One of the crucial aspects of the standard series IEC 61850 is about object modeling ... first versions have been published in the year 2004 ... guess you agree!
Did you know that object modeling for process automation was already defined to some degree in the late 1980s for the standard ISO/IEC 9506-6 (MMS Companion Standard for Process Control) - published in the year 1994? Maybe you are surprised ... you may even have been born after that time ...
The other day I have documented the following example of supervision of rate change of a process measurement:
On the bottom the MMS Named Variable C_PVRCPAP is shown. The semantic (setting for a specific event) is equivalent to the "Temperature rate alarm trigger level setting" of the LN class STMP in IEC 61850-7-4 Ed2.1. The definition in MMS part 6 is generic and applies to any measurement.
I would say that the MMS companion standard ISO/IEC 9506-6 was some 30 years too early published ... mainly due to the fact that many engineers did not understand abstract object modeling.
History repeats itself, which is good because most people don't pay attention the first time anyway.
And today? Hope you have a better understanding! In case you need help ... let me know.
The semantic of the huge amount of signals in IEC 61850 or the few in the old ISO/IEC 9506-6 make the difference compared to most protocols like IEC 60870-5-104 and ...
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