IS5 COMMUNICATIONS iSC2 Series User manual

Single Port Serial to Fiber Media Converter
iSC2 Series User’s Manual
Version 1.4
Nov. 2016
iS5 Communications Inc.
#1-1815 Meyerside drive, Mississauga, Ontario
Tel: [phone]
Fax: [phone]
Website: www.iS5Com.com
E-mail: [e-mail]

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All Rights Reserved
Dissemination or reproduction of this document, or evaluation and communication of its contents, is not
authorized except where expressly permitted. Violations are liable for damages. All rights are reserved, particularly
for the purposes of patent application or trademark registration.
This document contains proprietary information, which is protected by copyright. All rights are reserved. No part
of this document may be photocopied, reproduced or translated to another language without the prior written
consent of iS5 Communications Inc.
Disclaimer Of Liability
We have checked the contents of this manual against the hardware and software described. However, deviations
from the description cannot be completely ruled out.
iS5 Communications shall not be liable for any errors or omissions contained herein or for consequential
damages in connection with the furnishing, performance, or use of this material.
The information given in this document is reviewed regularly and any necessary corrections will be included in
subsequent editions. We appreciate any suggested improvements. We reserve the right to make technical
improvements without notice.
Registered Trademarks
iS5Com™, is a trademark of iS5 Communications Inc. Other designations in this manual might be trademarks
whose use by third parties for their own purposes would infringe the rights of the owner.
Linux® is the registered trademark of Linus Torvalds in the U.S. and other countries.
The registered trademark Linux® is used pursuant to a sublicense from LMI, the exclusive licensee of Linus
Torvalds, owner of the mark on a world-wide basis.
Third Party Copyrights
If any. All Rights Reserved.
Warranty
Five (5) years from date of purchase, return to factory. For warranty details, visit www.iS5Com.com or contact your
customer service representative.

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Table of Contents
All Rights Reserved ............................................................................................................................. 2
Disclaimer Of Liability........................................................................................................................2
Registered Trademarks.......................................................................................................................2
Third Party Copyrights .......................................................................................................................2
Warranty ...............................................................................................................................................2
Introduction ..................................................................................................................................................4
FeatureHighlights...................................................................................................................................... 4
Ports, Controls and Indicator LEDs............................................................................................................. 5
Device Installation......................................................................................................................................... 5
Mounting the Device .................................................................................................................................6
Mounting the Device on a DIN Rail........................................................................................................ 6
Mounting the Device to a Panel ............................................................................................................6
Configuringthe Device...............................................................................................................................8
Serial-to-Fiber Conversion: Point-to-Point............................................................................................9
Serial Standard Conversion................................................................................................................. 11
Fiber Repeater Mode..........................................................................................................................13
Communication Ports .............................................................................................................................14
Fiber Optic Ports ................................................................................................................................. 14
Serial Terminal ....................................................................................................................................14
Specifications ..........................................................................................................................................16

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Introduction
The ISC2 is a cost-effective Single Serial media converters solution for conversion between Serial RS-
232/ RS485/ RS422 interfaces over optical fiber. The iSC2 has been designed to be fully compliant
with the standards of IEC61850-3 and IEEE1613.
The ISC2 is a utility-grade, protocol-independent, serial-to-fiber and serial standards converter for all
your serial communication requirements. The ISC2 allows RS485, RS422, or RS232 devices or
networks to communicate over secure, noise immune, fiber optic cabling at extended distances as
well convert RS232 to either RS485 or RS422 serial standards.
The iSC2 Series accepts a wide input voltage range from dual 10-36VDC or 36-72VDC power
inputs to a single input 88-370VDC or 85-264VAC, so it is suitable for harsh operating
environments. These features combined with a wide operating temperature of -40oC to +85oC,
helps protect mission critical applications from Network interruptions or temporary malfunctions.
Feature Highlights
Two-wire RS232 compliant (TX, RX)
Two-wire RS485 half-duplex compliant (D+, D-)
Four-wire RS485/422 full-duplex compliant (TX+, TX-, RX+, RX-)
Selectable 120 ohm terminations
Up to 5km on multimode fiber
Selectable fiber repeater mode (fiber in -> fiber out)
TX/RX LED indicators on RS232/485/422 traffic
Configurable RS485 half-duplex turn-around time

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Ports, Controls and Indicator LEDs
The ISC2 features various ports, controls and indicator LEDs on the front panel for configuring and
troubleshooting the device.
Number
Description
Function
1
Power Indicator LED
The power indicator LED illuminates when power is
being supplied to the device.
2
Tx LED
Tx LED illuminates when traffic is transmit to Serial
Interface.
3
RX LED
Rx LED illuminates when traffic is received from
Serial Interface.
4
Mode Selector Switch
This switch sets the device in transparent, half-duplex
(HDX), full-duplex (FDX) or reserved mode.
Device Installation
The following sections describe how to install the device, including mounting the device,
installing/removing modules, connecting power, and connecting the device to the network.

