11.2.2.4 PAEFS FilterUnit is Machine Server Facet
Table 112 defines a Facet that describes a filter system that consists of filter units, each of which is considered a machine by itself.
| Group | Conformance Unit / Profile Title | Mandatory / Optional |
| PAEFS | PAEFS FilterUnit Machine Identification | M |
| PAEFS | PAEFS FilterUnit Statemachine | M |