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Instruction Manual
IM-106-880C, OI
September 2009
Hazardous Area OCX 8800
7-10
PWA Simulate Setting PWA_SIMULATE to ON allow simulating the PWA parameters,
FAILED_ACTIVE, MAINT_ACTIVE and ADVISE_ACTIVE. “Allowing
Simulating” means that these parameters get write permission and the host’s
written value is the only one which is used for parameter’s read back value.
The data which comes from the Hazardous Area OCX 8800 is not used in this
case.
Fieldbus/PWA Simulate Fieldbus simulation and PWA simulation can be enabled and disabled using
the DD method. Use the "Transmitter Options" method to enable/disable the
Fieldbus or PlantWeb Alerts simulation.
Selecting “Fieldbus simulation” enables both the Fieldbus function block
simulation and PWA simulation. Selecting “PWA simulation” enables
PlantWeb Alert simulation only.
The simulation feature should not be used for normal operations. This feature
is to be used by authorized personnel for testing or demonstration purposes
only.
Configure Simulation from AMS
Use the following procedure to configure PWA simulation using AMS.
Line Input Out of
Range
Transducer
Block:
1) Line
Frequency
Error
2) Line Voltage
Low
3) Line Voltage
High
Device
Alerts
This alert
indicates that the
line input power
to the device is
outside the
proper operating
limits.
Check line input
power for proper
voltage and
frequency.
The device power supply continuously monitors
the line input. Measured variations in the line
input power are used to compensate the sensor
heater control and check for faulty line conditions.
Refer to Section 8: Troubleshooting for details.
Inter Board
Communication
Failure
Transducer
Block:
Inter Board
Communication
Failure
FF/
Device
Alerts
This alert
indicates a
communication
failure between
the FF board and
the device.
Verify device is
powered. Check the
installation of the
Fieldbus Output
Board on its carrier
board. If the above
are OK, replace the
carrier board and/or
Fieldbus Output
Board.
There is no communication possible between the
Fieldbus Output Board and the device’s computer
board.
Simulate Active FF/
Device
Alerts
This alert occurs
when the PWA
simulate mode is
active.
The PWA active parameters can now be written.
The resource block detailed status parameters
and the internal alerts in the Transducer Block
where the PWA active alarms originate can also
be written.
Alerts Alarms
AMS
Tab
What does the
alert indicate?
Recommended
Action
Description
Do not use the PWA Simulate feature for normal operations. When used improperly the
Simulate feature can alter, disable, or activate device alarms.