第二部分CC-Link 的工作原理

CC-Link 的物理结构 公共数据区域的概念 数据映射表 循环数据的传送 瞬时数据的传送 数据传送时间分析

(Reliability, Availability, Serviceability)

Complete RAS Function

Feature of CC-Link

Stand-byMaster Auto-restore

commu- nication

On-LineExchange

Diagno-stics

MonitoringFunction

I do not want toReset Masterafter faultystation goesback working.

I want toavoid systembreak down

I want to monitorstatus ofcommunicationat Master station.

I want to checkwiring, H/Wand so on.

I hate that onefaulty stationinfluence theothers

Reliablesystem can be

realized byCC-Link

Master station

SB0080SW0080 ～ 0083

Easy

Configuration

Software

Stand By Master station(Local Station)

Optical repeater （ max.7.6km)

Repeater(T-branch)

Wireless Repeater (Infrared ray)

Rotary Joint （ 10Mbps)

Local Station

Control by a master board for PC is available, too

Control by a master board for PC is available, too

（ＣＣ－Ｌｉｎｋ）

Many kinds of Partners Products

CC-Link Network System

Master StationThis controls all slave stations connected to CC-Link network.

One master station is needed for a CC-link system.

Local StationThis is the slave station that enables N:N cyclic communication with Master and / or other Local and transient communication.

Remote I/O StationOnly Input / Output (bit data) can be handled by this station.

Remote Device StationInput / Output (bit data) and numerical data

(word data) can be exchanged by this station.

Intelligent Device StationThis station can perform data exchange, such as Input /

Output (bit data) and numerical data (word data).And transient communication is also available

DownDownNetwork Network ControlControl

for SI, GI fiber cable

up to 2.5Mbps 、0 ～ 100m

full range of communication speed supported

From 3rd party

Communication Communication Speed & Total Speed & Total

Length of CC-Link Length of CC-Link CableCable

1010Mbps: 100m (4.3Km with Optical repeater)Mbps: 100m (4.3Km with Optical repeater)

5Mbps: 160m (4.48Km with Optical repeater)5Mbps: 160m (4.48Km with Optical repeater)

2.5Mbps: 400m (5.2Km with Optical repeater)2.5Mbps: 400m (5.2Km with Optical repeater)

625Kbps: 900m (6.7Km with Optical repeater)625Kbps: 900m (6.7Km with Optical repeater)

156kbps:1,200m (7.6Km with Optical repeater)156kbps:1,200m (7.6Km with Optical repeater)

64 64 stations stations (without any repeater)(without any repeater)Number of

connectable stations

ItemItem SpecificationsSpecifications

Specifications of CC-Link

Data size of Data size of TransientTransient

960 960 bytes bytes (150 bytes / packet: Master =>Slave)(150 bytes / packet: Master =>Slave) (34 bytes / packet: Slave => Master)(34 bytes / packet: Slave => Master)

Link Scan TimeLink Scan Time 3.4 3.4 ms (Remote I/O :64 stations)ms (Remote I/O :64 stations)

Data size of Data size of CyclicCyclic 24 24 bytes / 1 stationbytes / 1 station

HMI

RobotController

RobotRemote I/O

Bit

Bit

Bit

Word

Bit

Word

BitRx/y

BitRx/y

Bit

Word

Rx/yRw

Bit

Word

Rx/yRw

Rx/y

Rw

Rw

Master

Bit

Word

Bit

Word

Rx/yRw Rw

Cyclic Communication

Master Local

InverterSensorValve

Feature of CC-LinkFeature of CC-Link

Analog I/O

Remote I/O:2,048bit Remote Register ： 512word

Rx/y

Rx/y

Rx/y

Rx/y

RobotController

Message

MessageMessage

150 byte / 1 Scan=>

<=34 byte / 1 Scan

Feature of CC-LinkFeature of CC-LinkTransient Communication (Max.960 bytes)

Master

Local HMI

RobotDigital I/O

Bit

Bit

Bit

Word

Bit

Word

BitRx/y

BitRx/y

Bit

WordRx/yRw

Bit

WordRx/yRw

Rx/y

Rx/y

Rx/y

Rw

Rx/y

Rw

Master

Bit

Word

Bit

WordRx/yRw

Rx/y

Rw

InverterSensorValve

Analog I/O

Remote I/O:2,048bit Remote Register ： 512word

Inter-Controller Network

De-central Control system can be realized by using N:N communication between controllers with cyclic communication.

