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Instruction Manual
IM-106-880C, OI
September 2009
Hazardous Area OCX 8800
7-6
OCX FUNCTION
BLOCKS
Implemented Function Blocks
Shows the OCX Implemented Function Blocks.
Table 7-1. OCX Implemented
Function Blocks
RESOURCE BLOCK
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
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.
Function Block Description
Resource Block
Transducer Block
Analog Input Block 1 (AI1) See TB Channel Assignment Table 7-16
Analog Input Block 2 (AI2) See TB Channel Assignment Table 7-16
Analog Input Block 3 (AI3) See TB Channel Assigbment Table 7-16
Analog Input Block 4 (AI4) See TB Channel Assignment Table 7-16
PID Block (PID) Proportional/Integral/Derivative of any AI-BLOCK
Arithmetic Block (ARTHM) Arihmetic Function Block
Input Selector Block (ISEL)
Input Selector Function Block
PlantWeb Alert Severity Level Default
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