CC-Link IE Field Network

Cable Installation ManualThis manual describes items to be considered in advance to configure a network system using CC-Link IE
Field Network compatible products, items to be checked at the cable installation site, and precautions forwiring. Please use this manual to achieve smooth configuration of a CC-Link IE Field Network system.

RevisionsSubnumberRevisionIssuedAFirst edition

June, 2010

B

• Precautions for wiring and installation of connectors and cables were

March, 2017

added and modified.
Chapter 1 NETWORK CONFIGURATION PROCEDURE
Section 2.1 Network Configuration Overview
Chapter 3 SELECTING CONNECTION DEVICES
Section 3.1 Cables
Section 4.1 Wiring Length
Section 4.3 Connector and Cable Connection and Precautions
Section 4.3.1 RJ45 connector
Section 4.3.3 Connector connection precautions
Section 5.1 Wiring Precautions
Appendix A1. Structure of FA Cable Conductors
Appendix A2. Crimp Height
Appendix A3. Deformation of Connectors• Descriptions of the M12 connector were added.
Section 2.1 Network Configuration Overview
Section 2.3 Network Specifications
Section 3.2 Connectors
Section 3.3 Relay Connectors
Section 4.3.2 M12 connector
Section 5.1 Wiring Precautions

1

CONTENTS

CHAPTER 1 NETWORK CONFIGURATION PROCEDURE ................................................................................ 3
CHAPTER 2 NETWORK SPECIFICATIONS ......................................................................................................... 4
2.1 Network Configuration Overview ................................................................................................................... 4
2.2 Network Configuration ................................................................................................................................... 5
2.3 Network Specifications .................................................................................................................................. 5
2.4 Topologies ..................................................................................................................................................... 6
2.5 Effects of Temperature .................................................................................................................................. 7
CHAPTER 3 SELECTING CONNECTION DEVICES ............................................................................................ 8
3.1 Cables ........................................................................................................................................................... 8
3.2 Connectors .................................................................................................................................................... 8
3.3 Relay Connectors .......................................................................................................................................... 9
3.4 Layer 2 Switch ............................................................................................................................................... 9
CHAPTER 4 CHECKING THE WIRING ............................................................................................................... 10
4.1 Wiring Length .............................................................................................................................................. 10
4.2 Number of Connectors ................................................................................................................................ 11
4.3 Connector and Cable Connection and Precautions .................................................................................... 12
4.4 Transmission Characteristics ...................................................................................................................... 14
CHAPTER 5 INSTALLATION AND WIRING ....................................................................................................... 17
5.1 Wiring Precautions ...................................................................................................................................... 17
5.2 Grounding Method....................................................................................................................................... 19
APPENDICES ....................................................................................................................................................... 23
A1. Structure of FA Cable Conductors .............................................................................................................. 23
A2. Crimp Height ............................................................................................................................................... 24
A3. Deformation of Connectors ......................................................................................................................... 24

2

Chapter 1 NETWORK CONFIGURATION PROCEDURE
The following figure shows the CC-Link IE Field Network configuration procedure.
For designing a system, refer to the precautions throughout this manual.
Start

Network design
・Select an Ethernet cable.
・Check the cable length between devices.
・Set the number of cascade connections.

Are the CC-Link IE Field
Network specifications
satisfied?

Chapter 2 NETWORK SPECIFICATIONS

NO

YES

Preparing devices

Chapter 3 SELECTING CONNECTION DEVICES

Installing cables

Chapter 5 INSTALLATION AND WIRING

Checking thewiringChapter 4 CHECKING THE WIRING

Are there any problems?

YES

NO

End
Figure 1 Network Configuration Procedure

3Chapter 2 NETWORK SPECIFICATIONS
2.1 Network Configuration Overview
CC-Link IE Field Network components
Station:A device that is connected over CC-Link IE Field Network to which any of station
numbers 0 to 253 can be assigned.
The station types are described below.
Master station
A node that has control information (parameters) and manages cyclic
transmission
Local station
A node capable of performing n:n bit data and word data cyclic transmission
and transient transmission with the master station and other local stations, andperforming transient transmission with slave stations, excluding remote I/Ostations. It has server functions and client functions during transienttransmission.
Intelligent device station
A node capable of performing 1:n bit data and word data cyclic transmission
and transient transmission with the master station, and performing transienttransmission with slave stations, excluding remote I/O stations. It has server
functions and client functions during transient transmission.
Remote device station
A node capable of performing 1:n bit data and word data cyclic transmission
and transient transmission with the master station, and performing transienttransmission with slave stations, excluding remote I/O stations. It has server
functions during transient transmission.
Remote I/O station
A node capable of performing 1:n bit data cyclic transmission with the masterstationSlave station
A generic term for a node (local station, remote I/O station, remote device
station, intelligent device station) other than the master station

Connection cable:

An ANSI/TIA/EIA-568-B (Category 5e) compliant cable

Connector:

An ANSI/TIA/EIA-568-B (Category 5e) compliant RJ45 connector, or an IEC
61076-2-109 compliant X-coding 8-pin M12 connector.

