Omnitron Systems Technology Serial RS-422 and RS-485 to Fiber Media Converter RS422/485 User Manual

OVERVIEW:
The Omnitron
serial RS-422 or RS-485 to fiber converter that transmits
®
iConverter RS422/485
serial protocol over fiber media. Fiber transmission extends
Serial RS-422 and RS-485 to
serial signals up to 120km and protects against electrical
Fiber Media Converter User Manual
and magnetic interference.
The RS422/485 is available with a single-mode, multimode
Port 1 (P1) or single-fiber transceiver. The serial port interface is
available with a DB-9 female connector or terminal block
connector for field wiring.
The RS422/485 automatically detects the signal baud
rate of the connected point-to-point Full-Duplex RS-422
Port 2 (P2)
serial devices, ranging from 110 to 921,600 baud. The
RS422/485 also automatically adjusts to changes in the
point-to-point Full-Duplex RS-422 baud rate during
operation, without interrupting the data service. Connection
to DTE or DCE Full-Duplex point-to-point RS-422 devices
iConverter RS422/485 DB-9 Models
is configured by an easily accessible DIP-Switch on the
Fiber Type /
front-panel.
Fiber Connector Types
Dual Fiber [DF] or
Distance
Single-Fiber [SF] /
Half-Duplex RS-485 and Full-Duplex RS-485 (sometimes
ST SC MT-RJ LC
Wavelength
referred as Multi-point RS-422) operation is supported via
MM/DF/1310nm 5km 8780-0 8782-0 8784-0 8786-0
a configurable baud rate DIP-Switch to match the master/
SM/DF/1310nm 30km 8781-1 8783-1 8785-1 8787-1 slave communication timing.
SM/DF/1310nm 60km 8781-2 8783-2 - 8787-2
A built-in remote Fiber Loop-Back DIP-Switch provides
SM/DF/1550nm 120km - 8783-3 - 8787-3 easy validation of the fiber segment. The Loop-Back
iConverter RS422/485 Single-Fiber Models does not interrupt signal transmission over the fiber.
SM/SF/
Built-in configurable terminators support Full-Duplex
20km - 8790-1 - -
Tx 1310/Rx 1550
and Half-Duplex operations, allowing the unit to be
SM/SF
20km - 8791-1 - - deployed and terminated at any node in the serial line.
Tx 1550/Rx 1310
SM/SF/
The RS422/485 is designed to work in any
40km - 8790-2 - -
Tx 1310/Rx 1550
chassis. When installed in a multi-module chassis with an
SM/SF
40km - 8791-2 - - iConverter
Tx 1550/Rx 1310
remotely monitored and managed by software control.
For wide temperature (-40 to 60 o C), add a "W" to the end of the model
Management is supported on the
number. Consult factory for extended temperature (-40 to 75 o C) models.
5-Module and 2-Module chassis. The 1-Module chassis
When using single-fiber (SF) media converter models, the Tx supports RS422/485 as a standalone serial to fiber
wavelength on one end has to match the Rx wavelength on the other.
converter.
When ordering module with terminal block serial port, append 'T'
Note that software control for remote configuration
before the dash '-' in the model number. Examples: 8780T-0, 8783T-3
of the RS422/485 requires a multi-module chassis
with an iConverter
Network Management Module (NMM).
Page 1
providing parallel terminations. When these DIP-Switches
"NORM" position (factory default), the RS422/485 operates
are in the "MID" position (factory default), no termination
in a point-to-point Full-Duplex mode, commonly used by
is provided. Setting these DIP-Switches to the "H-T"
the RS-422 protocol. Baud rate selection is automatic in
position provides parallel termination. See the Termination
this mode.
Table and Fig. 6 for details.
When this DIP-Switch is in the RIGHT "MP" position, the
Note that all of the Mid Termination "MID/H-T"
RS422/485 operates in a Multi-point Full-Duplex mode,
DIP-Switches on a RS422/485 need to be set to the
often referred as Full-Duplex RS-485 or Multi-point RS-422.
same position, failure to do so will result in
In this mode, Baud rate must be manually configured
unpredictable behavior.
via Bank 1 "BAUD" DIP-Switches 1 through 4. Please
see the Baud Rate Configuration Table for details.
Board-Mounted Bank 2 DIP-Switches:
Note that Bank 2 DIP-Switches are not accessible via
Switch No. Head
software control, and must be configured physically.
