Black Box 1-, 2-, and 4-Port Industrial Ethernet Serial Servers Appendix C RS-485 Connections

Appendix C: RS-485 Connections

C.3 1-Port Serial Server Terminal Block Pin-out in RS-485F (Four-Wire, Full-Duplex) Mode

Figure C-3. Terminal block connector.

Table C-3. Terminal block connector pinning in RS-485F

mode.

Signal Name	RS-422	Direction	Terminal
Signal Ground	GND	—	1
Transmit Data (-)	TXD(-)	Out	2
Transmit Data (+)	TXD(+)	Out	3
Receive Data (+)	RXD(+)	In	4
Receive Data (-)	RXD(-)	In	5

724-746-5500 blackbox.com Page 59