Relay connector:

A relay connector used for connecting cables to ensure independence,
maintainability, and environmental resistance of the machine.
It is also used when stranded-wire cables are used for in-panel wiring and solidwire cables for out-panel wiring, to reduce stress on connector connection areasof the machine. (Refer to Section 5.1 "Wiring Precautions".)

Layer 2 switch:

A relay device having multiple Ethernet ports that transfer frames in data link
layer processing. It is also referred to as a switching hub.
The layer 2 switch enables to use star topology.
In addition, line topology and star topology can be used together in a network.

4

2.2 Network Configuration
A CC-Link IE Field Network station is specified by its network number and station number. A network
number is used to identify each network. Relay stations relay communication data between the networks
to enable stations connected to different networks to be communicated with each other.
Master station
Station No. 0
Network No. 1
Slave station
Station No. 2
Master station
Station No. 0

Relay stations

Slave station
Station No. 1

Slave station
Station No. 1
Network No. 2

Slave station
Station No. 2

Slave station
Station No. 3

Slave station
Station No. 4
Master station
Station No. 0

Relay stations

Network No. 3
Slave station
Station No. 2

Slave station
Station No. 1

Figure 2 Network Configuration
2.3 Network Specifications
CC-Link IE Field Network is an Ethernet based network that employs IEEE 802.3 (1000BASE-T)
technology on its physical and data link layers. Table 1 describes the communication specifications
related to the cable installation of CC-Link IE Field Network.
Table 1 Communication Specifications
Item
Specifications
Communication speed
1 GbpsMaximum number of networks
239
Master station
1
Number of connected
nodes per network
Slave station
253
IEEE 802.3 1000BASE-T cable.
ANSI/TIA/EIA-568-B (Category 5e) compliant 4-pair
Cable specificationsbalanced-type shielded cable.
A double-shielded type cable is recommended.
Connector specifications
ANSI/TIA/EIA-568-B (Category 5e) compliant RJ45
connector with shields
IEC 61076-2-109 compliant X-coding 8-pin M12connector
Cable length between devices
Maximum length: 100 m(ANSI/TIA/EIA-568-B (Category 5e) compliant)52.4 Topologies
CC-Link IE Field Network supports line, star, and ring topologies. Star topology requires a layer 2 switch.
Line topology and star topology can be used together in a network.

LineIntelligent
device station

Master station

Local station

StarIntelligent
device station

Local station

Local station

Local station

Master station

Layer 2 switch

Intelligent
device station

Local station

Intelligent
device station

Master station

Intelligent
device station

Line/
Star

Intelligent
device station

Layer 2 switch

Intelligent
device station

Local station

Master station

Local station

Intelligent
device station

RingIntelligent
device station

6

Local station

2.5 Effects of Temperature
The maximum length between devices in CC-Link IE Field Network differs according to the temperatureenvironment (cable installation environment) where they operate. Determine the cable length between
devices, referring to Table 2.
For details, calculate the insertion loss between devices using the calculation formula described in
Section 4.4, and check that the value is within the specified value.
Table 2 Temperature Environment and Maximum Length Between Devices (Examples)
Cable ambient

Maximum cable length

Maximum length between devices [m]temperature (ºC)

L [m](Channel including patch cords in Figure 3)

20

90.0

100.0

25

89.5

99.5

30

88.5

98.5

35

87.7

97.7

40

87.0

97.0

45

86.5

96.5

50

85.5

95.5

55

84.7

94.7

60

83.0

93.0

(Referenced standard: ANSI/TIA/EIA-568-B.2-1 Annex G)
Condition) Table 2 assumes a channel that includes a 10 m patch cord or device cord (under anenvironment of 20˚C) as shown in Figure 3.

Relay connector

Relay connector
DeviceDevicePatch cord

Cable

Patch cord

5m

Ｌ[m]

5m

Figure 3 Temperature Environment and Channel Block Diagram

7

Chapter 3 SELECTING CONNECTION DEVICES
It is advisable to use recommended products that have passed the CLPA tests.
In addition, in the selection of cables and connectors, check that the combination of a cable and aconnector is appropriate in terms of the wire conductor size (AWG), the structure of conductor (solid
wire or stranded wire), the outside diameter of the insulator, the outside diameter of the cable, shield,
Category, and others. For details, refer to Section 4.3.3 "Connector connection precautions".
3.1 Cables
Use ANSI/TIA/EIA compliant Ethernet cables (Category 5e or higher) in CC-Link IE Field Network.
Table 3 CC-Link IE Field Network Recommended Cable Specifications
Item

Specifications
4-pair balanced type shielded cable,
double-shield type
ANSI/TIA/EIA-568B (Category 5e)
8 (4 twisted pairs)
Aluminum tape
Annealed copper braided wire

