Use the information below to find the pin assignments for EIA-422 models of EtherLite Terminal Servers.
A terminal, a serial printer, or a serial port for another computer usually functions as a DTE device. The Digi terminal server is also a DTE device. To connect a DTE device to another DTE device a null modem cable or adapter must be used.
Two wires (one twisted pair) are required for each EIA-422 signal, a positive lead ("+"), and a negative lead ("-"). The "+" leads at one end of the cable must be connected to the "+" leads at the other end, and the "-" leads at one end must be connected to the "-" leads at the other end.
Incorrect wiring could result in damage to the connected devices. The following table shows the pin configuration for the EIA-422 versions of Digi EtherLite Terminal Servers.
Signal |
Description |
RJ-45 Pin |
|---|---|---|
RTS* |
Request To Send (EIA-232) |
1 |
RxD- |
Received Data (-) |
2 |
DCD* |
Data Carrier Detect (EIA-232) |
3 |
RxD+ |
Received Data (+) |
4 |
TxD+ |
Transmitted Data (+) |
5 |
SG* |
Signal Ground (EIA-232) |
6 |
TxD- |
Transmitted Data (-) |
7 |
CTS |
Clear To Send (EIA-232) |
8 |
*RTS and DCD are available, but remain single-ended EIA-232 signals, and require Signal Ground (pin 6) as a reference.