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Mounting the Device
The ISC2 is designed for maximum mounting and display flexibility. It can be equipped with
connectors that allow it to be installed in a 35 mm (1.4 in) DIN rail or directly on a panel.
Mounting the Device on a DIN Rail
For DIN rail installations, the ISC2 can be equipped with a DIN rail bracket pre-installed on the
back of the chassis. The bracket allows the device to be slid onto a standard 35 mm (1.4 in) DIN
rail.
To mount the device to a DIN rail, do the following:
1. Align the slot in the bracket with the DIN rail.
2. Pull the release on the bracket down and slide the device onto the DIN rail. If necessary,
use a screw driver to unlock the release. Let go of the release to lock the device in
position.
Mounting the Device to a Panel
Tomount the device to a panel, do the following:
1. Place the panel adapter against the panel and secure it with screws.

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2. Insert the device into the adapter. Make sure the device is secured between the two metal clips.
Power Supply Connections
The Phillips Screw Terminal Block, located on the bottom of the unit, has Phillips screws with
compression plates, allowing either bare wire connections or crimped terminal lugs. The use of #6
size ring lugs is recommended to ensure secure and reliable connections under severe shock or
vibration. The terminal block comes with a safety cover which must be removed before
connecting any wires. This cover must be re-attached after wiring to ensure personnel safety.
The iSC2 supports a single power supply (PWR1) with 4 options:
1. LV: Single Input Supply 10-36VDC
2. MV: Single Input Supply 36-72VDC
3. HV: Single universal Input 88-370VDC
4. HV: Single universal Input or 85-264VAC.
Terminal Block (for option 4)
Terminal
Number
Description
Connection
1
PWR1 (L) –Live
Connect to the (Live) of DC power supply 1 or (Live)
terminal of an AC power source.
2
PWR1 (G) –Ground
DC Power supply 1 ground connection or AC power
round connection.
3
PWR1 (N) –Neutral
Connect to the Neutral of the DC power supply 1 or
(Neutral) terminal of an AC power source.
4
G –Chassis Ground
Connected to the ground bus for DC inputs or
Safety Ground terminal for AC Units. Chassis
Ground connects to both power supply surge
grounds via a removable jumper.
Note:
Option 1,2,3 doesn’t include terminal blocks. The DV power connection should be done based on
diagram on supplied chassis.

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Power supply Connection
Chassis Ground Connection
The iSC2 chassis ground connection, located next to the terminal block, uses a #6-32 Screw. We
recommend terminating the ground connection using a #6 ring lug, and a torque setting of 15 in.lbs
(1.7Nm).
Configuring the Device
The ISC2 can be configured using the Mode DIP switch located on the right side off the enclosure.
The DIP switches are shown in Figure 8. Using the switches one can change the operating mode
of the ISC2.
100-240VAC rated equipment: A 250VAC appropriately rated circuit
breaker must be installed.
Equipment must be installed according to the applicable country wiring
codes.
88-370VDC rated equipment: A 370VDC appropriately rated circuit breaker
must be installed.
A circuit breaker is not required for DC power supply voltages of 9-48VDC.
Equipment must be installed according to the applicable country wiring
codes.

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The configuration settings are as follows:
Switch
ON
OFF
S1
1
RS232 to fiber
RS485/422 to fiber
2
RS232-to-RS485/422
conversion enabled
RS232-to-RS485/422
conversion disabled
3
Full-duplex
Half-duplex (RS485
only)
4
enabled
5
Fiber repeater enabled
Fiber repeater disabled
6
1200 –2400 baud
n/a
7
4800 –9600 baud
n/a
8
14400 –19200 baud
n/a
9
28800 –38400 baud
n/a
10
57600 –115200 baud
n/a
The ISC2 is equipped to provide conversion from serial (RS232, RS485, or RS422) to fiber optics, or
between serial standards (RS232 to RS485 / RS422). Serial to fiber optic conversion connections
can be further implemented in point-to-point, as well as optical loop configurations.
Serial-to-Fiber Conversion: Point-to-Point
The following illustrates the serial-to-fiber conversion mode of operation.
NOTE
In this example, the distance between the two ISC2 devices is less than 5 km (3.1 mi).
RS232 Device

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Position
State
Notes
1
ON
RS232 to fiber
2
OFF
RS232-to-RS485/422 conversion
3
ON/OFF
Full-duplex (485-4W or 485-2w)
4
OFF
No 120 Ohm termination
5
OFF
Fiber repeater
Note: Position 3 is applied to RS485 only
RS422/RS485 Device
Position
State
Notes
1
OFF
RS232 to fiber
2
OFF
RS232-to-RS485/422 conversion
3
ON
Full-duplex
4
OFF
No 120 Ohm termination
5
OFF
Fiber repeater
In this mode serial data is converted directly into light signal, and transmitted over multi-mode fiber
optics. The serial standard is selected by position 1 of the DIP switches: OFF (default) is for
RS485/RS422, and ON is for RS232. Position 2 should be OFF for serial to fiber conversion. Position
6-10 should be configured if RS485 communications are used, in order to have the appropriate turn-
around timer shown below selected. Positions 6-10 do not impact communications in full-duplex mode.
Baud Rate (bps)
DIP6
DIP7
DIP8
DIP9
DIP10
1200 –2400
ON
OFF
OFF
OFF
OFF
4800 –9600
OFF
ON
OFF
OFF
OFF
14400 –19200
OFF
OFF
ON
OFF
OFF
28800 –38400
OFF
OFF
OFF
ON
OFF
57600 –115200
OFF
OFF
OFF
OFF
ON

