Rs422/485 Connector Mapping; System-Bottom (Dip Switches) - Dell Edge 5000 Series Installation And Operation Manual

Pin
1
2
3

RS422/485 connector mapping

Pin
1
2
3
4
5
System—Bottom (DIP switches)
Feature
1 RS422/RS485 port toggle switch
2 RS422/RS485 port resistor switch
3 RS422/RS485 port bias resistor switch
4 ePSA diagnostic switch
5 RS485 port resistor switch
6 RS485 port bias resistor switch
7 RS485 port resistor switch
8 RS485 port bias resistor switch
10
Signal
A(-)
B(+)
GND
Signal
TXA(-) / A(-)
TXB(+) / B(+)
GND
RXA(-)
RXB(+)
Toggle between RS422 or RS485 standard.
Enable/disable the differential termination resistor.
Enable/disable the bias resistor for the RS422/RS485 port.
When the position of the switch changes, the system starts in ePSA
(Enhanced Preboot System Assessment) mode on the next start.
Enable/disable the differential termination resistor for RS485.
Enable/disable the bias resistor for the RS485 port.
Enable/disable the differential termination resistor for RS485.
Enable/disable the bias resistor for the RS485 port.