1
2
3
4
5
6
`
Fig. 5 Bank 2 DIP-Switch Description
Master
Bank2 SW1 and SW2: Head Termination "HEAD"
"HEAD"
DIP-Switches:
Fig. 6a Head and Tail Termination Application
Bank 2 Head Termination "HEAD" DIP-Switches 1 and 2
configure the RS422/485's termination setting by
Master
providing termination on the data line. When these
"HEAD"
DIP-Switches are in the LEFT "-" position (factory default),
no termination is provided. Setting these DIP-Switches to
the RIGHT "HEAD" position provides pull-up and pull-
down on the data lines. See the Termination Table on page
8 and Fig. 6 for details.
Note that both of the Head Termination "HEAD"
DIP-Switches on a RS422/485 need to be set to the
same position, failure to do so will result in
unpredictable behavior.
Bank2 SW3 through SW6: Mid Termination
"MID/H-T" DIP-Switches:
Fig. 6b Mid and Head Termination Application
Bank 2 Mid Termination "MID/H-T" DIP-Switches 3 through
6 configure the RS422/485's termination setting by
Page 7
For more information on using and configuring the
RS422/485 via software control, please refer to the
iConverter
RS422/485 is a manageable
NetOutlook ™ Management Software user manual.

PORT STRUCTURE:

Front-Panel Ports:
The front-panel of the
one fiber port (P1) and one RS-422/485 capable serial
port (P2). Depending on the model, the serial port is
available either as a DB-9 female connector or as a
terminal block for field wiring. Please refer to Fig. 1a, Fig.
1b and the Pin-Out Signal Assignment Table for connector
pin-out assignment.
Fig. 1a DB-9 Connector Pin-Out Assignment
Fig. 1b Terminal Block Pin-Out Assignment
Pin-Out Signal Assignment Table
Full-Duplex
PIN
Normal (Point-to-Point) Multi-Point
No.
Signal DTE
iConverter
1 Ground -
Management Module, the RS422/485 can be
2 RTS+ OUT
3 RTS- OUT
iConverter 19-Module,
4 TXD+ OUT
5 TXD- OUT
6 CTS+ IN
7 CTS- IN
8 RXD+ IN
Management Module, such as the
9 RXD- IN
Page 2
MOUNTING AND CABLE ATTACHMENT:
iConverter modules are hot-swappable and can be installed
into any chassis in the
1. After configuring the DIP-Switches, carefully slide the
iConverter module into the installation slot, aligning
the module with the installation guides. Ensure that
the module is firmly seated against the Backplane.
2. Secure the module by fastening the panel thumb screw
(attached to the module) to the chassis front.
Termination Table
3. Attach the serial ports via a DB-9 serial cable (or an open-
Full-Duplex Mode Half-Duplex Mode end serial cable) to a serial RS-422 or RS-485 device.
4. Attach the fiber port via an appropriate multimode or
Tail Mid Head Tail Mid
single-mode fiber cable to a 100BASE-FX Fast Ethernet
OFF OFF OFF ON OFF OFF
device. The iConverter
OFF OFF OFF ON OFF OFF
the receive side on the other device; the receive (Rx)
ON ON OFF ON ON OFF must attach to the transmit side.
5. When using single-fiber (SF) media converter models,
ON ON OFF ON ON OFF
the Tx wavelength on one end has to match the Rx
ON ON OFF ON ON OFF
wavelength on the other. Note that based on this
ON ON OFF ON ON OFF
guideline, the SF media converter models must be
used in pairs, such as the 8790-1 matched with the
RS-485 RS-485
Fiber
8791-1.
i C o n v e r t e r T M T M
b y Om n i t r o n S y s t e m s T e c n o l o g y , I n c . i C o n v e r t e r
b y O mn i t r o n S y s t e ms T e c n o l o g y , I n c .
RS422/485 RS422/485
"TAIL" "HEAD"
Slave
"TAIL"
Slave
RS-485
"TAIL"
`
i C o n v e r t e r T M
b y Om n i t r o n S y s t e ms T e c n o l o g y , I n c .
