Kyocera FS-1700 C.2. RS-232C/RS-422AInterface, Verifying the Setting, Interface Signals

C.2. RS-232C/RS-422A Interface

Verifying the Setting

The procedure described below should be followed to verify that the RS-422A mode had been cor- rectly set. Print the service status page to verify that the RS-422A mode has been correctly set.

1.Make sure the power switch is off. Plug the power cord into the printer and turn power on.

2. If the printer is on-line, select 
   in the Mode Select menu (refer to Mode Select Menu at the end of this document), and print the service status page.

3.Verify whether the setting is correct by checking the status printed at the bottom of the page. The following sample indicates that "RS-422A" is set "RS4". If "RS-232C" is set, "RS2" appears.

[Printer Status Page]

Indicates the current serial interface mode.

Interface Signals

The pins in the printer's RS-422A interface connector carry the signals listed in Table C.3.

Table C.3. RS-422A Signal Pin Assignments

Pin	In/out	Signal	Description
1	–	FG	Frame ground
3	In	RDA	Receive data Inverted
7	–	SG	Signal ground
9	Out	SDA	Send data Inverted
10	Out	SDB	Send data
18	In	RDB	Receive data

Overview of Signals (RS-422A)

FG - Frame Ground - (Pin 1)

This pin is connected directly to the printer frame.

SG - Signal Ground - (Pin 7)

All signals can transmit between the printer and the host computer to send each signals with a signal ground.

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