Cable type
Compliant standard
Number of core wires

Cross-sectional view example

Double shield

Conductor
Core wire 1
Core wire 2

Tape
Double shield
Cable outer sheathCore wire identification (color of
insulating material)
Core wire 1

Core wire 2

Blue

White/Blue

OrangeWhite/Orange

GreenWhite/Green

Brown

White/Brown

Note) • When wiring cables across a long distance, use solid-wire cables of 24 AWG or higher. For details, refer to
Chapter 4.
• When wiring cables across a short distance, it is advisable to use stranded-wire cables and movable cables
that are more flexible and easy to handle, to avoid stress on the connection area of the connectors. Refer
to Section 5.1 and Appendix A1. "Structure of FA Cable Conductors".
• Select environment-friendly components if the wiring run is to be built in a special environment (for example,
heatproof, oilproof, and movable parts) within a factory. For details on the environmental resistance of eachcomponent, refer to the specifications from each manufacturer.

3.2 Connectors
Use ANSI/TIA/EIA-568-B (Category 5e) compliant RJ45 connectors with shields.
For M12 connectors, use IEC 61076-2-109 compliant X-coding 8-pin connectors.
8

3.3 Relay Connectors
Use relay connectors compliant with the ANSI/TIA/EIA-568-B (Category 5e) RJ45 jack specifications.
For M12 connectors, use IEC 61076-2-109 compliant relay connectors.
Use relay connectors with shields.
3.4 Layer 2 Switch
Use a layer 2 switch that satisfies the conditions below in CC-Link IE Field Network.
A repeater hub cannot be used.
(1) IEEE 802.3 1000BASE-T compliant(2) Auto MDI/MDI-X function supported(3) Auto negotiation function supported
3.4.1 Number of layer 2 switches
Number of layer 2 switches = A
Latency (μsec) of layer 2 switch i = Bi
Number of slave stations = C
Latency (μsec) of slave station j = Dj (target: 1.5 μsec)
Value (μsec) of the token monitoring time (NetWatchTimer) in master station = E (target: 1500 μsec)
Install layer 2 switches within the number that satisfies the formula below.
(Total latency of all layer 2 switches + Total latency of all slave stations + Network delay) × 2 + Token hold
time
A

C

i=1

j=1

= (ΣBi + ΣDj + 0.555 μsec × (A + C)) × 2 + 300 μsec (maximum value) ≤ E[Calculation example]
Where,
Number of layer 2 switches = A = 20
Latency of layer 2 switch i = Bi = 8.0 μsec
Number of slave stations = 120
Latency of slave station j = Dj = 1.5 μsec
Value (μsec) of the token monitoring time (NetWatchTimer) in master station = E = 1500 μsec
Then,
20

120

i=1

j=1

= (Σ8.0 μsec + Σ1.5 μsec + 0.555 μsec × (20 + 120)) × 2 + 300 μsec
= 1135.4 μsec ≤ 1500 μsec (= E)
Therefore, the number of installable layer 2 switches is 20.
Note
The latency of layer 2 switch varies depending on the system configuration and presence oferror stations as well as each layer 2 switch type. It is advisable to test the system in anenvironment close to the production environment before actual operation.
9

Chapter 4 CHECKING THE WIRING
The wiring between CC-Link IE Field Network devices (or between a CC-Link IE Field Network device anda layer 2 switch when a layer 2 switch is used) must comply with the ANSI/TIA/EIA-568-B Category 5estandard. When installing cables, check the following:
1)
2)
3)
4)

Wiring length
Number of connectors
Connector (plug/jack) and cable connection
Transmission characteristics

4.1 Wiring Length
The maximum physical wiring length between devices is 100 m in CC-Link IE Field Network.
(The term "device" refers to a CC-Link IE Field Network device, layer 2 switch, and others. Passive
components that connect cables, such as connectors, do not fall under the category of device, and are
regarded as a part of the wiring.)
The ANSI/TIA/EIA-568-B standard, which defines wiring specifications, refers to wiring between thesetwo devices as a channel, and specifies channel transmission characteristics as well as the transmission
characteristics of cables and connectors themselves, assuming a combined use of the cables andconnectors.
In the example of Figure 4, there are five channels. The required wiring length of each channel is 100
m or less, and each channel must satisfy specified transmission characteristics.
CC-Link IE Field
Network device

CC-Link IE Field
Network device

CC-Link IE Field
Network device
Layer 2 switch

Channel
100 m or less

Channel
100 m or less

Stranded-wire
Relay
cable

connector

CC-Link IE Field
Network device

Solid-wire cable

Relay
connector

Channel
100 m or less

Channel
100 m or less
Stranded
-wire
cable

CC-Link IE Field
Network device

Channel
100 m or lessFigure 4 Wiring Length
The transmission characteristics of the wiring between devices, that is, each channel, needs to satisfy
the specified channel value. It depends on the cable type and ambient temperature, and may not extend
up to 100 m in certain cases. Especially, the total insertion loss and propagation delay of wiring
components (cables and connectors) used need to be equal to or less than the specified channel value.
For details, refer to Section 4.4.
Particularly, be careful with the cases below.
・ When a stranded-wire cable is used
A stranded-wire cable generally causes significant insertion loss, resulting in failure tomeet the specified channel insertion loss value at a length of 100 m.
10

