Data Management; Digital States; Measurands; Modbus Memory Map - GE 350 Communications Manual

CHAPTER 2: RS485 INTERFACE

Data management

Digital states

Measurands

SR3 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE
The 3 Series relay supports a fixed profile and data that is configurable using the EnerVista
3 Series Setup program.
The data that can be configured are:
• digital states
• measurands
• commands.
Digital states in the relay may be mapped using the EnerVista 3 Series Setup program. By
default, states are mapped to information numbers proposed by the standard, but the
user may delete these mappings if desired.
All the mapped information will be sent as a response to a general interrogation like ASDU
1.
For the other states, the customer can assign:
1. Information Number <1..255>
2. Function Type <0..255>.
Settings Digital Status
Point 1 Entry Select entry from list
....
....
Point 64 Entry Select entry from list
This means that for each digital point 3 settings are required.
Example:
Modbus Address Description
43879 Point 1 Entry Digital Status
44223 Point 1 Entry Function Type
44224 Point 1 Entry Information Number
The "Point Entry Digital Status" reuses the DNP Binary Input 43029, 43030, ...
Some analog points are supported by the 3 Series relay with compatible information
numbers that have been identified in the device profile.
For the other measurands, it is possible to use the EnerVista 3 Series Setup to select the
desired point and assign the Identification Type (3 or 9), Function Type <0..255>, and
Information Number <1..255>.
If the user selects Identification Type 3 (ASDU 3) only four measurands are available for
configuration, but if Identification Type 9 (ASDU 9) is selected, up to nine measurands can
be sent in the IEC103 slave answer. For each measurand, all metering values that the 3
Series relay supports, are available in order to be mapped. There are 3 possible
configurable ASDUS.
For example, eDataVab is the index in the Modbus Memory Map.
Modbus Address Description
44384 First ASDU Identification Type
44385 First ASDU Function Type
44386 First ASDU Information Number
44387 First ASDU Scan Timeout
IEC 60870-5-103 SERIAL COMMUNICATION
Information Number Function Type
<0 – 255 > <0 – 255 >
<0 – 255 > <0 – 255 >
Value
0x8242 (Undercurrent Trip)
160
144
Value
3 or 9
<0 - 255 >
< 0 - 255 >
< 0 - 1000> secs
Format
FC134
F1
F1
Format
F221
F1
F1
F1
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