Seneca KEY Series - Iec61850 Implementation on the Key Series Gateways; Basic SCL Structure; Modbus Variables; Dataset

User Manual
IEC 61850 – MODBUS
GATEWAYS
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MI00705-0-EN
Page 12
IEC61850 IMPLEMENTATION ON THE “KEY” SERIES GATEWAYS
Given the complexity of the IEC61850 protocol, the “KEY” series gateways implement an IEC61850 server with
some simplified features that we list:
Basic SCL structure
The basic SCL structure is constant and is represented by 3 logical nodes:
GGIO1 represents the logical Node Generic IO 1, here all the variables coming from the Modbus buses will be
present.
LLN0 represents the logical node zero. Contains the data relating to the Intelligent Electronic Device (IED
family KEY)
LPHD1 represents the physical logic node 1. Contains information relating to the physical device.
Modbus variables
When variables are added (reads/writes from the Modbus protocol) these will always be added to the logic
node GGIO1. For example, for the “VAR1” variable we have:
DataSet
For the Report Data Blocks it is necessary to define one or more sets of variables, this is done through the
definition of the datasets.