# Forum: Analog Circuits 61850 standard : Numerical value of gocbRef and datSet in GOOSE message for overcurrent relay

 Author: varun maheshwari (Company: DEI) (varun_agr) Posted on: 2014-01-05 19:40

Rate this post
 0 ▲ useful ▼ not useful
Dear Sir
I had studied IEC 61850 standard and some relevant paper  for relay
communication purpose. As I came to know that we have to follow ISO/IEC
8802 -3 frame format for GOOSE. The last frame for this is APDU and this
APDU is according to ASN.1 /BER encoding rules and having 13 labels as
gocbRef, timeAlloedtoLive,
datSet,goID,t,stNum,sqNum,test,confRev,ndsCom,numDatSetEntres,allData,se
curity(  IEC 61850). Sir I got confused what is numerical value of
gocbRef as in papers and IEC61850 standard it is given in LLN0\$gocb ,
what is numerical value of datSet i.e. data set and allData. What are
different numerical values for these for different relays as
overcurrent,distance etc. Sir can I check this complete frame with
Wireshark software.
Sir I am working on FPGA based relays in my research project and we are
doing serial communication. Can we send this complete frame(after
setting numerical values as I don't know ) in serial and convert it to
ethernet and check the same on Wireshark.
Sir kindly suggest me the numerical values for above mentioned and can I
check the frame using above mentioned method.

• $formula (LaTeX syntax)$