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No Communications With PC
In a case where the laptop PC will not properly connect to the PLMIII system:
• Confirm power to the payload meter.
• Confirm laptop serial port setting using the PC software. From the mail menu select "Change Program
Options". Confirm that the selected serial port is correct and that it is available.
• Confirm that a Personal Digital Assistants (PDA) synchronization software is not using the serial port. Often,
PDA software like Palm Pilot's HotSync software will take control of the serial port and not let other applications
use the serial connection. Close the synchronization software and retry the Payload Data Manager software.
• Confirm Operator Switch use. If this switch works properly, it confirms that the communications wiring between
the payload meter and the junction box is functional.
• Before the beginning of troubleshooting, turn key switch OFF. Wait 1 minute and turn key switch ON.
M20-38
Payload Meter III
02/05 M20008
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