GE 350

2-24 SR3 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE
IEC 60870-5-103 SERIAL COMMUNICATION CHAPTER 2: RS485 INTERFACE
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.
44388 First ASDU First Analogue Entry Disabled F88
44389 First ASDU First Analogue Factor 1 F3
44390 First ASDU First Analogue Offset 0 F1
44391 First ASDU Second Analogue Entry Disabled F88
44392 First ASDU Second Analogue Factor 1 F3
44393 First ASDU Second Analogue Offset 0 F1
………
44412 First ASDU Ninth Analogue Entry Disabled F88
44413 First ASDU Ninth Analogue Factor 1 F3
44414 First ASDU Ninth Analogue Offset 0 F1
44415 Second ASDU Identification Type 3 or 9 F221
44416 Second ASDU Function Type <0 - 255 > F1
44417 Second ASDU Information Number < 0 - 255 > F1
44418 Second ASDU Scan Timeout < 0 - 1000> secs F1
44419 Second ASDU First Analogue Entry Disabled
44420 Second ASDU First Analogue Factor 1 F3
44421 Second ASDU First Analogue Offset 0 F1
…..
44443 Second ASDU Ninth Analogue Entry Disabled
44444 Second ASDU Ninth Analogue Factor 1 F3
44445 Second ASDU Ninth Analogue Offset 0 F1
44446 Third ASDU Identification Type 3 or 9 F221
……
44476 Third ASDU Ninth Analogue Offset 0 F1
44477 Fourth ASDU Identification Type 3 or 9 F221
……
44507 Third ASDU Ninth Analogue Offset 0 F1
Modbus Address Description Value Format