* ANSI/TIA/EIA-568-B Category 5e defines standard channel values assuming a
combination of 90 m solid-wire cable and 10 m stranded-wire cable. Stranded-wirecables cause greater insertion loss than solid-wire cables, thus resulting in a shortertransmittable distance. For details, contact the cable manufacturer. When wiring cables
across a long distance, use a solid-wire cable.
・ When a conductor is slender
When the conductor is slender by more than 24 AWG (0.5 mm), insertion loss increases,
resulting in a shorter transmittable distance.
・ When a cable has a special specification, such as a movable cable
Before using a cable, check the transmission characteristics (particularly, insertion loss
and propagation delay) and transmittable distance presented by the cable manufacturer.
・ When multiple cables are connected in combination
For example, when a device is installed inside a control panel and connected with a shortcable, the length, insertion loss, and propagation delay of the cable must also be
considered. When a relay connector (jack-jack) or another connector is used to connect
multiple cables, the insertion loss and propagation delay of all cables and connectors
between the devices must be considered.
・ When the ambient temperature is highAs the temperature rises, the insertion loss of a cable increases, which shortens thetransmittable distance. As an example of a general cable with shields, insertion loss
increases by about 0.2% per 1˚C. The insertion loss specifications of the cable arenormally set as the value at 20˚C. If the temperature of the cable increases even partly,
the cable must satisfy the specified insertion loss at its increased temperature. If there isno margin with respect to the specified channel value at 20˚C, the insertion loss of thecable may exceed the specified value when the ambient temperature is changed.
Calculate the insertion loss of the cable at high temperatures based on the temperature
coefficient specifications set by the cable manufacturer.

4.2 Number of Connectors
A single channel must have four connectors or less. Note the following conditions.
・ The plugs that connect to the devices at both ends of each channel are not counted. A set of plugand jack for cable connection is counted as one connector. The number of connectors must be
four or less.
When a relay connector (jack-jack) is used, calculate one relay connector as two connectors.

11

4.3 Connector and Cable Connection and Precautions
A poorly processed connection may deteriorate waterproof performance of the M12 connector or cause
miscommunications due to contact failure between a cable and a connector. Follow the processing
procedure specified by the connector manufacturer with care when processing connectors and cables.
4.3.1 RJ45 connector
When connecting a cable and a connector (plug/jack), follow the connection method defined in the
ANSI/TIA/EIA-568 standard and the connection method and work procedure specified by the connector
manufacturer.
The ANSI/TIA/EIA-568 standard specifies two connection methods, T568A and T568B, which are
shown below. Any other connection method results in the risk of miswiring, increasing the possibility
that the predetermined transmission characteristics will not be achieved and communications will fail.
Pair 3

4

1

5

6

7

8

2

Pair 13

4

5

Pair 4

6

White/
OrangeOrangeWhite/
GreenBlue
White/
Blue
Green

3

Pair 2White/
Brown
Brown

2

Pair 4

Orange1Pair 1White/
Green
Green
White/
OrangeBlue
White/
Blue

Pair 3

T568A connection

7

8

White/Brown
Brown

Pair 2

T568B connection

Figure 5 Connection Method with the RJ45 Connector (Plug)
Unless otherwise specified, it is advisable to use the same connection method (through a straight cable)
at both ends of the cable.
4.3.2 M12 connector
For the connection method with the M12 connector that is compliant with the IEC 61076-2-109 standard,refer to the figure and table below.
Note that the connection pin layout of the M12 connector is slightly different from that of the RJ45
connector.

Female side

Male side

Figure 6 M12 (X-coding) Connector
12

Table 4 Comparison of the Connection Methods with the M12 Connector (RJ45/M12)
Cable color

Cable color

RJ45 connection

M12 (X-coding) connection(T568A)(T568B)pin number

pin number

White/GreenWhite/Orange

1

1

Green

Orange22White/Orange

White/Green

3

3

Blue

Blue

4

8

White/BlueWhite/Blue

5

7

Orange

Green

6

4

White/Brown

White/Brown

7

5

Brown

Brown

8

6

4.3.3 Connector connection precautions
A poorly processed connection may deteriorate waterproof performance of the M12 connector or cause
miscommunications due to contact failure between a cable and a connector. Follow the processing
procedure specified by the connector manufacturer with the notes below in mind when connecting
cables and connectors.
In addition, check that the combination of a cable and a connector is appropriate in terms of the wire
conductor size (AWG), the structure of conductor (solid wire or stranded wire), the outside diameter ofthe insulator, the outside diameter of the cable, shield, Category, and others.
● Structure of cable conductors
Cables are categorized into solid-wire type and stranded-wire type, and connectors are also grouped
into the ones for solid wires, stranded wires, and both wires. Check that the combination of a cableand a connector is appropriate.
Some combinations are not allowed, such as a solid-wire cable and a connector for stranded wires.
Refer to Appendix A1. "Structure of FA Cable Conductors".
● Cable outside diameter
Check that the combination of a cable outside diameter and a connector used is appropriate.
If not, the connector may be damaged or the cable strength may decrease.
● Shield and shield wire processing
Follow the processing procedure specified by the connector manufacturer, and securely connect theshield wire of a cable to the shield of a connector.

