0X Registers; Function Code 1 (Read Coil Status); Logical Output Block (Single-Bit Data); Table 1. Mitigations Of Modbus Registers Mapping For The Logical Output Points In Single-Bit Block - ABB Relion REF615R Manual

1MRS240173-IB B
Section 3
3.1
3.1.1
DPU2000R
register DPU 2000R description
addr.
1 Breaker is Tripping (TRIP)
REF615R
DPU2000R Modbus Point List Mitigation Manual

0x registers

Function Code 1 (Read coil 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 output and 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 tool configurations, their original register addresses in DPU2000R
are reserved. Their new addresses are the addresses of those generic logic points.
Please check "Feeder Protection and Control REF615R Modbus Point List
Manual", document ID: 1MRS240052-IB to find out the Modbus point list
mapping of the generic logical points.
For the Modbus output and input status points in DPU2000R unable to be mapped in
REF615R, their original Modbus address assignments are reversed.
Seal-in (latch) points in the logic output 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 output 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.

Logical output block (Single-bit data):

REF615R maps the single-bit logical output points in the same register assignments and
sequence as in DPU2000R.
Table 1: Mitigations of Modbus registers mapping for the logical output points in single-bit block
REF615R
register
addr.
1
IEC 61850 path
LD0.TRPPTRC1.Tr.general
Section 3

0x registers

Comments on REF615R
Modbus points mapping
11