10.2.3.3 Weihenstephan Base Functionality Client Facet
Table 31 defines a Facet that all OPC servers should support in order to meet the minimum requirements of the Weihenstephan Standards according to the present companion specification.
| Group | Conformance Unit / Profile Title | Mandatory / Optional |
| Weihenstephan | Weihenstephan WSAlarmCode | M |
| Weihenstephan | Weihenstephan WSAlarmMessage | M |
| Weihenstephan | Weihenstephan WSWarningCode | M |
| Weihenstephan | Weihenstephan WSWarningMessage | M |