Section 2  Modbus data mappings
2.1  Overview
This document describes the Modbus data points and structures available in the
protection relay. The point lists describe a superset of all data available through the
standard configuration/s including the optional functionalities.
The majority of the Modbus data points are valid for all standard configurations. Some
data points are standard configuration-dependent or optional application-dependent
and thus not available in each protection relay. The unavailable, that means, unused,
data points always return value 0 when they are read. The configuration-dependent
and optional data do not overlap.
2.2  Supported functions
2.2.1  Supported functions in RET615
Table 2: Supported functions
Function
IEC 61850 A B C D E F G H
  TE01 TE02 TE03 TE04 TE05 TE06 TE07 TE08
Protection
Three-phase non-directional overcurrent
protection, low stage
PHLPTOC1
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
PHLPTOC2
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
Three-phase non-directional overcurrent
protection, high stage
PHHPTOC1
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
PHHPTOC2
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
Three-phase non-directional overcurrent
protection, instantaneous stage
PHIPTOC1
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
PHIPTOC2
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
Non-directional earth-fault protection, low
stage
EFLPTOC1
1 
HV
 
1 
HV 1)
 
1 
HV
 
1 
HV 1)
 
EFLPTOC2  
1 
LV
 
1 
LV 2)
 
1 
LV
 
1 
LV 2)
Non-directional earth-fault protection, high
stage
EFHPTOC1
1 
HV
 
1 
HV 1)
 
1 
HV
 
1 
HV 1)
 
EFHPTOC2  
1 
LV
 
1 
LV 2)
 
1 
LV
 
1 
LV 2)
Negative-sequence overcurrent protection NSPTOC1
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
NSPTOC2
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
1 
LV
Residual overvoltage protection ROVPTOV        
2 
HV
2 
HV
2 
HV
2 
HV
Three-phase undervoltage protection PHPTUV        
2 
HV
2 
HV
2 
HV
2 
HV
Three-phase overvoltage protection PHPTOV        
2 
HV
2 
HV
2 
HV
2 
HV
Three-phase thermal overload protection,
two time constants
T2PTTR
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
1 
HV
Stabilized and instantaneous differential
protection for two-winding transformers
TR2PTDF 1 1 1 1 1 1 1 1
Numerically stabilized low-impedance
restricted earth-fault protection
LREFPNDF
1 
HV
1 
LV
   
1 
HV
1 
LV
   
Table continues on next page
1MRS756878 H Section 2
Modbus data mappings
RET615 15
Point List Manual