ICF-1171I Series
Quick Installation Guide

Version 1.0, June 2022

Technical Support Contact Informationwww.moxa.com/support

 2022 Moxa Inc. All rights reserved.

P/N: 1802011710010*1802011710010*

Overview
Introduction
The ICF-1171I Series CAN-to-fiber converters are used in pairs toconnect two CAN (CAN 2.0) or two CAN FD (ISO CAN FD) devices ornetworks via single-mode or multi-mode optical fiber. The ICF-1171I
CAN-to-fiber converters provide 2 kV isolation protection for the CAN
interface and dual power inputs to ensure that your CAN system worksuninterrupted.
The ICF-1171I Series can separate and protect critical segments of thesystem from the rest of the CAN network and is protocol independent,
allowing it to work with all the different CAN protocols and frame
lengths. In other words, the higher layer CAN protocols, based on CAN(CAN 2.0) and CAN FD (ISO CAN FD), can work through the ICF-1171I
Series.
To connect two CAN devices with a fiber-optic cable, two ICF-1171I
Series converters are required.

Why an ICF-1171I CAN-to-fiber converter?
•Extends the CAN Bus Transmission DistanceTypically, the total transmission distance of a CAN (CAN 2.0) orCAN FD (ISO CAN FD) system can be extended by 2 km (multimode fiber) or by 40 km (single-mode fiber) using ICF-1171I
converters. However, the reach of these extensions depends on theenvironment, architecture, etc.

•Easily Fulfil Various Communication Scenarios
Two CAN (CAN 2.0) networks or CAN FD (ISO CAN FD) networks
can communicate with each other using different baudrates. TheICF-1171I converters can automatically detect the baudrate of theconnected CAN (CAN 2.0) device and apply the baudrate itself.
Therefore, you do not need to know the baudrate of the connected
CAN (CAN 2.0) device, making it an extremely convenient feature.
Baudrates can also be set to a predefined value via rotary switches.
Please note that Automatic baudrate detection is only supported inCAN (CAN 2.0), not in CAN FD.

•Easily Troubleshoot Communication Issues
It is easy to check if an issue exists on the CAN bus or the fiberlink. The ICF-1171I converters come with LEDs that indicate thefiber link state, fiber communication status, CAN bus state, andCAN bus communication status.

-2-Features•••••••••

Extends the transmission distance of the overall CAN bus systemConverts CAN signals to fiber and vice versa
Supports CAN (or CAN 2.0, including CAN 2.0A and CAN 2.0B) andits extension CAN FD (CAN Flexible Data Rate); conforms to theISO 11898 standard
CAN (CAN 2.0) and CAN FD (ISO CAN FD) arbitration rate (ornominal bit rate, arbitration bit rate) is up to 1 Mbps; data rate isup to 5 Mbps
Dual power inputs for redundancy
DIP switch for 120 Ω terminal resistanceWide temperature range model available for -40 to 75°C
environments (“-T” models)Supports higher layer CAN protocols such as CANopen, DeviceNet,
SAE J1939, etc.
Supports point-to-point connection to another ICF-1171I

Package Checklist
Before installing the ICF-1171I Series, verify the package contains thefollowing items:•••

ICF-1171I Series CAN-to-fiber converter with a DIN-rail kit prelocked on it
Quick Installation Guide (printed)
Warranty card

Optional Accessory•WK-30-02: Wall-mounting kit, 2 plates, 4 screws, 30 x 66.8 x 2mm

NOTE Please notify your sales representative if any of the above
items are missing or damaged.

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Mounting Dimensions
ICF-1171I-S-ST/ICF-1171I-M-ST
The appearance is the same for all, including wide-temperature (-T)
models; the only difference is the label of the model.

Top View

Front View

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ATTENTIONElectrostatic Discharge Warning!
To protect the product from damage because of electrostatic
discharge, we recommend wearing a grounding device whenhandling your ICF-1171I Series.

