Experimental Physics and
Industrial Control System

"Brian McAllister" <[email protected]> · Thu, 07 Nov 2002 12:34:51 -0500

>>> On 11/7/2002 at 11:15:21 CST, Ned Arnold wrote:

  > 2) If you can do without strings, use a longout record that can then
  > fanout to calc records and mbbo's to determine the appropriate action.

If the selection you want is done by setting 22 individual *bits* (rather
than 22 *values*), there should be an alternative using the mbboDirect
record, working through the fields for the individual bits.

Unfortunately, when mbboDirect was created from mbbo, VAL was defined as
DBF_USHORT, instead of DBF_ULONG, and only 16 bit fields were added.  I've
thought about adding another 16 bit fields (using B10 -> B1F so the
existing field names don't have to change), but I'm not sure of the
consequences of changing VAL from SHORT to LONG for existing clients.

----
Brian McAllister                    Controls Programmer/Beam Physicist
[email protected]                        MIT-Bates Linear Accelerator
(617) 253-9537                                           Middleton, MA

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System