13

● Crimp height
For the RJ45 connector (plug) with crimp-type contacts, it is important that the crimp height is evenand within the specified value.
The height outside the specified value may cause miscommunications.
Refer to Appendix A2. "Crimp Height".
● Dedicated tools
Use a dedicated tool specified by the connector manufacturer, if any.
Otherwise, a proper wiring connection may not be achieved.
A proper wiring connection may also not be achieved when the dedicated tool is deteriorated ordamaged. Inspect the tool regularly.
● Reprocessing of a connector
Reprocessing a connector is not recommended.
If a connector is reprocessed, a communication error may occur due to deformation or damage of theconnector.
4.4 Transmission Characteristics
The wiring between devices must satisfy the channel transmission characteristics requirements of
ANSI/TIA/EIA-568-B Category 5e. However, if the installation technique is inappropriate, the channeltransmission characteristics requirements may not be satisfied even if wiring components (cables andconnectors) that satisfy the Category 5e standard are used. Once wiring is complete, it is advisable
to measure the characteristics with a field tester to verify whether the specified value is satisfied.
The main transmission characteristics specified in the Category 5e standard include the items below.
For details on the specified values, refer to the ANSI/TIA/EIA-568-B Category 5e standard.
・
・
・
・
・
・
・
・

Insertion loss, IL
Near end crosstalk loss, NEXT
Power sum near end crosstalk loss, PSNEXT
Equal level far end crosstalk, ELFEXT
Power sum equal level far end crosstalk, PSELFEXT
Return loss, RL
Propagation delay
Delay skew

Of the above, insertion loss and propagation delay can be calculated approximately from thespecification values of the cables and connectors used in the wiring. In particular, when a cable having
a length near the 100 m (standard upper limit), a movable cable, or a special cable with a small
conductor size is used, or when a cable is used in a particularly high ambient temperature environment,
whether the cable satisfies the specified channel value in the actual configuration and at the actual
operating ambient temperature or not needs to be checked in advance.

14

If the calculated value does not satisfy the specified channel value, satisfy the specified channel value
by either shortening the total cable length by reviewing the layout, shortening the length of movable
cables or cables with a small conductor size as much as possible, or using cables with a smaller
insertion loss and propagation delay. If none of these is possible, consider using a layer 2 switch andso on in the system.
All items other than the insertion loss and propagation delay require measurement using a measuring
device such as a field tester since values cannot be simply calculated from the cable and connector
specification values.
● Approximate calculation of propagation delay
When two types of cables and multiple connectors (plug + jack) are used
Cable 1 propagation delay at 10 MHz per 100 m: Delaycable1 (ns/100 m) (Normally 545 ns/100 m or less)
Cable 2 propagation delay at 10 MHz per 100 m: Delaycable2 (ns/100 m)
Total lengths of cable 1 and cable 2: Lcable1, Lcable2 (m)Propagation delay of connector (plug + jack): Delayconn (ns) (Normally 2.5 ns or less. Use 2.5 ns for calculation.)
Number of connectors: n
Propagation delay of channel (wiring between devices): Delaychannel (ns)

Delaychannel = Delaycable1 × Lcable1 / 100 + Delaycable2 × Lcable2 / 100 + Delayconn × n (Formula A)
Check that the channel propegation delay calculated above is equal to or less than the specified
channel value (555 ns).
The following is a calculation example where a solid-wire cable (cable 1) and a special cable having
a long propagation delay (cable 2) are used together.
Cable 1 propagation delay at 10 MHz per 100 m: Delaycable1 = 545 (ns/100 m)
Cable 2 propagation delay at 10 MHz per 100 m: Delaycable2 = 600 (ns/100 m)
Propagation delay of connector (plug + jack): Delayconn = 2.5 (ns)Number of connectors: n = 4
Propagation delay of channel (wiring between devices): Delaychannel (ns)

Delaychannel = 545 × Lcable1 / 100 + 600 × Lcable2 / 100 + 2.5 × 4
Example 1: When the total length of cable 1 is 80 m, and the total length of cable 2 is 3 m
Delaychannel = 545 × 80 / 100 + 600 × 3 / 100 + 10 = 464 (ns)The value satisfies the specified channel propagation delay value, 555 ns or less. The cable canbe used.
Example 2: When the total length of cable 1 is 40 m, and the total length of cable 2 is 60 m
Delaychannel = 545 × 40 / 100 + 600 × 60 / 100 + 10 = 588 (ns)The value does not satisfy the specified channel propagation delay value, 555 ns or less. The cablecannot be used.
When a total of 100 m length of cable with the propagation delay (545 ns/100 m) specified in the
ANSI/TIA/EIA-568-B Category 5e standard and four connectors (propagation delay: 2.5 ns) are used,
the propagation delay becomes 555 ns (a value exactly equivalent to the specified channel value). In
this case, the propagation delay does not need to be calculated as long as a special cable with a longpropagation delay is not employed.

