This manual describes items related to the construction of a network that employs
CC-Link IE controller network compatible products, including the matters to be studied inadvance, onsite cable installation work check items, and cable installation precautions.
We hope that you will utilize this manual to ensure smooth construction of a CC-Link IE
controller network.

Table of Contents

Chapter 1

NETWORK CABLE INSTALLATION PROCEDURE .................................... 1

Chapter 2

NETWORK SPECIFICATIONS..................................................................... 2

Chapter 3

SELECTING THE CONNECED DEVICES................................................... 3

3.1

Fiber Optic Cable ..................................................................................................... 33.2

Optical Connector .................................................................................................... 4

Chapter 4

CALCULATING AND CHECKING THE TRANSMISSION LOSS VALUE .... 5

4.1

Calculating the Transmission loss Value ................................................................. 5

4.2

Transmission loss Measurement Method................................................................ 6

Chapter 5

PRECAUTIONS ............................................................................................ 8

5.1

Installing the Cable .................................................................................................. 8

5.2

Fusion Splicing and Adapter Splicing..................................................................... 10

Chapter 1

NETWORK CABLE INSTALLATION PROCEDURE

The following describes the CC-Link IE controller network cable installation procedure.

Transmission path design
Fusion splicing or splicing byadaptor
Selection of fiber optic cableCalculation of transmission loss

Are CC-Link IE
controller network
specifications satisfied?

NoYes
Preparation of devices

Cable installation and checkTransmission loss measurement

Is the transmission loss valueless than or equal to therecommender value ?

NoYesFigure 1 Cable Installation Procedure1

Chapter 2NETWORK SPECIFICATIONSThe CC-Link IE controller network is an Ethernet-based loop topology network that
employs IEEE802.3 1000Base-SX technology in its physical layer and data link layer.
Table 1 describes the communication specifications related to CC-Link IE controller
network cable laying.
Table 1 Communication Specifications
ItemSpecification

Communication speed

1Gbps

No. of connected nodes per network

120 nodes (1 control node, 119 normal nodes)

Type of cable

Fiber optic cable (multimode fiber)

Total cable length

66,000m (with 120 nodes connected)

Maximum distance between nodes

550m

Maximum number of networks

239

Topology

Dual loop

Fiber optic

IEEE802.3 1000Base-SX (MMF) compatible fiber

cable

optic cablespecifications

Standard

IEC60793-2-10 Types A1a.1 (50/125μm multimode)

Transmission loss (max)

3.5 dB/km or less [λ=850nm]

Transmission band (min)500 MHz/km or greater [λ=850nm]

Connector
specifications

Duplex LC Connector (LCF connector)
Standard

IEC61754-20: Type LC connector

Insertion loss

0.3 dB or less

Polishing method

PC polishing2

Chapter 3

SELECTING THE CONNECED DEVICES

3.1 Fiber Optic Cable
With the CC-Link IE controller network, it is recommended that you use IEC
compliant CLPA recommended fiber optic cable.
Table 2 below describes the representative specifications.
Table 2 Fiber optic Cable Specifications
No.

Item1

Fiber optic type2

Compliant standardSpecifications
1000Base-SX compatible multimode GI fiber optic
IEC60793-2-10 A1a .1

8Material
Outer
diameterMaterial
Clad
Outer
diameterOuter
Primary coating
diameter
Outer
Secondary coating
diameterOuter
Cord
diameter
Operating temperature

9Permissible bending radius

10

Transmission loss

3.5dB/km or less [λ=850nm]

11Transmission band

500MHz/km or greater [λ=850nm]

34567Core

Silica glass
50±3μmSilica glass
125±2μm0.25 mm0.9±0.1 mm
2.0 ± 0.2mm x 2 (2.0×4.0mm)-20 to 60°C
15mm (after cable installation)
30mm (during cable installation)

3

3.2

Optical Connector
With the CC-Link IE controller network, it is recommended that you use IEC
compliant CLPA recommended optical connectors.
Table 3 below shows the representative specifications.
Table 3 Optical Connector Specifications

No.

ItemSpecifications

1

Optical connector type

Duplex LC Connector (LCF connector)

2Compliant standard

IEC61754-20: Type LC connector

3Insertion loss

0.3dB or less (with respect to master fiber)

4Return loss

20dB or greater

5Polishing method

PC polishing4Chapter 4

CALCULATING AND CHECKING THE TRANSMISSION LOSS VALUE

During optical cable installation, confirm that the transmission loss between nodes is lessthan or equal to the recommended transmission loss value.
4.1 Calculating the Transmission loss Value
Calculate the transmission loss value using the calculation formula below, andconfirm that the value is less than or equal to the recommended transmission lossvalue (4.5dB).
Transmission loss value (dB) = Fiber optic transmission loss standard value(dB/km) x Fiber optic cable length (km) ······························[1]+ Fusion splicing loss value (dB/location) x Number offusion splicing (locations) ····················································[2]+ Adapter splicing loss value (dB/location) x Number ofadapter splicing (locations) ·················································[3][1] Fiber optic cable transmission loss standard value (dB/km): According to Fiber
Optic Cable Specification[2] Fusion splicing loss value (dB/location): 0.2dB or less/location[3] Connector adapter splicing loss value (dB/location): According to opticalconnector type and manufacturer

Transmission loss value (dB) ≤ 4.5 (dB) …CLPA recommended value[Calculation example]
Conditions:
GI fiber optic (transmission loss value: 3.5dB/km)

Total cable length of 550m

Table 4 Examples of Connector Adapter Splicing Loss ValueConnector TypeSCLCNo. ofPolishingCoresMethodSingle-corePC polishing

Fiber Optic Type

Remarks

SM (dB or less)

GI (dB or less)

0.7

0.4

Reference

0.5

0.3

value

Note: The values above differ according to manufacturer.
For details, check with the adapter manufacturer.

