CC-Link Industrial Networks

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CC-Link
Protocol Information
Type of Network Open Field Network,
Physical Media Twisted pair, fiber
Network Topology Bus
Device Addressing DIP Switch or hardware/software
Governing Body CLPA Europe
Website www.clpa-europe.com

CC-Link is an open industrial network that enables devices from numerous manufacturers to communicate. It is predominantly used in machine, cell or process control applications in manufacturing and production industries, but can also be used in facilities management, process control and building automation.

History[edit]

CC-Link is an open-architecture network that was originally developed by the Mitsubishi Electric Corporation in 1997. In 2000 CC-Link was released as an “Open” network so that independent automation equipment manufacturers could incorporate CC-Link compatibility into their products. In the same year the non profit organization CLPA (CC-Link Partner Association) was formed to manage and oversee the network technology and support manufacturer members. More than 1200 CC-Link compatible products from hundreds of automation manufacturers are now available. CC-Link is available in multiple different formats. CC-Link, CC-Link LT, CC-Link Safety, CC-Link IE (Industrial Ethernet) - Control and CC-Link IE Field. Compatible products include industrial PCs, PLCs, robots, servos, drives, valve manifolds, digital & analogue I/O modules, temperature controllers, mass flow controllers. There are now over 9 million installed CC-Link nodes worldwide.

Standardization[edit]

  • CC-Link has been approved as IEC 61158 and 61784 Standard for Fieldbus Networks
  • CC-Link has been approved by ISO (International Organization for Standardization) as 15745-5 International Automation Systems and Integration Standard
  • CC-Link is a recognized international standard for sensor/actuator networks (SEMI E54.12) by the Semiconductor Equipment Manufacturers Institute
  • CC-Link is approved as a China National Standard number GB/T 19760-2008 Control and Information Communication Field Network CC-Link Standard and GB/T 20099.4-2006 Chinese Building Automation Standard
  • CC-Link is an approved Korean National Standard KSBISO15745-5
  • CC-Link is an approved Taiwan National Standard CNS 15252X6068

Technical overview of CLPA Family of Industrial Automation networks[edit]

CC-Link:

  • 10 Mbit/s network transmission
  • Based on RS485 with networks up to 1.2 km, or extended to 13.2 km with repeaters
  • 64 stations per network
  • Refresh time of <3.9mSecs for 65 I/O stations (distance dependent)
  • Master/Slave network with Floating Masters and hot swap of stations

CC-Link Safety:

  • 10 Mbit/s network transmission
  • Based on CC-Link
  • Can combine Safety devices with standard devices on the same network
  • Compliance with IEC 61508 SIL3 and ISO13849-1 Category 4

CC-Link LT:

  • 2.5 Mbit/s network transmission
  • Trunk length up to 500m + 200m drop length
  • 64 stations per network
  • Refresh time of 1.2mSecs for 65 I/O stations (distance dependent)

CC-Link IE Control:

  • Dual redundant 1 Gbit/s fibre-optic Ethernet based network
  • 120 stations per network
  • 550 meters between stations
  • Completely deterministic

CC-Link IE Field:

  • 1 Gbit/s Ethernet based network
  • Ethernet physical layer (Cat5e cable & RJ45 connectors)
  • 254 stations per network
  • 100 meters between stations
  • Completely deterministic without using switches

Data Transmission[edit]

Master Frame Transmission Format
Standard Master Frame (Maximum 930 bytes)

F F F A
1
A
2
8 7 1 8
7
2
DATA (MAX 918 bytes) C R C F F F

Master Transmission (Maximum size with Transient Message)

F F F A
1
A
2
ST 1 ST2 RY
(MAX 256 bytes)
RWw
(MAX 512 bytes)
Message
(MAX 150 bytes)
CRC F F F

Master Transmission (Maximum size without Transient Message)

F F F A
1
A
2
ST 1 ST2 RY
(MAX 256 bytes)
RWw
(MAX 512 bytes)
CRC F F F

Slave Frame Transmission Format
Standard Slave Frame

F F F A
1
A
2
ST 1 ST2 DATA CRC F F F

Slave Transmission (Maximum data with Transient Message)

F F F A
1
A
2
ST 1 ST2 RY
(MAX 16 bytes)
RWw
(MAX 32 bytes)
Message
(MAX 34 bytes)
CRC F F F

Slave Transmission (Maximum data without Transient Message)

F F F A
1
A
2
ST 1 ST2 RY
(MAX 16 bytes)
RWw
(MAX 32 bytes)
CRC F F F

Conformance Testing[edit]

All certification testing for CC-Link is carried out by the CLPA. Even though certification is not compulsory, CLPA certification ensures that devices manufactured by suppliers meet the strict technical conformance of CC-Link, including EMI and reaction times. To declare product as CC-Link compatible a vendor needs to send their product to one of the CLPA test lababoratories situated in the USA, China, Korea, Japan and Germany for certification testing.

See also[edit]


External links[edit]