Kyocera FS 1020D FS-1020D Operation Guide Rev 1.4 - Page 84

B.4.1 PRESCRIBE FRPO D0 Command, H5: Protocol logic, H6: Buffer nearly-full threshold

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RS-232C Protocol H5: Protocol logic Parameter value 0 1 2 3 4 5 Meaning Combination of 1 and 3 below DTR/DSR, positive logic DTR/DSR, negative logic XON/XOFF ETX/ACK XON/XOFF recognized only as protocol 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 nearly-full and nearly-empty thresholds (H6 and H7) are subject to change without notification. The gap between the nearly-full and nearly-empty thresholds allows the computer to send a fairly large amount of data in a continuous stream. H8: Received-data buffer size This is the size of the input buffer, specified in units of 10 Kbytes. The factory-set value is 6, meaning 60 Kbytes. 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. Timing of XON transfer to host while Ready or Waiting XON sent every 3-5 seconds XON not sent Serial interface error Error not handled Error handled D0=0 (default) D0=1 D0=10 D0=11 Table B-4 B-10

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RS-232C Protocol
B-10
H5: Protocol logic
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 nearly-full and nearly-empty thresholds
(H6 and H7) are subject to change without notification.
The gap between the nearly-full and nearly-empty thresholds allows the
computer to send a fairly large amount of data in a continuous stream.
H8: Received-data buffer size
This is the size of the input buffer, specified in units of 10 Kbytes. The
factory-set value is 6, meaning 60 Kbytes.
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.
Parameter value
Meaning
0
Combination of 1 and 3 below
1
DTR/DSR, positive logic
2
DTR/DSR, negative logic
3
XON/XOFF
4
ETX/ACK
5
XON/XOFF recognized only as protocol
Serial interface error
Error not
handled
Error handled
Timing of XON
transfer to host
while Ready or
Waiting
XON sent every
3-5 seconds
D0=0 (default)
D0=1
XON not sent
D0=10
D0=11
Table B-4