B&B Electronics 3PCIOSD1x-3903m manual Appendix C Jumper Mode Table, Jumpers RS-232 RS-422 RS-485

Appendix C: Jumper Mode Table

Jumpers	RS-232	RS-422	RS-485	RS-485
Port 1 (A)		4-Wire	4-Wire	2-Wire
JP1	RTS(232)	not used	SD/RTS *	SD/RTS *
Control
JP2 A	232	422/485	422/485	422/485
JP2 B	232	422/485	422/485	422/485
JP2 C	232	422/485	422/485	422/485
JP3 D	232	422/485	422/485	422/485
JP4 TX	not used	422	485	485
JP4 RX	not used	422	422	485
JP4	not used	IN/OUT	IN/OUT	IN/OUT
Termination
JP3	*4/*1	*4/*1	*4/*1	*4/*1
Clock

How to Use the Table: The left vertical column shows the jumpers for the port. The four right vertical columns show the position setting of the jumper at the left for RS-232, RS-422 or 4-wire RS-485 or 2- wire RS-485 modes.

NOTES:

RS-485 Mode: The JP1 Control jumper should be set to Send Data mode unless your software requires RTS control.

Refer to the Setup section for explanations of the SD/RTS,

Termination and Clock settings.

Note that termination should only be used in systems with both high baud rates (>19200) and over several thousand feet of cable.

Information on RS-422 and RS-485 communications can be found in the B&B Electronics RS-422/485 Application Note (available free on our websites).

Documentation Number 3PCIOSD1x-3903m Manual Appendix C C-1 C-2 Appendix C Documentation Number 3PCIOSD13903m Manual

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104	B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445	B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445