User`s guide

Signamax 065 -1163 F series RS-232/422/485 to 100BaseFX Media Converter
Appendix B
27
B
APPENDIX B
RS-422/485 4-Wire Definition
Converter
DB9 Female
RS-422/485
Device
PIN 1
PIN 2 ? A (RX+)
PIN 3 ? B (TX+)
PIN 4
PIN 5
PIN 6
PIN 7 ? C (RX-)
PIN 8 ? D (TX-)
PIN 9
RS-485 2-Wire Definition
Converter
DB9 Female
RS-422/485
Device
PIN 1
PIN 2 ? 1 (B+)
PIN 3
PIN 4
PIN 5
PIN 6
PIN 7 ? 2 (A-)
PIN 8
PIN 9