Kyocera FS 1700 FS-1700/3700 Users Manual - Page 111

PRESCRIBE II FRPO D0 command, C-11

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C.3. RS-232C/RS-422A 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 10K bytes. The factory-set value is 6 meaning 60K bytes.  Since DTR/DSR protocol is not used with the RS-422A standard, select a pa- rameter value other than 0, 1, or 2 for the H5 setting when using the RS-422A interface. PRESCRIBE II FRPO D0 command The PRESCRIBE II FRPO D0 command is provided to allow manipulating XON/XOFF when an error has occured 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 C-11

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H5: Protocol logic
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
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 sub-
ject 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 10K bytes. The factory-set value is 6
meaning 60K bytes.
Since DTR/DSR protocol is not used with the RS-422A standard, select a pa-
rameter value other than 0, 1, or 2 for the H5 setting when using the RS-422A
interface.
PRESCRIBE II FRPO D0 command
The PRESCRIBE II FRPO D0 command is provided to allow manipulating XON/XOFF when an er-
ror has occured on the serial interface. The following table summarizes the error status corre-
sponding to different D0 values.
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
C.3.
RS-232C/RS-422A Protocol
C-11