Hardware Installation Procedure
The ICF-1171I is designed to be attached to a DIN rail or mounted on awall. For DIN-rail mounting, push down the spring and properly attach
it to the DIN rail until it “snaps” into place. For wall mounting, install
the wall-mount kit (optional) first and then screw the device onto thewall. An M3 screw is suggested, and the minimum length of the screw
should be 7 mm.
The following figure illustrates the two suggested mounting options.

DIN-rail Installation
Step 1:
Insert the top of the DIN-rail intothe slot just below the stiff metalspring.

Step 2:
The DIN-rail attachment unit will
snap into place as shown below

To remove the ICF-1171I Series from the DIN rail, simply reverse steps
1 and 2 above.

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Wall-mounting Installation

For wall mounting, the suggested direction of the product is upright—
the same as for DIN-rail mounting.
The following figure illustrates how to attach the screws to themounting kits:
DIN Rail:Wall-mount:-6-

Power Input and Relay
The ICF-1171I supports dual power inputs for redundancy. When one
power input fails, the relay will be triggered. Be sure to install the dual
power inputs for the ICF-1171I Series and choose the correct relay
output when connecting the alarm.

Please see the terminal block definition for power input and relay in thefollowing table.
Relay
Relay
Relay
DC(Normally (Common) (Normally Powerclosed)
open)
input 1N.C.
COMN.O.
V1+

DCPower
input 1
V1-DCPower
input 2
V2+

DCPower
input 2
V2-

Please see the power input status and corresponding relay status in thefollowing table:
Power input status
Both power inputs are on/off
Power input 1 or power input 2 is on

Relay status
Normally closed (N.C.)
Normally open (N.O.)

NOTE Before connecting the equipment to DC power inputs, makesure the DC power source voltage is stable• The wiring of input terminal block shall be installed by askilled person.
• Wire type: Cu• Only use 28-14 AWG wire size, torque value 0.19 N-m.
• One individual conductor in a clamping point.

NOTE The equipment is intended to be supplied by the external powersource (UL listed/ IEC 60950-1/ IEC 62368-1), which output
complies with ES1/SELV, PS2/LPS, output rating is 12 to 48
VDC, 188.5 mA (max.), and ambient temperature 75°C

NOTE If you are using a Class I adapter, the power cord should beconnected to an outlet with an earthing connection.

CAN Pin Assignment
Please see the terminal block definition for CAN bus port in thefollowing table.
CAN High
CAN_H

CAN Low
CAN_L-7-

CAN Signal Ground
CAN_GND

Make sure CAN high (CAN_H) is connected to the CAN high pin, andCAN low (CAN_L) is connected to the CAN low pin of your CAN device.

Fiber Cable
ST-Port Pinouts

ST-Port to ST-Port Cable Wiring

ATTENTION
This is a Class 1 laser/LED product. Do not stare into the laserbeam.
1. Caution—Use of the controls or adjustments or theperformance of procedures other than those specified herein
may result in hazardous radiation exposure."
2. Complies with 21 CFR 1040.10 and1040.11, except for
conformance with IEC 60825-1 Ed. 3., as described in Laser
Notice No. 56, dated May 8, 2019.

Switch Settings
There are three DIP switches on the front panel of the ICF-1171I
Series; DIP switch 1 is reserved for future use. See the usage below.

Use DIP switch 3 to set up CAN (CAN 2.0) or CAN FD (ISO CAN FD)
mode. CAN in the table below is equal to CAN 2.0, and CAN FD is equal
to ISO CAN FD.
CAN Mode
CAN FDCAN

Switch 3ON
OFF (default)

Use DIP switch 2 to enable terminator.
120 Ω Terminator

Switch 2-8-

EnableDisableONOFF (default)