15

● Approximate calculation of insertion loss
When two types of cables and multiple connectors (plug + jack) are used
Cable 1 insertion loss per 100 m: ILcable1 (dB/100 m)
Cable 2 insertion loss per 100 m: ILcable2 (dB/100 m)
Total lengths of cable 1 and cable 2: Lcable1, Lcable2 (m)Insertion loss of connector (plug + jack): ILconn (dB)
Number of connectors: nInsertion loss of channel (wiring between devices): IL channel (dB)ILchannel = ILcable1 × Lcable1 / 100 + ILcable2 × Lcable2 / 100 + ILconn × n (Formula B)
Temperature conversion formula for cable insertion loss
Cable 1 insertion loss per 100 m at 20˚C: ILcable1,20˚C (dB/100 m)
Temperature coefficient of cable 1 insertion loss: k cable1 (%)
Cable temperature: t (˚C)
Cable 1 insertion loss per 100 m at t (˚C): ILcable1,t˚C (dB/100 m)

ILcable1,t˚C = ILcable1,20˚C × (1 + (t - 20) × k / 100) (Formula C)
To calculate the insertion loss of a channel at t˚C, use the values of ILcable1,t˚C and ILcable2,t˚C calculatedby (Formula C) in place of ILcable1 and ILcable2 of (Formula B).
Check that the channel insertion loss calculated above is equal to or less than the specified channel
value. While the value must satisfy the specified channel value across the entire bandwidth of 1 MHz
to 100 MHz, normally a general assessment can be made with the insertion loss at 100 MHz.
The following is a calculation example where a solid-wire cable (cable 1) and a stranded-wire cable(cable 2) are used together with a rise in ambient temperature to 60˚C.
Cable 1 insertion loss per 100 m at 100 MHz and 20˚C: ILcable1,20˚C = 22.0 (dB/100 m)
Cable 1 insertion loss temperature coefficient: k cable1 = 0.2 (%)
Cable 2 insertion loss per 100 m at 100 MHz and 20˚C: IL cable2,20˚C = 26.4 (dB/100 m)
Cable 2 insertion loss temperature coefficient: kcable2 = 0.2 (%)
Cable temperature: t = 60 (˚C)
Insertion loss of connector (plug + jack) at 100 MHz: IL conn = 0.4 (dB)
Number of connectors: n = 4
Insertion loss of channel (wiring between devices) at 100 MHz: IL channel (dB)ILchannel = (22.0 × (1 + (60 - 20) × 0.2 / 100)) × Lcable1 / 100 +(26.4 × (1 + (60 - 20) × 0.2 / 100)) × Lcable2 / 100 + 0.4 × 4= 23.76 × Lcable1 / 100 + 28.51 × Lcable2 / 100 + 1.6
Example 1: When the total length of cable 1 is 80 m, and the total length of cable 2 is 3 m
ILchannel = 23.76 × 80 / 100 + 28.51 × 3 / 100 + 1.6 = 21.46 (dB)The value satisfies the specified channel insertion loss value, at 100 MHz of 24 dB. The cable canbe used.
Example 2: When the total length of cable 1 is 50 m, and the total length of cable 2 is 40 m
ILchannel = 23.76 × 50 / 100 + 28.51 × 40 / 100 + 1.6 = 24.88 (dB)The value does not satisfy the specified channel insertion loss value, at 100 MHz of 24 dB. The
cable cannot be used.
Note that the above is only approximate calculation, and the result may not always match the actual
measurement of the channel insertion loss value for various reasons. Set the cable length so that amargin exists with respect to the insertion loss standard. After wiring, it is advisable to measure thevalue using a measuring device such as a field tester under actual operating conditions to check thatthe margin exists.
16

