Honeywell 301C User Manual page 58

The second Network screen offers the Statistics and Calibration
options.
Selecting Statistics from the Network menu displays a screen
containing the statistics for the selected device address.
Valid: Indicates the number of valid responses for the last 16
requests
Errors: Indicates the number of errors in the response for the last 16
requests
Timeouts: Indicates the number of timeouts (no response) for the last
16 requests
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