Nikon DTM-502 Series Instruction Manual page 151

As each point is received by the instrument, the
"Record" number is incremented.
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• If the [ESC] key is pressed during upload data, it aborts the process and returns to
the Comm-menu screen. Records already processed before [ESC] are stored in
the job.
• The system will truncate the code if it is longer than 16 characters.
Handling of Duplicate PT's
• When the existing point is UP/CC/MP and it is *not* referred to by any ST/BS, then
the point will be automatically overwritten by the new uploaded point. (No error is
reported.)
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