Digi EL 2 Installation Manual

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
RJ-45
Signal Direction
Pin
RTS* 1
RxD(-) 2 input(-)
DCD* 3
RxD(+) 4 input(+)
TxD(+) 5 output(+)
SG 6
TxD(-) 7 output(-)
CTS* 8
*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
RJ-45
Signal Direction
Pin
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
*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.
90033900C

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
Serial Port Ethernet
Model
Ports Protocol Connection
EL 2 2 EIA-232 10Base-T
EL 2 2 EIA-422 10Base-T
EL 2 2 EIA-485 10BaseT
EL 8 8 EIA-232 10Base-T
EL 16 16 EIA-232 10Base-T
EL 32 32 EIA-232 10Base-T
EL 160 16 EIA-232 10/100Base-T
EIA-232 or
EL 162 16 10/100Base-T
EIA-422*
* 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.
EtherLite
Hardware
Maximum
Baud Rate
230 Kbps
230 Kbps
230 Kbps
115 Kbps
115 Kbps
115 Kbps**
230 Kbps
115 Kbps