Abbreviations
B.1 List of abbreviations
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
275
Abbreviation
Full term in English
Meaning
MooN
"M out of N" voting
Classification and description of the safety-instrumented system
in terms of redundancy and the selection procedures used.
A safety-instrumented system or part that consists of "N"
independent channels. The channels are connected to each
other in such a way that "M" channels are in each case
sufficient for the device to perform the safety instrumented
function.
Example:
Pressure measurement: 1oo2 architecture. A safety-
instrumented system decides that a specified pressure limit has
been exceeded if one out of two pressure sensors reaches this
limit. In a 1oo1 architecture, there is only one pressure sensor.
