User`s guide

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When "844_COMPATIBLE_MIRRORING" is set (in revision 8.4.5, or later), the
mirroring works with an 8.4.4 application, and also with a newer application that
has specified "844_COMPATIBLE_MIRRORING". However, it does not work
with an 8.4.5 or later application without "844_COMPATIBLE_MIRRORING".
Using "844_COMPATIBLE_MIRRORING", the upgrading can be done system by
system without disturbing the operation of the network. In this case, each new node
that is added to the network later must set "844_COMPATIBLE_MIRRORING" as
well.
The setting of "844_COMPATIBLE_MIRRORING" does not affect the
functionality of the program or cause any decrease in performance.
4.1.2. Upgrading from revision 8.4.5 SP1 or 9.0
COUPLE_AUDIO_ALARMS_AND_PRINTOUTS
Generation of audio alarms has been changed in SYS 600 revision 9.1 and in
SYS 500 revision 8.4.5 SP2. Audio alarms and alarm printouts are now generated
independently of each other. In earlier revisions, an audio alarm was generated only
when an alarm row was printed on the event printer.
When "COUPLE_AUDIO_ALARMS_AND_PRINTOUTS" is set, the audio
alarms of the application are generated as in earlier program revisions.
4.1.3. Upgrading from revision 8.4.3
DONT_RECALCULATE_AL_AFTER_ALARM_BLOCKING
Since revision 8.4.4, the alarm state is recalculated when AB is set back to 0.
However, neither alarm printouts nor event channels are activated (they are not
activated when AB is set to 1, neither).
"DONT_RECALCULATE_AL_AFTER_ALARM_BLOCKING" may be set if the
application, for a reason or another, does not want this new behaviour.
NO_ALARM_BY_OR_AND_OF
Since revision 8.4.4, the protocol specific attribute OR (Out of Range) and OF
(Overflow) value 1 generate an alarm (cf. OS value 1, or FAULTY).
"NO_ALARM_BY_OR_AND_OF" may be set if the application, for a reason or
another, does not want this new behavior.
MicroSCADA Pro
Installation and Administration Manual
SYS 600 9.2SYS 600 9.2
1MRS756115