RY,RWwRY,RWw

RX,RWrRX,RWr

RX,RWrRX,RWr

RY,RWwRY,RWw

Feature of CC-LinkFeature of CC-Link

Master LocalIntelligent

Device

Analog I/OInverterSensor

Valve

RX,RWrRX,RWr

RY,RWwRY,RWw

Rough value of CC-Link Scan Time　　　 (In case cyclic communication is used under 10Mbps communication speed)

0

1

2

3

4

5

6

0 20 40 60Number of stations

Link

Sca

n T

ime[

ｍS

]

Only Remote I/O connected

4ms/64 Stations (2048bits Communication speed / 10Mbps)

Link Scan TimeLink Scan Time

Feature of CC-Link

Only Remote Device connected (Each one station occupied)Only Local / Intelligent Device connected (Each one station occupied)

Communication method : Protocol (Broadcast-Polling)Communication method : Protocol (Broadcast-Polling)Master Slave 1 Slave 2 ………… Slave n

(1)Polling to slave 1+ Sending data (refresh data) to all slave stations

(1)' Response (refresh data) from slave 1(Receivable at all stations)

(2) Polling to slave 2

(2)' Response (refresh data) from slave 2(Receivable at all stations)

(n)' Response (refresh data) from slave n(Receivable at all stations)

(3) Polling to slave 3

(1)Polling to slave 1+ Sending data (refresh data) to all slave stations

(1)' Response (refresh data) from slave 1(Receivable at all stations)

(2) Polling to slave 2

(2)' Response (refresh data) from slave 2(Receivable at all stations)

(n)' Response (refresh data) from slave n(Receivable at all stations)

(3) Polling to slave 3

Feature of CC-Feature of CC-LinkLink

Communication LSI (MFP)Communication LSI (MFP)

Since MFP (Mitsubishi Field network Processor) carries out communication process between master and slave stations, high speed and stable communication is realized.

Feature of CC-Feature of CC-LinkLink

RAM

S/W

(ROM)

Dual-Port

RAM

Bus I/F

CPU

CPU

RAM

S/W (Driver)

5)

Host Controller Side CC-Link Interface Side

80MHz

Oscillator

Monitoring Timer

Clock Divider circuit

HDLC

DPLL

Bus

con

trol

Station No. Switch Baud rate setting switch

Medium interface (RS485)

DMAC

I/O port (Register)

Error detecting

circuit

shutdown

Communication control

Receive buffer

Send buffer

EEPROM

MFP1

Frame Format

ＦＦ Ａ１Ａ１

Ａ２Ａ２

ＳＴＳＴ

１１ ＳＴＳＴ

２２ＦＦ ＦＦ ＣＲＣＲ

ＣＣ ＦＦ ＦＦ ＦＦDATADATA （（ Max.918byteMax.918byte

））

ＦＦ Ａ１Ａ１

Ａ２Ａ２

ＳＴＳＴ

１１ ＳＴＳＴ

２２ＦＦ ＦＦ ＣＲＣＲ

ＣＣ ＦＦ ＦＦ ＦＦRYRY

(Max.256byte)(Max.256byte)

RWwRWw

(Max.512byte)(Max.512byte)

ＦＦ Ａ１Ａ１

Ａ２Ａ２

ＳＴＳＴ

１１ ＳＴＳＴ

２２ＦＦ ＦＦ ＣＲＣＲ

ＣＣ ＦＦ ＦＦ ＦＦRXRX

(Max.16byte)(Max.16byte)

RWrRWr

(Max.32byte)(Max.32byte)

ＣＲＣＲ

ＣＣ ＦＦ ＦＦ ＦＦMessageMessage

(Max.150byte)(Max.150byte)

ＣＲＣＲ

ＣＣ ＦＦ ＦＦ ＦＦMessageMessage

(Max.34byte)(Max.34byte)

(1) (1) Standard Frame (Max.930byte)Standard Frame (Max.930byte)

(2) (2) Polling + Refresh data (Master => Local / Intelligent device station)Polling + Refresh data (Master => Local / Intelligent device station)

(3) (3) Response (refresh data) from slave (Local / Intelligent device => Master, Local => Local)Response (refresh data) from slave (Local / Intelligent device => Master, Local => Local)

Data rate in frame is 98% in maximum =>Data rate in frame is 98% in maximum => Efficient Data transfer Efficient Data transfer

Feature of CC-Feature of CC-LinkLink

远程终端的形式远程 描述 典型单元 数据形式主站 网络的主站控制单元

主站一定是一个程控器每个网络只有一个主站

PLC RX, RY

RWr, RWw

Message

远程 I /O 处理 ON-OFF 数据每个网络可以有 64个远程 I / O

Digital I/O

Pnumatic valve

RX, RY

远程设备 处理 ON-OFF 数据+字数据每个网络可以有 42个远程设备

Analog I/O

Temp. controller

RX, RY

RWr, RWw

智能设备 处理 ON-OFF 数据+字数据+信息数据每个网络可以有 26个智能设备

RS232C I/F

Local 这是主站边上的另一个 PLC

Local PLC是一种智能设备PLC

备用主站 这是一种智能设备，也是一种 Local PLC；当主站工作时，它是一个 Local PLC ；当主站出现故障时，它作为主站工作；每个网络只有 1个备用主站。

