User`s guide

4.4.1.2. PC-NET from SYS 500 8.4.x
If the previous version is SYS 500 8.4.5 SP1, SYS 500 8.4.4 SP4, SYS 600 9.0,
COM 500 4.0 SP1 or older, following upgrade notification must be taken into
account:
*
After the upgrade, each instance of PC-NET will allocate 16 Megabytes of
memory. PC-NET instance in versions SYS 500 8.4.4 SP1, COM 500 4.0
(without service packs) and older allocated 4 Megabytes of memory. In versions
COM 500 4.0 SP1, SYS 500 8.4.5 SP1, SYS 500 8.4.4 SP4, SYS 600 9.0 or
older but newer than SYS 500 8.4.4 SP1 the allocated amount is 8 Megabytes. In
principle, the usage of a newer version may lead to lack of memory if the
computer resources stay unchanged in the upgrade.
If the previous version is SYS 500 8.4.4 (without service packs), COM 500 4.0
(without service packs) or older, following upgrade notification must be taken into
account:
*
In DNP 3.0 slave protocol, the response handling of an incoming class 1/2/3/0
request from the DNP 3.0 master is handled differently and order of the
datapoints in the response is different. It is possible that the new behaviour can
be seen in the process pictures of the master also.
If the previous version is SYS500 8.4.3 SP3, COM 500 3.0 SP1 or older, following
upgrade notifications must be taken into account:
*
In IEC60870-5-101 slave protocol, the RM attribute bit 4 of station object
controls the acceptance of the incoming control commands from the master. In
the newer version the default behaviour is that a execute command is not
accepted without preceding select. The behavior stays unchanged if bit 4 of the
attribute RM is set, see corresponding manual for more information.
*
In IEC60870-5-101 slave protocol, the TC attribute of the station object controls
the handling of the incoming time synchronization. In the newer version the
default value is 1 which causes the message contents to be sent to a process
object also. See corresponding manual for more information.
*
In any serial protocol, the line attribute RY presented in version 8.4.4 also
controls the behaviour of the RTS-signal of the RS-232 port. For RocketPort
serial cards, the default value RY=1 will cause the RTS signal to be active one
character longer compared with the previous version. This is usually harmless.
With setting RY=0 the behaviour is unchanged with RocketPort. With a standard
serial port of PC, the behaviour is unchanged with setting RY=1 and depending
on the used modem hardware, setting RY=0 does not necessarily work at all.
If the previous version is a DCP-MUX unit and the needed protocols can be found
from the list presented in Section 4.4. Communication units, the upgrading is
possible. The existing line and station attribute configuration must be converted to a
SCIL script if the DCP-MUX has been configured with a NETCONF program. The
DCP-MUX card is replaced with a multi-port serial card.
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SYS 600 9.2SYS 600 9.2
MicroSCADA Pro
Installation and Administration Manual
1MRS756115