Troubleshooting
Signal Ground
Common ground
DSR
Output, always asserted. Not connected on port one and port two.
RTS
Output. Input flow control signal. When the internal buffer reaches the “Flow Off” buffer level, this signal
is lowered. When the buffer level decreases to the “Flow ON” buffer level, this signal is raised.
CTS
Input. When Flow Control is set for CTS/RTS, lowering this signal will halt data flow from the unit's RS-
232 port.
RS-422 PIN Assignments RJ-45 Connector
This pinout is used
only on Port 1
of the EtherPath-X4 model when configured for RS-422 Internal
jumpers must be set for the RS-422 configuration.
The RJ-45 RS-422 port wiring contains the signals of a standard DCE port on a space-saving RJ-45
connector. This is sometimes known as 4-wire RS-485. The chart below details signal directions and
names.
45