5Station addition planned
LCSC SCLC LC

Termination box 12

Termination box 2

SC SCLC

Termination box 3

FusionsplicesplicingFusion
connection

Transmission[1] Cable[2] Fusion splice[3] Connector adaptertransmission loss

connection loss

connection loss

= (3.5dB/km×0.55 km) + (0.2db x 2 locations)+ (0.4dB x 2 locations + 0.3 db x

loss value (dB)

1 location)= 3.425(dB)

4.2 Transmission loss Measurement Method
Measure the transmission loss between nodes following the procedure below, andconfirm that the measured value is less than or equal to the transmission loss
value calculated in Section 4.1.
(1) Measuring the optical input Pin (Standard outgoing beam: Measured cableincoming beam)[1] Connect an exciter.
Pin measurement

Exciter
Optical source

Power meter

Wavelength：
850nm

Optical sensor[2] Set the mode to dBm mode and measure Pin [dBm].

6(2) Measuring the optical output Pout (measured cable outgoing beam)[1] Connect the relay adapter and optical fiber cable to be measured to theexciter.
Pout measurement

Relay adapter

Power meter

Optical source
IN sideOUT side

Wavelength:
850nm
Exciter*1

Optical sensor

Fiber optic cable to be measured

Including all adapter splicing*1

locations and fusion splicing locations(including all splicing locations between nodes).
[2] Measure Pout (dBM) in dBm mode.
(3) Transmission loss value Px [dB]
P x [dB] = Pin [dBm] - Pout [dBm] - Pc [dB] (Adapter splicing loss whenconnected with exciter)(4) Since the CC-Link IE controller network uses a two-core optical fiber cable,measure the second fiber optic core in the same manner.

7Chapter 5

PRECAUTIONS

5.1 Installing the Cable
During fiber optic cable installation, be sure to follow the following precautions.
Cable path
•Use a pit or cable rack for the cable routing as far as possible.

•When using conduit, ensure that the inner diameter of the conduit is large
enough to accommodate the dimensions of the cable connector. When
providing a pull box in the conduit, select a box that satisfies the cable’spermissible bending radius.

•Use a dedicated cable routing path as far as possible. When sharing thepath with other cables, lay the fiber optic cable last.

•Use a path into which water or oil cannot enter, and which will not reachtemperatureshigherorlower

thantheapplicabletemperature

specifications of the cable.
Pipe path•Install the cable without directly pulling the cable. Instead, fix the cable
onto a pulling rope or the like. Depending on the cable specification,
cables that can be directly pulled also exist. Check with the manufacturer.

Precautions for cable pulling•Pull the cable from the leading end at a pulling speed of 10m/min or less.
Make sure that the tension applied to the cable is even, and pull the cable
at a tension half or less than the permissible tension.

•Establish a bending radius during pulling that is at least two times theminimum permissible bending radius or higher.

•Take care that the cable does not become entangled during installation.
Particularly, certain hanger rollers are structured in such a way thatreadily causes entanglement. When installing lengthy cables, it isrecommended that you use a wire wheel.

•Make sure that kinks are not created in the cable.

Protection with respect to permissible tension•When installing the cables vertically or when using aerial installation,
support the cable so that the tension caused by its own weight does notexceed the permissible tension.

8

Prevention of moisture permeation•In general, the optical fiber itself has poor water resistance. Permeation ofwater from the optical cable ends may have adverse effects in the longterm. Additionally, there have been cases where the condensation thatarises due to temperature gradients within the laid optical cable route
permeates the optical cable, resulting in adverse effects. When installingthe optical cable, be sure to make the optical cable ends waterproof.

Protection of connector section•Protect the connector section with a vinyl hose, pulling eye, or the likewhen laying the cable. Do not pull the connector section. The connector
section is especially sensitive to impact and tension.

Other
•

Seal both ends of the cable at a time other than when installing the cableto prevent water seepage.

•The ends of the fiber optic cable are sharp. Be careful during handling.

•Do not touch or bump the end of the optical connector.

95.2 Fusion Splicing and Adapter Splicing
The length of the optical fiber cable can be extended by using a fusion splice orrelay adapter. When making each connection, be sure to note the following.
Fusion splicing precautions•

Execute the fusion splicing work following the procedure described in theuser’s manual of the fusion splicer (or other tool) used. Additionally, besure to follow the stated precautions.

•Do not splicing the cable if the core optical fiber is twisted.

Protection of connected locations•Make sure that tension is not applied to fusion splicing locations or
adapter splicing locations at the termination box. Additionally, make sure
to maintain the required space for installing the termination box. Although
the size required increases with increases in the number of connectedunits, prepare a space approximately 15cm x 10cm in size, minimum. The
termination box differs according to the number of units connected,connection type, and cable form to be connected. For details, check withthe fiber optic cable manufacturer.

Splicing loss
•Loss occurs at fusion splicing locations and adapter splicing locations.
Check the information described in Chapter 4, and confirm that thetransmission loss is less than or equal to the acceptance value.

10Direct any inquiries regarding this manual to:

CC-Link Partner Association
6F Meiji Yasuda Seimei Ozone Bldg., 3-15-58, Ozone, Kita-ku,
Nagoya 462-0825, Japan
TEL:+81-52-919-1588
FAX:+81-52-916-8655
URL:http:/www.cc-link.org/E-Mail :cc-link@post0.mind.ne.jpReproduction of the contents of this manual in whole or in part without permission isprohibited.

CC0809-13-A

Prepared in September,2008