GE 345

CHAPTER 1: COMMUNICATIONS GUIDE ETHERNET INTERFACE
345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 1–59
NOTE
NOTE:
The settings marked "*" are the same as those used by the DNP 3.0 protocol to configure
the point mapping from address 43878 to 44101.
The IEC 60870-5-104 Deadbands settings are used to determine when to trigger
spontaneous responses containing M_ME_NB_1 analog data. Each setting represents the
threshold value for each M_ME_NB_1 analog point.
For example, to trigger spontaneous responses from the 345 when a current value
changes by 15 A, the "Analog Point xx Deadband" setting should be set to 15. Note that
these settings are the default values of the deadbands. P_ME_NB_1 (parameter of
measured value, scaled value) points can be used to change threshold values from the
default, for each individual M_ME_NB_1 analog point.
There are three ways to send the measurands to the Master station. As the measurands
will be part of the General Group and Group 2, when a general interrogation or group 2
interrogation takes place, all the measurands will be included in the response. There is also
a cyclic data period setting where the scan period is configured to send the measurands to
the Master. The final way is to send the measurands spontaneously when a deadband
overflow takes place.
Groups of Data
The data will be organized in groups in order to provide values when the controlling station
requests by general or group interrogation.
Group 1 will be set by the 64 Single Points(M_SP).
Group 2 will be set by the 32 Measured values (M_ME).
These 64 Single Points and 32 Measured Values will also be sent as a response to a General
Interrogation.
Integrated Totals (M_IT) will have its own Counter Group 1 and these will be sent as a
response to a General Request Counter
Settings Range Default
Binary Input Point 0 Entry* FlexLogic Operands 0
Binary Input Point 63 Entry* FlexLogic Operands 0
Analog Input Point 0 Entry* 0 to 28 0
Analog Input Point 0 Scale Factor* 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000,
100000
1
Analog Input Point 0 Deadband* 0 to 100000000 30000
Analog Input Point 31 Entry* 0 to 28 0
Analog Input Point 31 Scale Factor* 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000,
100000
1
Analog Input Point 31 Deadband* 0 to 100000000 30000
Binary Output Point 0 ON* Virtual Input 1 to 32 and Force Coils 0
Binary Output Point 0 OFF* Virtual Input 1 to 32 and Force Coils 0
Binary Output Point 15 ON* Virtual Input 1 to 32 and Force Coils 0
Binary Output Point 15 OFF* Virtual Input 1 to 32 and Force Coils 0