The Allen Bradley Driver (abDrv) in EPICS 3.12.2 and earlier may
fail doing btReads and btWrites with new versions of the 6008-SV2R
scanner. This does NOT impact ordinary bi, bi, ai, ao support.
It will only cause a problem if you have written special support
that issues btRead or btWrite commands to abDrv. I found
the problem when I started using the new scanner with special DCM
support I wrote.
Below is a complete list of changes that will be available in the new
version of abDrv. If anyone needs the new version imediately contact me.
The one-line documentation has already been changed.
Marty Kraimer
Allen Bradley Driver
Analog Output Block Transfers were being requested too frequently
If link_status command fails (3 times in succession) adapters
are now immediatly declared down.
For btRead and btWrite, The driver now enforces a timeout of 5 seconds
which is 1 second more than scanner itself enforces. This is so that
if scanner throws away a BT request it will still timeout.
For btRead and btWrite is is no longer permissible to issue a
new btRead or btWrite from tha callback routine.
The on line doc has the following two changes:
abConfigBaud has arguments (link,number) (Old doc was wrong)
Now states that new btRead/btWrite can NOT be ussued from callback.
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