RS422/485
"MID"
Fiber
RS422/485
i C o n v e r t e r T M
b y Om n i t r o n S y s t e ms T e c n o l o g y , I n c . "HEAD"
RS-485
Slave
"TAIL"
Page 8
DIP-SWITCH SETTINGS:
Front-Panel DIP-Switches
iConverter RS422/485 features
Fig. 2 Front-Panel DIP-Switches
SW1: Normal and Fiber Loop-Back "Norm - FLB"
DIP-Switch:
When the Normal and Fiber Loop-Back "Norm - FLB"
DIP-Switch is in the normal mode "Norm" position (factory
default), the Fiber Loop-Back is disabled. Setting this
DIP-Switch to the "FLB" position on the RS422/485 at
either end of the fiber segment will enable the Fiber Loop-
Back test. When Fiber Loop-Back is enabled, the local
RS422/485 with the DIP-Switch in "FLB" position is the
master, and the remote RS422/485 with the DIP-Switch in
"Norm" position is the slave. The "Tst" LED on the master
will blink rapidly (10 times per second) and the "Tst" LED
on the slave will blink slowly (once per second) if the fiber
segment passes the Loop-Back test. If the fiber segment
fails the Loop-Back test, the "Tst" LED will remain solid on
the master unit.
Note that the Fiber Loop-back test does not interfere
with serial conversion and signal transmission.
Note that if both RS422/485 on the ends of a fiber
segment are set to the "FLB" position during the
Full-Duplex Half-Duplex
Loop-back test, then both RS422/485 would still
Multi-Point display valid master mode results.
DCE - -
SW2: Serial "DCE - DTE" DIP-Switch:
When the "DCE - DTE" DIP-Switch is in the "DCE" position
- Reserved Ground
(factory default), the RS422/485 is configured to connect
IN Reserved Reserved
to Data Communications Equipment such as a modem or
IN Reserved Reserved
printer. Setting this DIP-Switch to the "DTE" position
IN TXD+ (IN) DATA+ configures the RS422/485 to connect to Data Terminal
Equipment such as a computer or controller. Please refer
IN TXD- (IN) DATA
to the PORT STRUCTURE section of this manual for
OUT Reserved Reserved
more details.
OUT Reserved Reserved
Note that the "DCE - DTE" DIP-Switch is disabled if
OUT RXD+ (OUT) Reserved
the RS422/485 is in Half-Duplex mode or in Multi-
OUT RXD- (OUT) Reserved point mode.
Page 3 Page 4
RS422/485 LED INDICATORS:
LED Function
iConverter family.
Color Off State
"Legend"
Power "Pwr" Amber No Power
Fiber Loop- Normal
Green
back Test "Tst" Mode
transmit (Tx) must attach to
Fiber Link and No Fiber
Green
Activities "Act" Link
DTE mode
"DTE" Mode Green
not selected
DCE mode
"DCE" Mode Green
not selected
Serial No serial
Green
Activities "Act" data
TECHNICAL SUPPORT:
For help with this product, contact our Technical Support:
Phone: (949) 250-6510
Fax: (949) 250-6514
Address: Omnitron Systems Technology, Inc.
140 Technology Dr., #500
Irvine, CA 92618 USA
E-mail: support@omnitron-systems.com
URL: www.omnitron-systems.com
Page 9 Page 10
Board-Mounted DIP-Switches:
Fig. 3 Board-Mounted DIP-Switches
OFF ON
BAUD 0
BAUD 1 Baud Rate Selection
=
BAUD 2 (See Table on Page 6)
BAUD 3
FDX / HDX
= Full or Half-Duplex
RSV
Reserved
=
RSV
NORM/MP Point-to-Point or
=
Multi-Point Full-Duplex
Fig. 4 Bank 1 DIP-Switch Description
Bank1 SW1 through SW4: Baud Rate Selection for
RS-485 "BAUD" DIP-Switches:
Bank 1 "BAUD" DIP-Switches 1 through 4 configure the
baud rate when the RS422/485 is operating in Half-Duplex
mode or in Multi-point Full-Duplex mode. These
DIP-Switches are deactivated when the RS422/485 is
operating in point-to-point Full-Duplex RS-422 Mode.
Please see the Baud Rate Configuration Table for details.
