Lexmark Printer manual Serial Cable Pin Assignments RS-422

8-37

Serial Cable Pin Assignments (RS-422)

The RS-422 serial cable appears as follows:

25 13

25-Pin (Male)

Interfaces

1	14	Printer
		Side

Pin assignments for this 25-pin connector are shown in Table 8-7.You can set the polarity of these signals from the printer operator panel or through MarkVision Professional.

Table 8-7: Dedicated Serial Connector Pin Assignments (RS-422)

Pin	Signal	Direction	Description
1	GND		Logic Ground
15	RXD*	In	Receive Data
17	RXD	In	Receive Data
19	TXD*	Out	Send (transmit) Data
25	TXD	Out	Send (transmit) Data

The following illustration shows how the pins are used:

Printer

Side

Computer Side

25-Pin Connector

Customized Connector (Optional)

* Positive Signal