1MRS240173-IB B
Section 5
4x Registers
REF615R
33
DPU2000R Modbus Point List Mitigation Manual
5.1.3
RMS Load Current/Angular Values Block
REF615R has mapped the majority of load current/angular value registers the same as in
DPU2000R. The default scaling of the current and voltage readings are 100 as default, it
is because different from providing primary value in ampere or KV as DPU2000R Modbus
server did, REF615R Modbus server provides current and voltage readings as per unit.
To change the scaling of the default measurement readings in per unit to primary readings,
one can use PCM600 CMT tool to configure the scaling factors.
For example as shown in Figure 5, to read primary ampere of load current A at address
40257, one can change the signal's default scaling to 600 after finding out the CT's primary
ampere rating is 600A.
Figure 5:
Snapshot on scaling load current A from CMT to read primary current in
ampere.
Another way is to remap the register for "Load Current-A" to a UDR as described in
Section 5.1.1.2.3 and Section 5.1.1.2.4.
Table 12:
Mitigations of Modbus mappings for RMS load current/angular values block
REF615R provides another set of 6 system status registers (SSR1, SSR2,
SSR3, SSR4, SSR5, SSR6). REF615R also provides device information
registers. Please check "Feeder Protection and Control REF615R Modbus
Point List Manual", document ID1MRS240052-IB, and "REF615R
Modbus Communication Protocol Manual", document ID
1MRS240047-IB to find out more information.
DPU2000R
register
addr.
DPU 2000R description
Scale
REF615R
register
addr.
Scale
IEC 61850 path
Comments on
REF615R Modbus
points mapping
40257
Load Current A
1
40257
100
LD0.CMMXU1.A.phsA.instCVal.mag.f
reading per unit value
by default
40258
Load Current A Angle
1
40258
1
LD0.CMMXU1.A.phsA.instCVal.ang.f
40259
Load Current B
1
40259
100
LD0.CMMXU1.A.phsB.instCVal.mag.f
reading per unit value
by default
40260
Load Current B Angle
1
40260
1
LD0.CMMXU1.A.phsB.instCVal.ang.f
40261
Load Current C
1
40261
100
LD0.CMMXU1.A.phsC.instCVal.mag.f
reading per unit value
by default
40262
Load Current C Angle
1
40262
1
LD0.CMMXU1.A.phsC.instCVal.ang.f
40263
Load Current N
1
40263
100
LD0.RESCMMXU1.A.res.instCVal.mag.f
reading per unit value
by default
40264
Load Current N Angle
1
40264
1
LD0.RESCMMXU1.A.res.instCVal.ang.f