Page 5
RS422/485 SPECIFICATIONS:
Model Type RS422/485
On States
Asynchronous Serial RS-422,
Module has power
Protocols
Serial RS-485
Solid: Master mode Tx
pattern sent, but no Rx
Copper
DB-9 Female or
received
Connectors Terminal Block
10 Hz (Blinking 10x per
second): Master mode,
Fiber
ST, SC, MT-RJ, LC
Tx pattern sent, and Rx
Connectors
pattern received
1 Hz (Blinking once per DTE/DCE, Fiber Loop-Back,
Controls
second): Slave mode,
Baud Rate, Termination
Rx pattern received
Power, Test, Fiber Lnk/Act,
Solid: Fiber Link
LED Displays
DTE, DCE, Serial Act
Active
Blinking: Fiber Data
Dimensions W:0.85" x D:4.5" x H:2.8"
Transmission
Weight
8 oz.
DTE mode selected
Compliance UL, CE, FCC Class A
DCE mode selected
Power
0.5A @ 3.3VDC (typical)
Serial data received Requirement
Standard: 0 to 50º C
Temperature Wide: -40 to 60º C
Storage: -40 to 80º C
Humidity
5 to 95% (non-condensing)
Altitude -100m to 4000m
MTBF (hrs) 850,000
Warning
The operating description in this Instruction Manual is for
use by qualified personnel only. To avoid electrical shock,
do not perform any servicing of this unit other than that
contained in the operating instructions, unless you are
qualified and certified to do so by Omnitron Systems
Technology, Inc.
Page 11
Baud Rate DIP-Switch Configuration Table
Baud Rate SW1 SW2 SW3 SW4
110
L L L L
300 R L L L
1200 L R L L
2400 R R L L
4800 L L R L
9600 R L R L
19.2K L R R L
38.4K R R R L
57.6K L L L R
115K R L L R
230K L R L R
460K R R L R
921K L L R R
921K R L R R
921K
L R R R
921K R R R R
L designates the LEFT (OFF) position of the DIP-switch
R designates the RIGHT (ON) position of the DIP-switch
Bank1 SW5: Full/Half-Duplex "FDX/HDX" DIP-Switch:
When the Full/Half-Duplex selection DIP-Switch is in the
LEFT "FDX" position (factory default), the RS422/485
operates in serial Full-Duplex mode. Configuring the
DIP-Switch to the RIGHT "HDX" position enables serial
Half-Duplex mode, often used by the RS-485 protocol.
When the RS422/485 is in Half-Duplex mode, the point-
to-point/Multi-point DIP-Switch has no effect. Configure
the Half-Duplex Baud rate with Bank 1 DIP-Switches 1
through 4.
Bank1 SW6 and SW7: "RSV" DIP-Switches:
DIP-Switches 6 and 7 in Bank 1 are reserved for factory
use and must be kept in the LEFT position.
Bank1 SW8: Full-Duplex Normal/Multi-Point
"NORM/MP" DIP-Switches:
This DIP-Switch has no affect if the RS422/485 is in
Half-Duplex mode. When this DIP-Switch is in the LEFT
Page 6
Warranty
This product is warranted to the original purchaser against
defects in material and workmanship for a period of
TWO YEARS from the date of shipment. A LIFETIME
warranty may be obtained by the original purchaser by
REGISTERING this product with Omnitron within 90 days
from the date of shipment. TO REGISTER, COMPLETE
AND MAIL OR FAX THE ENCLOSED REGISTRATION
FORM TO THE INDICATED ADDRESS. Or you may
register your product on the Internet at www.omnitron-
systems.com. During the warranty period, Omnitron will,
at its option, repair or replace a product which is proven
to be defective.
For warranty service, the product must be sent to an
Omnitron designated facility, at Buyer 's expense.
Omnitron will pay the shipping charge to return the product
to Buyer's designated US address using Omnitron's
standard shipping method.
Limitation of Warranty
The foregoing warranty shall not apply to defects resulting
from improper or inadequate use and/or maintenance of
the equipment by Buyer, Buyer-supplied equipment,
Buyer-supplied interfacing, unauthorized modifications
or tampering with equipment (including removal of
equipment cover by personnel not specifically authorized
and certified by Omnitron), or misuse, or operating outside
the environmental specification of the product (including
but not limited to voltage, ambient temperature, radiation,
unusual dust, etc.), or improper site preparation or
maintenance.
No other warranty is expressed or implied. Omnitron
specifically disclaims the implied warranties of
merchantability and fitness for any particular purpose.
Exclusive Remedies
The remedies provided herein are the Buyer's sole and
exclusive remedies. Omnitron shall not be liable for any
direct, indirect, special, incidental, or consequential
damages, whether based on contract, tort, or any legal
theory.
Form: 040-08780-001F 12/08
Page 12