C.3. RS-232C/RS-422A Protocol

C.3. RS-232C/RS-422A Protocol

A protocol is a set of rules the computer follows in sending data to the printer. The RS-232C/RS-422A param- eters are stored in battery backed-up memory. They are indicated on the status printout. They can be changed by the FRPO (firmware reprogram) command described in the Programming Manual. The param- eters and their identification codes are given below.

H1: Baud rate

Parameter value

Baud rate

 

 

12

1200

 

 

24

2400

 

 

48

4800

 

 

96

9600

 

 

19

19200

 

 

38

38400

 

 

57

57600

 

 

11

115200

 

 

The factory setting is 9600 baud.

H2: Data bits

7 or 8, factory-set to 8.

H3: Stop bits

1 or 2, factory-set to 1.

H4: Parity

Parameter value

Meaning

 

 

0

None

 

 

1

Odd

 

 

2

Even

 

 

3

Ignore

 

 

The factory setting is "None" (0 on the status printout).

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.

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Kyocera 3750, FS1750 manual RS-232C/RS-422A Protocol