There are two rotary switches at the bottom of the ICF-1171I Series,
which is used to configure the arbitration rate or data rate of the CAN
bus. Rotary switch 1 is used to set up the arbitration rate of CAN (CAN2.0)/CAN FD (ISO CAN FD); rotary switch 2 is used to set up the data
rate of CAN FD (ISO CAN FD).
Explore the following use cases to see how you use the rotary switches:
Use case 1: My devices use CAN (CAN2.0) with communication
speed/bit rate of 1Mbps. How do I set up the baudrate of ICF-1171I?
You can set up a fixed baudrate by switching rotary switch 1 to PIN 1,and ignore rotary switch 2. Or, you can use auto baudrate by switchingrotary switch 1 to PIN 0. When the ICF-1171I receives the data frames
sent by the connected CAN device, it can detect the baudrate and set toitself.
The auto baudrate function sets up a sequence to initialize thebaudrates supported by the ICF-1171I (e.g., 1Mbps, 800 kbps, 500kbps
as in the table below).
Also, make sure the DIP switch in the front panel is set to “CAN” mode.
Use case 2: My devices use CAN FD (ISO CAN FD) with dual bit rates(or called BRS, Bit Rate Switch), nominal/arbitration rate is 1Mbps, anddata rate is 2Mbps.
In this case, please set rotary switch 1 to PIN 1, and set rotary switch 2to PIN 3. Also, make sure the DIP switch in the front panel is set to“CAN FD” mode.
Auto-baudrate is supported in CAN (CAN 2.0). To use auto baudrate,
send the CAN data to the ICF-1171I. The ICF-1171I will detect thebaudrate and apply to itself.
CAN 2.0/CAN FD Arbitration Rate
Auto baudrate (only in CAN 2.0)
1 Mbps800 kbps
500 kbps
250 kbps
125 kbps
50* kbps
25* kbps
ReservedReserved

Rotary Switch 1 Pin Position0 (Default)
123456789*Arbitration rates 25 kbps and 50 kbps are only used in CAN (CAN2.0); An arbitration rate equal to or above 125 kbps is supported inCAN FD (ISO CAN FD). For CAN FD (ISO CAN FD), the suggested ratioof arbitration rate to data rate ranges from 1:1 to 1:8.
CAN FD Data Rate
5 Mbps
4 Mbps
3 Mbps
2 Mbps
1 MbpsRotary Switch 2 Pin Position
01
23 (Default)
4-9-800 kbps
500 kbps
250 kbps
ReservedReserved

56789LED Indicators
There are 6 LEDs on the front panel of the ICF-1171I.
LEDPWR1

Color
Green
OffPWR2

GreenOffCAN TX/RX(CAN) STATE

Green(Flashing)
OffGreenRed(Flashingonce persecond)

Description
Steady ON: Power is being supplied toPWR1
Off: Power is NOT being supplied to PWR1,
or another type of other power error
Steady ON: Power is being supplied toPWR2
Off: Power is NOT being supplied to PWR2,
or another type of power error
CAN bus port is transmitting or receiving
data
No communication on CAN bus
CAN is operating normally or the autobaudrate detection is successful(According to the CAN definition, it’s called
the Error active state; Transmit error
counter or Receive error counter is below127)
Communication errors have occurred(According to the CAN definition, it’s called
the Error passive state; Transmit error
counter or receive error counter equals or
exceeds 127). Error Passive becomes Error
Active when communication (transmissionand reception) returns to normal, in otherwords, when both the TEC and the REC
decrease to less than or equal to 127.
To eliminate this error, check the following:
1. Check if the CAN cables are connected
correctly (CAN high: CAN_H, CAN low:CAN_L)
2. Check the CAN bus termination
3. Check the status of the connected CANdevices
4. Check whether the baudrate settings ofthe CAN devices are in the supported
range of the ICF-1171I’s baudrate
5. Check for possible interferences in theenvironment
Resetting the ICF-1171I is not necessary inthis case until it becomes Bus-Off.

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LEDColorRed(Steady)

Description
The Bus-Off state, or the auto baudrate
detection is unsuccessful(Bus-Off state: according to the CAN
definition, when the transmit error countexceeds 255, a CAN node will enter theBus-Off state.)
When the LED is steady red, thereception/transmission of CAN messages isnot possible.
As there are two possible reasons for thiscondition, check the following to recover:
1. Send CAN data/messages from theconnected CAN node to the ICF-1171I,
so the baudrate can be detected by
ICF-1171I.
2. Reset the ICF-1171I by reconnecting
the power input.
If this situation continues to happen, still
check the following:

