Commands - GE 350 Communications Manual

CHAPTER 2: RS485 INTERFACE

Commands

350 FEEDER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
Modbus Address Description
44446 Third ASDU Identification Type
... ...
44476 Third ASDU Ninth Analogue Offset
In the measurands configuration screen, with each selected measurement, a Factor and
an Offset must be configured.
• The Factor is a multiplier factor.
• The Offset is an offset factor to be applied to the relay measurement to make the final
measurement calculation to be sent to the master
The factor and offset parameters allow the user to perform different scaling in the relay
measurements. The final measurement sent to the IEC103 master will be: "a*x+b", where
"x" is the relay measurement, "a" is the multiplier factor and "b" is the offset.
The measurands will be sent to the primary station as a response to a class 2 request.
There is a Timeout configurable with increments of 100 ms, between 0 and 60 min, in order
to configure the desired interval.
All the commands and virtual inputs are available to be mapped using the EnerVista Setup
program. It is possible to choose the desired command for the ON state and the same or
different command for the OFF state.
The user is able to select the Information Number <1..255> and the Function Type <0..255>
command mappings, but the Identification Type 20 (General Commands) is fixed.++ There
are 32 configurable commands.
In this case it will be necessary to define a new format.
For example, FC500:
Description
Virtual Input 1
Virtual Input 2
...
Virtual Input 32
Reset
Open
Close
Display Msg
Modbus Address Description
Command 1 Function Type
Command 1 Information Number
Command 1 Operation ON
Command 1 Operation OFF
...
Command 16 Function Type
Command 16 Information Number
Command 16 Operation ON
Command 16 Operation OFF
The "Command Operations ON and OFF" reuse the DNP Binary Outputs 43189, 43190,
...
IEC 60870-5-103 SERIAL COMMUNICATION
Value
...
Value
1
2
32
33
34
35
36
Value
<0 – 255 >
< 0 – 255 >
2
8
<0 – 255 >
< 0 – 255 >
6
34
Format
...
Format
F1
F1
FC500
FC500
F1
F1
FC500
FC500
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