbb
’ is the hex option field (bit map) to select which options will be
returned in the data stream (see table)
NOTE: all parameters are separated by a
space
character
.
Response
“
A
”
‘A’ is the
acknowledge
letter
Description:
If this sub-command is never executed for a particular stream, then
Pressure
EU
Data
are delivered (by default) in that stream following the fixed format binary
header
(
tssss
as described by the “
01
” sub-command). However, this sub-
command
may
also
delete
these default pressure readings from a stream (by
not
specifying them) as well as
add
other
selected acquired data to a stream (by
specifying
them).
The
bit map values
(shown in the following table) may be added together to
specify
all
the actual data groups that will be delivered in each packet of the
specified stream. The first two table entries, if their “bits” are specified, will
cause two-byte binary (16-bit, big endian)
status
values to be delivered in the
stream packet (immediately following the binary stream header). The third table
entry, if specified, will cause the
Pressure EU Data
to be delivered (next), per
the specified format (
f
), and for just the channels specified in the configured
stream. The remaining table entries will cause other
special
data groups (i.e.,
raw pressures and EU temperature values, also in A/D counts or voltage forms)
to also be delivered in each stream packet. Each of these
special
data groups is
also output, if its “bit” is specified, in the order of its table entry (within the
packet). Each group will also have a datum per the specified channels, and be in
the specified format (per
f
).
Note
Selecting too many other data groups will compromise module
performance.