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Serial Standard Conversion
The following illustrates the connections for conversion between RS232 and RS485/422 devices.
Position
State
Notes
1
OFF
RS232 to fiber
2
ON
RS232-to-RS485/422 conversion
3
ON/OFF
Full-duplex
4
OFF
No 120 Ohm termination
5
OFF
Fiber repeater
6
ON/OFF
1200 –2400 baud
7
ON/OFF
4800 –9600 baud
8
ON/OFF
14400 –19200 baud
9
ON/OFF
28800 –38400 baud
10
ON/OFF
57600 –115200 baud
In this mode of operation, RS232 voltage levels are converted to the appropriate RS485 or RS422
signaling levels depending on the DIP switch configuration. In this mode of operation position 2 of the
DIP switches must be in the ON position when operation position of switch 1 is OFF.
Position 6 –10 of the DIP switches must reflect the proper operating baud rate.

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NOTE
In this mode of operation, no isolation is provided between RS232 device and the RS485/422 network
–both devices share the same common terminal. It should be noted that the common terminal on
RS232 devices are connected to ground. In some instances (i.e. when connecting to large RS485
networks), it may be preferential for the user to leave the RS485/RS422 shield terminal unconnected
to the ISC2 in this mode.

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Fiber Repeater Mode
As was mentioned previously in the document the max distance between the two ISC2 devices is less
than 5 km (3.1 mi). When the requirement is to support distance that is more than 5 km (3.1 mi) the
iSC2 in the Fiber Repeater Mode allows extended distance between serial devices.
Position
State
Notes
1
OFF
RS232 to fiber
2
OFF
RS232-to-RS485/422 conversion
3
OFF
Full-duplex
4
OFF
No 120 Ohm termination
5
ON
Fiber repeater
6
OFF
1200 –2400 baud
7
OFF
4800 –9600 baud
8
OFF
14400 –19200 baud
9
OFF
28800 –38400 baud
10
OFF
57600 –115200 baud
The repeat function will optically re-transmit any data received on the optical receiver, in addition to
any connected serial devices. As a result, any data transmitted from the master, will be re-transmitted
optically to the slave. In this case the distance between master and slave can be extended over the 5
km (3.1 mi).
This topology can be used for RS232, RS485 or RS422. In all cases, all repeater devices should have
the repeat function (DIP position 5) ON.

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Communication Ports
The iSC2 can be equipped with various types of communication ports to enhance its abilities and
performance. To determine which ports are equipped on the device, refer to the factory data file
available in specification.
Fiber Optic Ports
Fiber optic ports are available with ST (Straight Tip) connectors. Make sure the Transmit (Tx) and
Receive (Rx) connections of each port are properly connected and matched to establish a proper
link.
Serial Terminal
The ISC2 is equipped with a seven-terminal Phoenix-style connector. This connector can
accommodate one RS232 connection, and one RS485/422 connection. The following is the pin-out
for the serial terminal:

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Pin #
Signal
J2
1 (top)
RS232 RX
2
RS232 TX
3
Common
4
RS422 RX-
5
RS422 RX+
6
RS422 TX- / RS485 D-
7 (bottom)
RS422 TX+ / RS485 D+

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Specifications
Model Number iSC2
Physical Ports
10M Fiber port
1
RS232/RS422/RS485
1 (2 for RS232 to RS354 conversion)
Power
Input power
Single DC inputs 10 to 48VDC, Single DC Inputs 36-72VDC, or Single input universal
supply 88-370VDC or 85-264VAC with a single 10-48VDC Backup
Power consumption (Typ.)
5 Watts
Overload current protection
Present
Reverse polarity protection
Present on terminal block
Physical Characteristics
Enclosure
IP-40 Galvanized Steel
Dimension (W x D x H)
76.2(W) x 90.2(D) x 148.3(H)mm (3.0 x 3.55 x 5.84 inches)
Weight (g)
~1000 g
Environmental
Storage Temperature
-40oC to +85oC (-40oto 185oF)
Operating Temperature
-40oC to +85oC (-40oto 185oF)
Operating Humidity
5% to 95% Non-condensing
Regulatory Approvals
EMI
FCC Part 15, CISPR (EN55022) class A, EN50155 (EN50121-3-2, EN55011, EN50121-4)
EMS
EN61000-4-2 (ESD), EN61000-4-3 (RS), EN61000-4-4 (EFT), EN61000-4-5 (Surge),
EN61000-4-6 (CS), EN61000-4-8, EN61000-4-11
Shock
IEC60068-2-27
Free Fall
IEC60068-2-32
Vibration
IEC60068-2-6
Safety
EN60950-1
Warranty
Warranty
5 Years