Chapter 5 INSTALLATION AND WIRING
5.1 Wiring Precautions● Wiring run
On the wiring run, use ducts or cable racks as many as possible. When conduit tubes are used, selecta tube diameter considering dimensions of connectors and boots. When pull boxes are installed,
select a box that satisfies the allowable bending radius of the cable. Use the wiring run as a dedicatedrun as much as possible. In addition, build the wiring run that is not infiltrated with liquid, such as
water and oil, and does not reach high or low temperature outside of the specified ambient
temperature range. Select environment-friendly components if the wiring run is to be built in a special
environment within a factory.
Example: Heatproof, oilproof, and movable parts
For details on the environmental resistance of each component, refer to the specifications from eachmanufacturer.
● Minimum bending radius
Check the specifications from each cable manufacturer to keep the minimum bending radius of cables.
A minimum bending radius is the radius within which the characteristics can be ensured over long
periods of time after a cable is installed.
Use of cables below the specified minimum bending radius may decrease transmission performanceor cause a disconnection of cables.
● Allowable tension
Do not apply tension to a cable as much as possible.
Failure to do so may cause a disconnection of connectors and cables, or impair transmission
performance.
Upon installation: If tension is unavoidable, use the cable within the allowable tension range.
(For the allowable tension range, contact the cable manufacturer.)
After installation: Pay attention to the cable length and the installation method so that tension is notapplied to the cable.
● Measures to reduce noise
Install signal lines as far away from power cables as possible to prevent induced noise.
Do not install cables in a control panel where high-voltage devices are installed.
Attach a surge suppressor on devices that tend to generate noise.
● Cable lateral pressure
Do not apply lateral pressure to cables by, for example, tucking excessive cables into cable protective
materials (such as wire protectors and pipes), inserting cables between them, or excessively
tightening cable bundling bands.
Doing so may impair the transmission performance.
● Connector handlingDo not apply external forces, such as lateral pressure and shock, to the connector before it isconnected.
Especially, pins of an RJ45 connector (plug), both the metal part and the plastic resin part, are easily
deformable. A connection through a deformed connector may cause malfunction due to poor contact
or damage to the connection area of the device.
If there is a possibility that external forces are applied to a connector, check the connector for
deformation before using it.
Refer to Appendix A3. "Deformation of Connectors".

17

● Stress on connector connection areas
Do not apply any stress to the connector connection areas.
If stress is applied due to some reasons, such as the weight, bending of the neck part, twisting,swinging, moving, and inattentive pulling of the cable, it may cause damage to the module or theconnector, malfunction due to poor contact, and miscommunications that occurs with age.
Solid-wire cables have a hard conductor, and therefore stress may be applied easily to the connector
connection areas.
Stress may also be applied easily to the connector connection areas when the wiring distance is short.
In such cases, it is preferable to use stranded-wire cables or movable cables that are more flexible
and easy to handle.
● Waterproof performance of the M12 connector
Check the manual of the module used.
● Wiring to movable parts
When wiring cables to a movable part, use a dedicated cable.
Also, observe the following at wiring to prevent cable disconnection in the early stages.
• Check the bending characteristics of the cable, such as the minimum bending radius, with the
manufacturer.
• Do not bend, kink, or twist the cable.
• Do not scratch or damage the cable sheath.
• Minimize the locations where the cable is secured.
• Do not forcibly secure the cable at a location where the cable moves.
• Wire the cable with the optimal length.
● Other precautions
Shut off all the power supply for the connected devices and for communications before connecting
cables.

18

5.2 Grounding Method• Provide independent grounding or shared grounding.
• Ground the FG terminal of each module to the protective ground conductor dedicated to theprogrammable controller. (Ground resistance: 100 Ω or less)
CC-Link IE
Field
Network
deviceAnother
device

CC-Link IE
Field
Network
deviceGroundresistance of
100 Ω or less

Groundresistance of
100 Ω or lessIndependent
grounding

Another
deviceRecommended

SharedgroundingFigure 7

CC-Link IE
Field
Network
deviceAnother
deviceGroundresistance of
100 Ω or less

AllowedCommongroundingFigure 8

Not allowed

Figure 9• Use the thickest cable possible (2 mm2 or more). Bring the grounding point close to the programmablecontroller as much as possible so that the ground cable can be shortened.
5.2.1 Supplementary explanation on grounding(1) Grounding types
The grounding of products (devices) supporting CC-Link IE Field Network can be broadly divided into
the following two types in accordance with their purposes:
1. Protective ground aimed to protect human bodies from electric shock and ground faults
2. Functional ground to ensure communication reliability
The grounding of shield wires of CC-Link IE Field Network cables is functional ground to ensurecommunication reliability.
Protective groundterminal display

Functional groundterminal display(2) Supplementary explanation to the grounding method
Provide independent grounding (Figure 7) for protective ground and functional ground. Or, employ
shared grounding (Figure 8) where cables are connected individually up to the ground point. If common
grounding (Figure 9) is provided, noise may enter the functional ground from the protective ground,making CC-Link IE Field Network communications unstable. Especially, when common grounding is
employed for the protective grounding and functional grounding (shield wire of the CC-Link IE Field
Network cable) of driving devices such as inverters and servos, the possibility of unstablecommunications will increase.

