B&B Electronics 485DSS manual Appendix C Cable Charts, RS-232 DTE Port

Appendix C: Cable Charts

These charts indicate some common cable wiring based on the 485DSS RS-232 and RS-485/422 ports. Refer to the Port Configuration section of this manual for more information.

Chart 1. IBM PC DB25 Connector to

485DSS RS-232 (DTE) Port

IBM PC			485DSS
Serial Port		Signal	RS-232 (DTE) Port
DB25 Connector	Direction		DB25 Connector
2	-----------	>	3
3	<-----------		2
4	-----------	>	5
5	<-----------		4
7	<---------	>	7

Chart 2. IBM PC DB9 Connector to

485DSS RS-232 (DTE) Port

IBM PC			485DSS
Serial Port		Signal	RS-232 (DTE) Port
DB9 Connector	Direction		DB25 Connector
3	-----------	>	3
2	<-----------		2
7	-----------	>	5
8	<-----------		4
5	<---------	>	7

Chart 3. RS-232 DCE Device w/DB25 Connector to

485DSS RS-232 (DTE) Port

	RS-232 DCE			485DSS
	Serial Port		Signal	RS-232 (DTE) Port
	DB25 Connector	Direction		DB25 Connector
	2	<	-----------	2
	3	-----------	>	3
	4	<----------		4
	5	-----------	>	5
	7	<----------	>	7
485DSS3298 Manual			Appendix C		C-1

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