ATEN RS-232 Manuel utilisateur
FCC Information
This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy, and if not
installed and used in accordance with the instruction manual, may
cause interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or
more of the following measures:
Reorient or relocate the receiving antenna;
Increase the separation between the equipment and receiver;
Connect the equipment into an outlet on a circuit different from
that which the receiver is connected;
Consult the dealer or an experienced radio/television technician
for help.
RoHS
This product is RoHS compliant.
SJ/T 11364-2006
The following contains information that relates to China.
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ic485ai User Manual
Online Registration
Telephone Support
Technical Support
For international online technical support – including
troubleshooting, documentation, and software updates:
http://support.aten.com
For North American technical support:
International http://support.aten.com
North America http://www.aten-usa.com/product_registration
International 886-2-8692-6959
China 86-10-5255-0110
Japan 81-3-5323-7178
Korea 82-2-467-6789
North America ATEN TECH 1-888-999-ATEN
ATEN NJ 1-732-356-1703
United Kingdom 44-8448-158923
Online Technical Support ATEN TECH http://www.aten-usa.com/support
ATEN NJ http://support.aten.com
Troubleshooting
Documentation
Software Updates
ATEN TECH http://www.aten-usa.com
ATEN NJ http://www.aten.com
Telephone ATEN TECH 1-888-999-ATEN
ATEN NJ 1-732-356-1703
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Package Contents
The RS232 / RS485 Interface Converter package contains the
following items:
1 IC485AI Bidirectional Isolated Converter
1 Power Adapter
1 User Manual
Check to make sure that all the components are present and that
nothing got damaged in shipping. If you encounter a problem,
contact your dealer.
Read this manual thoroughly and follow the installation and
operation procedures carefully to prevent any damage to the unit,
and/or any of the devices connected to it.
*Features may have been added to the ic485ai since this
manual was printed. Please visit our website to download the
most up-to-date version of the manual.
Copyright © 2001 ATEN® International Co., Ltd.
Manual Part No. PAPE-0194-100
Manual Date: 2010-03-26
ATEN and the ATEN logo are trademarks of ATEN International Co., Ltd. All rights
reserved. All other trademarks are the property of their respective owners.
- 5 -
Overview
Although RS-232 serial ports are found on almost every
computer, because of their slow transmission speeds, limited
range, and limited networking capabilities, they are not an
effective solution for industrial strength long distance
communications systems.
Systems based on the RS-422 and RS-485 standards, on the
other hand, are not subject to the RS-232 limitations because
they utilize different voltage lines for the data and control signals.
The IC-485AI Isolated Converter is a bidirectional converter that
transparently converts RS-232 signals to RS-422 / RS-485
signals (and vice versa), thus permitting the creation of reliable
long distance data communications systems using standard
computer hardware.
The IC-485AI provides Point-to-Point; Multidrop; and Simplex
operations over distances of up to 1200 m (4000 ft.). Designed
with built in optocouplers for exceptional signal isolation, plus
transformers for excellent power isolation, this extremely reliable
isolated converter enhances the quality of data communications
at the same time that it protects your equipment from electrical
surges of up to 2000 volts.
Features
Automatic internal RS-485 bus supervision
No external flow control signals for RS-485 required
Transient suppression on RS-485 data lines
LEDs for easy status monitoring
Minimum 2000V isolation protection
Up to 115.2 Kbps data throughput
DCE / DTE selectable
Point-to-Point; Multidrop; and Simplex operating modes
Four wire full duplex; two wire half duplex
- 6 -
Cable distance of up to 1200 m (4000 ft.)
Compact size
Components
Top view:
1. Status LEDs
RTS: Lights to indicate that RTS has been pulled high.
TxD: Flashes when data transmission occurs.
2. RS-422 / RS-485 Terminal Block
3. Grounding Tab
4. DCE /DTE Selection Switch
If the IC-485AI is going to be plugged into a DTE device, the
switch must be set to DCE, and vice versa.
5. Power Jack
The cable from the Power Adapter plugs in here.
6. RS-232 DB-25 Female Connector
2
3
45
6
1
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Bottom View:
1. DIP Switch
This eight segment DIP Switch, located on the unit’s bottom
panel, is used to configure the switch’s operating parameters.
1
- 8 -
DIP Switch Configuration
The IC-485AI’s settings for Baud Rate, Data Format, and RS-422
/ RS-485 Mode are configured by setting the eight segment DIP
Switch located on its bottom panel
Note: When you change any of the DIP Switch settings, you
must reset the device by powering it off, then powering
it on again.
SW 1-3: Baud Rate
Note: 1. The Baud Rate must be the same for all units on the
installation.
2. The default is 9600 bps.
SW 4: Reserved
Baud Rate SW1 SW2 SW3
1200 ON ON ON
2400 OFF ON ON
4800 ON OFF ON
9600 OFF OFF ON
19200 ON ON OFF
38400 OFF ON OFF
57600 ON OFF OFF
115200 OFF OFF OFF
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SW 5-6: Data Format
These two switch segments configure the bit settings for Start,
Data, Parity, and Stop.
Note: The default is 10 bits (1 Start; 8 Data; 0 Parity; 1 Stop).
Unless you have a special reason to change this, we
recommend that you leave it as is. If you do change it,
however, all the units on the installation must be
changed to match.
SW 7-8: RS-422 / RS-485 Operating Mode
SW7 determines whether the unit operates as an RS-422 or
RS-485 converter.
As an RS-422 converter, SW8 determines whether the unit
is configured for Master or Slave operation.
As an RS-485 converter, SW8 determines whether the unit
operates in RTS Control Mode or Auto Send Data Mode.
Operating modes are discussed in detail in the next section
and on p.15
Note: RS-422 is used for 4 wire hookups; RS-485 is used for
2 wire hookups.
Data Format (bits) SW5 SW6
9ONON
10 OFF ON
11 ON OFF
12 OFF OFF
Operating Mode SW7 SW8
RS-422 Master ON ON
RS-422 Slave OFF ON
RS-485 Auto Send Data Mode ON OFF
RS-485 RTS Control Mode OFF OFF
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Operating Modes
The IC-485AI supports three operating modes: Point-to-Point;
Multidrop; and Simplex. Point-to-Point and Multidrop can be
configured for Full or Half Duplex. Each of the operating modes
is explained below.
Point-to-Point
A Point-to-Point configuration is one in which two devices,
located at two different places are linked for communication by a
pair of IC-485AI units. There are two configurations: Point-to-
Point Full Duplex, and Point-to-Point Half Duplex.
1. Point-to-Point 4 Wire Full Duplex
Point-to-Point Full Duplex uses reverse four wire cabling,
as shown in the diagram below.
For both IC-485AI units, set the unit to DCE or DTE
depending on what type of device the IC-485AI will plug
into (if it will plug into a DCE device, configure it for DTE,
and vice versa)
Set SW7 and SW8 ON for both units. They are now
configured for RS-422 Master operation.
T+
T-
R-
R+
R+
R-
T-
T+
Connect
to PC#1’s
COM port
Connect
to PC#2’s
COM port
DB-25 DB-25
Autres manuels pour RS-232
1
Ce manuel convient aux modèles suivants
3
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