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TROUBLESHOOTING
Troubleshooting the PLMIII system is done through
the PC software you can:
•
View active alarms.
•
View the sensor inputs using the Real-Time Data
Display.
•
Test the payload lights.
•
Create log files of sensor inputs for further analy-
sis.
•
These activities require a connection to the
PLMIII system.
Viewing Active Alarms
Active alarms are alarms that have been set, but not
yet cleared. Each alarm is set when the conditions
for activation are held for 5 seconds. Each alarm is
cleared when the condition has been returned to nor-
mal range for 5 seconds. For example, 5 seconds
after the left-rear pressure sensor is disconnected,
the LR-Pressure Lo alarm will be activated. This can
be viewed using to the "Connect to Payload Meter"
screen. 5 seconds after the pressure sensor is re-
connected, the alarm will clear and be recorded in
memory.
Active alarms are recorded in memory as "cleared"
when the key switch is turned off. When power is
restored to the payload meter, the alarms will be re-
activated if the conditions still exist for 5 seconds.
To view active alarms:
1. Connect to the payload meter and start the PC
software.
2. From the main menu, select "Connect to Pay-
load Meter". The PC will request the latest sta-
tus information from the payload meter.
3. If there are active alarms, the "Display Active
Alarms" button in the lower left corner will be
available. If the button is not available, there are
no active alarms at the time of connection. The
screen does not automatically refresh. If a con-
dition changes to cause an alarm, the user must
exit and re-enter the "Connect to Payload
Meter" screen.
M20008 02/05
TROUBLESHOOTING SECTION
Payload Meter III
Real-Time Data Display
The PC software can be used to view the 'live' input
readings from the payload meter. The numbers dis-
played are 1-second averages.
1. Connect to the payload meter and start the PC
software.
2. From the main menu, select "Connect to Pay-
load Meter". The PC will request the latest sta-
tus information from the payload meter.
3. Select the "Real Time Data" button. The data
screen will pop up. The PC will request the pay-
load meter to begin transmitting data.
4. To exit, press the "Close" button.
The units for each measurement are determined by
the setting in the Program Options for the PC soft-
ware. The four suspension pressures and inclinome-
ter are shown. The status of the Body-Up and Brake-
Lock inputs is also shown. The haul cycle state and
speed is displayed. The current sprung weight is dis-
played. This differs from pure payload. The sprung
weight is a measurement of the weight of the truck
above the suspension. It does not include the tires,
spindles, wheel motors, drive case, or anything
below the suspensions.
Testing the Payload Lights
The real time data display also allows the user to
individually power the payload lights. This can be
useful for testing the lights. To turn on a particular
color payload light:
1. Click the check box beside the color light to
power.
2. Press the "Set Lights" button to turn on the light.
3. Uncheck the box and press "Set Lights" to turn
off the light.
The lights will return to their normal state when the
real time data display is closed.
M20-33
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