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H5: Protocol logic
Parameter value | Meaning |
0 | Combination of 1 and 3 below |
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1 | DTR/DSR, positive logic |
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2 | DTR/DSR, negative logic |
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3 | XON/XOFF |
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4 | ETX/ACK |
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5 | XON/XOFF recognized only as protocol |
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The factory setting is 0.
H6: Buffer nearly-full threshold
This is a percentage from 0 to 99. The factory setting is 90.
H7: Buffer nearly-empty threshold
This is a percentage from 0 to 99. The factory setting is 70.
The factory settings of the buffer
The gap between the
H8: Received-data buffer size
This is the size of the input buffer, specified in units of 10 Kbytes. The
Since DTR/DSR protocol is not used with the
B.4.1 PRESCRIBE FRPO D0 Command
The PRESCRIBE FRPO D0 command provides control over XON/XOFF operation when an error occurs on the serial interface. The following table summarizes the error status corresponding to different D0 values.
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| Error not handled | Error handled | |
Timing of XON transfer to | XON sent every | D0=0 (default) | D0=1 | |
host while Ready or Waiting |
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XON not sent | D0=10 | D0=11 | ||
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