Measurement Specialties 9116 - Manual (Page 67)

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.