90033900C
EIA-422 Mode (EtherLite 2 or 162 only)
To operate a port of the EtherLite 162 EIA-422 in EIA-422 mode, set the
port’s EIA-422 ENABLED switch to the up position. Set the TERMINA-
TION (422 ONLY) switch to the down position. This switch connects a
120 ohm, 1/2 watt resistor across the input signals.
EtherLite 2 EIA-422 ports are hard-wired to EIA-422 mode, and have no
termination installed. Pinouts are shown in the table below.
Note: 2-wire multidrop configuration for EIA-422 is not supported.
EIA-422 Pinouts
*EIA-232 signals on EtherLite EIA-422 only
EIA-485 Mode (EtherLite 2 EIA-485 only)
EtherLite 2 EIA-485 ports are wired for half duplex multiple drop EIA-
485 mode and have no termination installed.
EIA-485 Pinouts
*Do not connect any signal.
Copyright
The Digi logo and EtherLite are registered trademarks of Digi International. All other brand and product
names are trademarks of their respective holders.
© Digi International Inc., 2001
All Rights Reserved
Information in this document is subject to change without notice and does not represent a commitment on
the part of Digi International.
Digi provides this document “as is”, without warranty of any kind, either expressed or implied, includ-
ing, but not limited to, the implied warranties of fitness or merchantability for a particular purpose. Digi
may make improvements and/or changes in this manual or in the product(s) and/or the program(s)
described in this manual at any time.
This product could include technical inaccuracies or typographical errors. Changes are periodically made
to the information herein; these changes may be incorporated in new editions of the publication.
EtherLite
Hardware
Installation Guide
Overview
Digi EtherLite serial port servers connect asynchronous serial ports to
10Base-T or 100Base-T Ethernet connections. Most EtherLite servers
support speeds up to 115 Kbps or 230 Kbps on all ports simultaneously.
This table shows all EtherLite models and their capabilities.
EtherLite Models
* Individual ports are configurable as either EIA-232 or EIA-422.
** 115 Kbps is not attainable on all ports simultaneously on the EL-32.
Ethernet Cabling Requirements
The EtherLite unit requires an unshielded twisted-pair (UTP) 10Base-T
or 100Base-TX Ethernet connection. In order to maintain radio frequency
emissions compliance, use EIA/TIA 568-compliant Category 4 or Cate-
gory 5 for 10Base-T and Category 5 only for 100Base-TX.
Installing the EtherLite Software
Install the hardware before you install the device driver software. Follow
the software installation instructions on the Access Resource CD.
Signal
RJ-45
Pin
Direction
RTS*
1
RxD(-)
2
input(-)
DCD*
3
RxD(+)
4
input(+)
TxD(+)
5
)
SG
6
TxD(-)
7
output(-)
CTS*
8
Signal
RJ-45
Pin
Direction
No connect*
1
No connect*
2
No connect*
3
TX(A)/RX(A)
4
Bidirectional
TX(B)/RX(B)
5
Bidirectional
GND
6
No connect*
7
No connect*
8
Model
Serial
Ports
Port
Protocol
Ethernet
Connection
Maximum
Baud Rate
EL 2
2
EIA-232
10Base-T
230 Kbps
EL 2
2
EIA-422
10Base-T
230 Kbps
EL 2
2
EIA-485
10BaseT
230 Kbps
EL 8
8
EIA-232
10Base-T
115 Kbps
EL 16
16
EIA-232
10Base-T
115 Kbps
EL 32
32
EIA-232
10Base-T
115 Kbps**
EL 160
16
EIA-232
10/100Base-T
230 Kbps
EL 162
16
EIA-232 or
EIA-422*
10/100Base-T
115 Kbps