FIBER TX/RX(Fiber) STATEGreen(Flashing)
OffGreenRed

1. Check if the CAN cables are connected
correctly (CAN high: CAN_H, CAN low:CAN_L)
2. Check the CAN bus termination
3. Check the status of the connected CANdevices
4. Check the baudrate settings of the CAN
devices are in the supported range ofICF-1171I’s baudrate
5. Check possible interference in theenvironment
The fiber port is transmitting or receiving
CAN data
No communication on fiber
The fiber signal is detected, and the link ison
The fiber signal is not detected, or the link
is off- 11 -Typical Scenarios Using the ICF-1171I
Connecting two CAN or two CAN FD networks

Extending Transmission Distances

Typically, the total transmission distance of a CAN (CAN 2.0) or CAN FD(ISO CAN FD) system can be extended by 2 km (multi-mode fiber) orby 40 km (single-mode fiber) using ICF-1171I converters. Note that theICF-1171I can be connected to another ICF-1171I in a point-to-pointconnection.
NOTE The transmission distance of the CAN bus side (not including
the fiber side) is limited by the "baudrate”, as stated in the ISO
11898 standard. The faster the baudrate, the shorter thetransmission distance.

Specifications
CAN Communication
CAN Bus Interface
ISO 11898, Terminals (CAN_H, CAN_L,CAN_GND)
Protocols Supported DIP switch selector for CAN (CAN 2.0) and CAN
FD (ISO CAN FD) (ISO 11898)
CAN Connector
3-pin removable screw terminal
Termination Resistor DIP switch selector for a 120-Ω terminal resistor
Baudrate
CAN (CAN 2.0): arbitration rate up to 1 Mbps
(supports auto baudrate)
CAN FD (ISO CAN FD): arbitration rate up to 1
Mbps, data rate up to 5 Mbps (does not supportauto baudrate)
System Delay
18 µs* for a pair of ICF-1171Is*18 µs is tested under CAN 1Mbps, using one CAN device and one ICF1171I with a loopback fiber cable.
Isolation Protection
2 KV
LED Indicators
PWR1, PWR2, CAN TX/RX, CAN STATE, FIBER
TX/RX, FIBER STATE
Receive Buffer
8 data frames- 12 -Fiber Communication
Connector TypeST (single-mode and multi-mode), 100Base-FX
Cable Requirements 9/125 μm (single-mode) or 62.5/125 μm (multimode)
Wavelength1310 nm (single-mode and multi-mode)Tx Power> -5 dBm (single-mode) or > -20 dBm (multimode)Rx Range-3 to -34 dBm (single-mode), -3 to -32 dBm(multi-mode)
Environmental Limits
Operating
0 to 60°C (32 to 140°F)
Temperature-40 to 75°C (-40 to 167°F) for -T model
Storage Temperature -40 to 85°C (-40 to 185°F)
Ambient Relative
5 to 95% (non-condensing)
Humidity
PowerInput Power Voltage 12 to 48 VDC dual power input for redundancy
Relay Output
1 digital output relay to alarm (normal: closed)with current-carrying capacity of 1 A @ 30 VDC
Mechanical Specifications
Dimensions
30.3 × 70 × 115 mm (1.19 × 2.76 × 4.53 in)MaterialMetal
Gross Weight
294 g (0.65 lb)사용자안내문 (User Guide)이 기기는 업무용 환경에서 사용할 목적으로 적합성평가를 받은기기로서가정용 환경에서 사용하는 경우 전파간섭의 우려가 있습니다.
(This equipment has KC approval for use in industrial environments andcould possibly interfere with household equipment.)기 종별Type of Equipment
A 급기기(업무용사용자안내문User Guide방송 통신기 이자재)Class A Equipment(Broadcasting andCommunication Equipment for
Industrial and Commercial Use)기기는업무용 (A 급) 전자파 적합기기로서 판매자점을또는사용자는주의하시기 바라며지역에서사용하는이가정 외의것을 목적으로합니다.
This equipment is the EMC conformityequipment (Class A) for Industrial andCommercial Use. The seller or user
should take note of this as thisequipment can be used in places that
exclude homes.

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