ABB REG316 4 Series Operating Instructions Manual page 806

ABB Switzerland Ltd
10.3. Changes in Version 5.1 in relation to Version 5.0
10.3.1. Distributed input/output system RIO580
From Version V5.1, the software supports the distributed
input/output system RIO580. The latter comprises a number of
distributed input/output units that are connected to an RE.316*4
device via an MVB (multipurpose vehicle bus) and an MVB PC
board. Refer to Data Sheet 1MRB520176-Ben and Operating
Instructions 1MRB520192-Ben for further details.
10.3.2. Year 2000 conformity
With the exception of the VDEW version, for which the synchroni-
sation of the time will not function via the VDEW bus in the year
2000, all Version V5.1 devices are fully immune to the year 2000
problem.
10.3.3. 'LDU events' function
The 'LDU events' function is also now available when the HMI is
operating off-line.
10.4. Changes in Version 5.1a in relation to Version 5.1
10.4.1. 'I0-Invers' function
The 'I0-Invers' is always enabled regardless of the software key
in use.
10.5. Changes in Version 5.1b in relation to Version 5.1a
10.5.1. 'Min-Reactance' function
The underreactance function can now also be connected to
Y-connected v.t's.
10.6. Changes in Version 5.1c in relation to Version 5.1b
10.6.1. Year 2000 conformity
All devices are immune to the year 2000 problem from Version
V5.1c onwards.
10-4
REG 316*4 1MRB520049-Uen / Rev. G