Pressure Systems 9022 - Manual (Page 73)

Pressure Systems, Inc. NetScanner™ System (9016, 9021, & 9022) User’s Manual
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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).