The SmpRate has an attribute type of INT16U which means that the SmpCnt values can fall into the range [0; 65535].
However, for Traveling Waves and some Voltage Source Converter applications, it is necessary to sample with frequencies of 1 MHz or higher which means that the SmpCnt values should take values beyond 999999.
Ascendant compatibility issue to be discussed.
Proposal
Change the attribute type from UINT16 to UINT32.
Discussion
Created
Status
I am uncertain that 61869-9 is suitable for TW.
61869-9 requires 16-bit sampling while typically TW needs far fewer bits. This would be a large waste of bandwidth.
Also, packet loss, while tolerable in 61869-9 is not tolerable for TW because signals span only a few samples at 1 MHz
Also, specialized CT/VT's are required for TW which are typically not used in 61869-9.