7.7 Resource Block
7.7.1 PlantWeb Alerts
The PlantWeb Alerts (PWA) software supports three groups of alarms for three severity levels: 1)
Failed, 2) Maintenance, and 3) Advisory. Each PWA can be configured for one or more of the
three alarm groups. The PWA alarms and their severity level default settings are listed in
Table 7-2.
Table 7-2 Hazardous Area OCX 8800 PWA
Reserved: none
Sensor Malfunction Failed
Sensor Degraded Failed
Thermocouple Malfunction Failed
Sensor Heater Malfunction Failed
Sensor Heater Over Temperature Failed
Sensor Heater Temperature Variance Maintenance
Calibration Error Maintenance
Calibration Recommended Advisory
NV Memory Failure Failed
NV Writes Deferred Advisory
High Electronics Temperature Maintenance
ADC Failure Failed
Line Input Out of Range Advisory
Inter Board Comm Failure Failed
Simulate Active Advisory
Each alarm condition can be “Enabled”, “Disabled”, or have alarm reporting “Suppressed”. The
PWA alarms must be “Enabled” to allow the corresponding alarm condition to be detected. The
PWA alarms can be “Suppressed” to mask out failures from annunciation.