ABB RELION REF615R, Manual

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1MRS240173-IB B
Section 4
1x Registers
REF615R 21
DPU2000R Modbus Point List Mitigation Manual
Section 4 1x Registers
4.1 Function code 2 (Read input status)
REF615R maps status information into two types of blocks as in DPU2000R. One is
single-bit block, the other one is double-bit block. The single-bit block only provides status
information, and the double-bit block provides both of the status and momentary change
information.
REF615R maps the input status in the same register assignments and sequences as in
DPU2000R. For the points without IEC61850 paths and their readings can only be
obtained by PCM600 ACT configurations, their original register addresses in DPU2000R
are reserved. Their new addresses are the addresses of those generic logic points.
For the Modbus logical input points in DPU2000R unable to be mapped in REF615R, their
original Modbus address assignments are reversed.
4.1.1 Logical input block (single-bit data)
REF615R maps the single-bit logical input points in the same register assignments and
sequence as in DPU2000R.
Table 5: Mitigations of Modbus registers mapping for the logical input block in single-bit block
Please check "Feeder Protection and Control REF615R Modbus Point List
Manual", document ID: 1MRS240052-IB to find the Modbus point list
mapping of the generic logical points.
Seal-in (latch) points in the logic input block are not directly mapped
because they do not have IEC 61850 paths. The alternatives are either to
read momentary change detect (MCD) bit from their corresponding points
in the double-bit logical input block, or to use the generic set reset logic to
program the seal-in point using PCM600 ACT. One example is given in
Section 7.1.6, Figure 7.
DPU2000R
register
addr.
DPU 2000R description
REF615R
register
addr.
IEC 61850 path
Comments on REF615R
Modbus points mapping
10001 Breaker Status (52a = 1 52b = 0 CB Close)
(52a)
10001 CTRL.CBCSWI1.PosCls.stVal Apparatus close position