PLC

RX, RY

RWr, RWw

Message

数据形式设备 名称 描述 大小/站 大小/网络 适用的远程终端RX 远程输入 输入主站/local PLC 的位数据 32 bits 2048 bits 远程I/O

远程设备智能设备主站/Local PLC

RY 远程输出 从主站/local PLC输出的位数据 32 bits 2048 bits 远程I/O

远程设备智能设备主站/Local PLC

RWr 远程寄存器（读）

输入主站/local PLC 的字数据 4 words 256 words 远程设备智能设备主站/Local PLC

RWw 远程寄存器（写）

从主站/local PLC输出的字数据 4 words 256 words 远程设备智能设备主站/Local PLC

Message 非刷新数据。用于传送大容量的数据

智能设备主站/Local PLC

Max. logical remote devices : RX:2048 bits + RY: 2048 bits + RWr:256 words + RWw: 256 words = 768 words

远程设备 /数据形式的关系

数据形式RX RY RWr RWw Message

主站 Yes Yes Yes Yes Yes

远程 I/P Yes Yes X X X

远程设备 Yes Yes Yes Yes X

智能设备 Yes Yes Yes Yes Yes

Local Yes Yes Yes Yes Yes

远程设备的形式

备用主站 Yes Yes Yes Yes Yes

传送方法•循环数据的刷新

–刷新设备 : RX, RY, RWr, RWw–刷新范围取决于远程终端的数量和型号–刷新所有连接的站点–刷新操作无需梯形图编程 .

注：网络模块与 CPU 之间的刷新需要编程。

传送方法•信息传送

–无循环数据传送–对于主站 /就地站 /智能远程设备有效–需要在程序中添加 CC-Link命令(只对 AnSH, QnA, QnAS有效 )

–也通过 G4单元进行程序转换

循环的数据刷新RX

RY

RWr

RWw

RX

RY

RWr

RWw

RX

RY

RWr

RWw

RX

RY

RWr

RWw

主站远程 I/O ，设备，智能站 就地站 就地站

Data source Original data destination

诊断设备• SB, SW : 诊断继电器 /寄存器• 监控网络的状态和错误

SB0 to 3F位设备

CPU 设备内存 主站 /就地站的缓冲寄存器FROM/TO自动刷新参数

注； QnACPU 的 SB/SW 不能被用作 CC-Link SB/SW 的刷新区 应使用其它 CPU 设备

字设备

SB40 to 1FF

SW0 to 3F

SW40 to 1FF

内存图网络参数

RX

RY

RWr

RWw

SB

SW

自由使用的内存

远程输入区由远程 I/O ，设备，智能站以及 PLC 就地站刷新。

网络参数区由梯形图程序或 QnA 的自动刷新参数设定。只有 PLC 主站需要。

由远程输出区刷新远程 I/O ，设备，智能站和 PLC 就地站。

远程寄存器输入区由远程设备，智能站以及 PLC 就地站刷新。

由远程寄存器输出区刷新远程设备，智能站和 PLC 就地站。

CC-Link 诊断继电器

CC-Link 诊断继电器

Auxiliary memory maybe accessed from other master/local PLC by RIRD or RIWT commands

主站 /就地站模块的内存图

循环的数据刷新RX

RY

RWr

RWw

RX

RY

RWr

RWw

RX

RY

RWr

RWw

RX

RY

RWr

RWw

主站远程 I/O ，设备，智能站 就地站 就地站

Data source Original data destination

Copied data Not available

怎样访问内存

网络参数

RX

RY

RWr

RWw

SB

SW

Random accessbuffer

主站 /就地站模块的内存图

自动刷新参数

QnA/QnAS

TO

AnN/AnA/AnU/AnS

FROM/TO

FROM/TO

RLPA or TO(Note 1)

AnSH

RRPAor

FROM/TO

(Note 1)

FROM/TOFROM/TO

Note 1: 建议使用 FROM/TO

时间表Active主站

From Master输往远程终端的数据 From Stand-by master

SB70 @ 备用主站 (by system)

SB1 @ 备用主站 (by ladder)

SB43 @ 备用主站 (by system)

Local备用主站状态 Refresh data keeper Master

*1

*1 : 远程单元维持最后的状态。

T

开关时间

波特率 (bps) 开关时间(ms)

10M 大约 4 to 25

5M 大约 6 to 30

2.5M 大约 8 to 40

625k 大约 20 to 100

156k 大约 70 to 340

开关时间因波特率以及 slave 单元数 (远程站和就地站 )的不同而不同 .