191) For the ground wire for functional ground, use a copper wire whose diameter is 1.6 mm or more or
2 mm2 or more.
(It is advisable to use the thickest copper wire possible (preferably 14 mm2 or more) to thegrounding point and bring the point close to the programmable controller.)
2) Do not install the ground wire of the functional ground together with the protective ground wire or
power cables. (Noise may enter the ground wire, making communications unstable.)
Control panel
CC-Link IE Field
Network device

Other device

CC-Link IE Field
communication area

H

K

Protective groundterminalK

H

CC-Link IE Field
Network device

Other device

CC-Link IE Field
communication area

Functional groundterminal

H

K

H

K

Ground point for functional ground

Ground point for protective ground

H :Protective ground terminal of device
K :Functional ground terminal of device

Figure 10 Example of Independent Grounding20

Control panel

CC-Link IE Field
Network device

Other device

CC-Link IE Field
communication area

H

K

H

Protective groundterminal

K

CC-Link IE Field
Network device

Other device

CC-Link IE Field
communication area

Functional groundterminal

H

Ground
point

K

H

K

H :Protective ground terminal of device
K :Functional ground terminal of device

Figure 11 Example of Shared Grounding

Control panel
CC-Link IE Field
Network device

Other device

CC-Link IE Field
communication area

H

K

H

K

CC-Link IE Field
Network device

Other device

CC-Link IE Field
communication area

Ground terminal

H

Ground
point

K

H

K

H :Protective ground terminal of device
K :Functional ground terminal of device

Figure 12 Example of Common Grounding21

(3) Wiring example of shared grounding
The following figure shows the wiring example of shared grounding.
Use 2 mm2 or more a copper wire forconnection from a CC-Link IE device tobus for functional ground or functional
ground terminal.

Control panel

CC-Link IE Field
Network device

Other device

CC-Link IE Field
communication area

H

K

Protective groundterminal

H

K

CC-Link IE Field
Network device

Other device

CC-Link IE Field
communication area

Functional groundterminal

H

Ground
point

K

H

K

Bus for functional ground(14 mm2 or more recommended)
H :Protective ground terminal of device
K :Functional ground terminal of device

Figure 13 Wiring Example of Shared Grounding

22

APPENDICES
A1. Structure of FA Cable Conductors
The wire type differs depending on the application of a cable.
Accordingly, there are three types of RJ45 connector (plug): for solid wires, stranded wires, and both wires.
Some combinations are not allowed, such as a solid-wire cable and a connector for stranded wires.
Table 5 Cable Types
Wire type

Application

Solid wire

Used for fixed wiring.
Used for fixed wiring. This type of cable has good flexibility, but ashorter communication distance.
Used for movable parts. (Applications differ depending on the
manufacturer specifications.)

Stranded wire (seven wires)
Stranded wire (braided)

The American Wire Gauge (AWG) standard is used for the diameters of wire. Increasing gauge numbers
denote decreasing wire diameters. In Japan, the unit "sq" from the JIS standard may be used as well.
It is important to align the diameter and type of the wire and the external dimensions of the entire cablewith the specifications of a cable applicable to the connector used.

RJ45 connector (plug)
Cross-sectional viewPin for both wires

Pin for stranded wires(The shapes of the pins above are just examples and differ depending on the manufacturers.)

Solid wire

Stranded wire (seven wires)

Stranded wire (braided)

Figure 14 Pin Shape Examples of RJ45 Connector and Wire Types

23

A2. Crimp Height
Crimp height is the height of the part where the RJ45 connector plug pins secure the wire conductor.
Measuring the crimp height is one of the important items to check the connection reliability.
Crimp height: Lower limit 5.89 mm, upper limit 6.15 mm

Crimp height

Figure 15 Crimp Height of RJ45 Connector (Plug)If the crimp height is lower than the specified value, it means that the plug is excessively tightened
and the contact with the pins in a jack will weaken when the connector is inserted into the jack.
If the crimp height is higher than the specified value, it means that the conductor is not fixed enough into theplug, possibly leading to poor electrical continuity, increased contact resistance, or unplugging of the wire
conductor. In addition, the pins in the jack may be deformed when the connector is inserted into the jack.
Always use a dedicated tool specified by the connector manufacturer to achieve the same height.

Figure 16 Uneven Crimp Height Example of RJ45 Connector (Plug) with Crimp-Type Contacts
A3. Deformation of Connectors
Do not apply external forces, such as lateral pressure and shock, to a connector before it is connected
to a module.
A connection through a deformed connector may cause malfunction due to poor contact or damage tothe connection area of the module.
Protecting a connector with a tube, cushion material, or other materials before the connection is usefulas a means of preventing the connector from being damaged by external forces.

Deformed connector

Normal connector

Figure 17 Example of a Deformed RJ45 Connector
24

MEMO

25

Access point:

CC-Link Partner Association
6F Ozone-front Building, 3-15-58, Ozone, Kita-ku, Nagoya 462-0825, JapanTEL:+81-52-919-1588
FAX:+81-52-916-8655
URL:
http://www.cc-link.org/
E-Mail: info@cc-link.org
All rights reserved.

26

CC1006-15-B

Prepared in March, 2019