GE Multilin W650 - B.6.7 Retrieving Oscilography

GEK-113032A W650 Wind Generator Protection System B-27
APPENDIX B B.6 EVENTS STATUS REQUEST (ALARMS)
B
B.6.7 RETRIEVING OSCILOGRAPHY
In case of not using the quickest download method by FTP , ModBus can be used for downloading oscillography, in the
same way that events (snap-shots). First of all, open file with writing message in 0xfe40, where desired file to open is
indicated, it could be:
OSC01.DAT (COMTRADE data file in binary)
OSC02.CFG (COMTRADE configuration file)
OSC01.HDR (COMTRADE header file)
OSC02.DAT
OSC02.HDR
...
For reading the oscillography in several strings, several reading requests must be sent to 0xff40 address . For reading the
previous message a reading petition must be sent to 0xff42 address. The maximum number of bytes to be read in each part
is 244.