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Programmable Controllers MELSEC
CC-Link IE Specifications

CC-Link IE Field Network performance specifications

Item MELSEC iQ-R Series
R04ENCPU
R08ENCPU
R16ENCPU
R32ENCPU
R120ENCPU
RJ71EN71
MELSEC iQ-R Series
master/local
module
RJ71GF11-T2
MELSEC-Q Series
master/local
module
QJ71GF11-T2
MELSEC-L Series
master/local
module
LJ71GF11-T2
Network interface
board
Q80BD-J71GF11-T2,
Q81BD-J71GF11-T2
Communication speed 1 Gbps
Maximum stations per network 121 stations (1 master station. 120 device stations)
Connection cable Ethernet cable (Category 5e or higher, double shielded/STP), straight cable
Overall cable distance

Line type: 12,000 m (When 1 master station and 120 device stations are connected)
Star type: Depends on system configuration*1
Ring type: 12,100 m (When 1 master station and 120 device stations are connected)

Maximum station-to-station distance 100 m
Maximum number of networks 239
Network topology Line type, star type*2, ring type
Communication method Token-pass
Maximum link points per network*3
RX 16384 points, 2KB
RY 16384 points, 2KB
RWr 8192 points, 16KB
RWw 8192 points, 16KB
Maximum link points per station*3
Master station RX 16384 points, 2KB
RY 16384 points, 2KB
RWr 8192 points, 16KB
RWw 8192 points, 16KB
Local station*4 RX 2048 points, 256B
RY 2048 points, 256B
RWr 1024 points, 2048B 256 points, 512B
RWw 1024 points, 2048B 256 points, 512B
Intelligent device station RX 2048 points, 256B
RY 2048 points, 256B
RWr 1024 points, 2048B 256 points, 512B
RWw 1024 points, 2048B 256 points, 512B
Remote device station RX 128 points, 16B
RY 128 points, 16B
RWr 64 points, 128B
RWw 64 points, 128B
Safety communications
Maximum number of safety connections per network - 1814 connections -
Maximum number of safety connections per station - 120 connections -
Maximum number of link points per safety connection - 8 words
(input: 8 words
output: 8 words)
-
Transient transmission capacity
Transient transmission capacity 1920B maximum
Item MELSEC iQ-R Series
simple motion module
RD77GF4
RD77GF8
RD77GF16
RD77GF32
MELSEC-Q Series
simple motion module
QD77GF4
QD77GF8
QD77GF16
Communication speed 1 Gbps
Maximum stations per network 121 stations (1 master station. 120 device stations)
Connection cable Ethernet cable (Category 5e or higher, double shielded/STP), straight cable
Overall cable distance

Line type: 12,000 m (When 1 master station and 120 device stations are connected)
Star type: Depends on system configuration*1

Maximum station-to-station distance 100 m
Maximum number of networks 239
Network topology Line type, star type*2
Communication method Token-pass
Maximum link points per network*3
RX 16384 points, 2KB 8192 points, 1KB
RY 16384 points, 2KB 8192 points, 1KB
RWr 8192 points, 16KB 1024 points, 2KB
RWw 8192 points, 16KB 1024 points, 2KB
Maximum link points per station*3
Master station RX 16384 points, 2KB 8192 points, 1KB
RY 16384 points, 2KB 8192 points, 1KB
RWr 8192 points, 16KB 1024 points, 2KB
RWw 8192 points, 16KB 1024 points, 2KB
Local station*4 RX 2048 points, 256B -
RY 2048 points, 256B -
RWr 256 points, 512B -
RWw 256 points, 512B -
Intelligent device station RX 2048 points, 256B
RY 2048 points, 256B
RWr 256 points, 512B 1024 points, 2048B
RWw 256 points, 512B 1024 points, 2048B
Remote device station RX 128 points, 16B
RY 128 points, 16B
RWr 64 points, 128B
RWw 64 points, 128B
Safety communications
Maximum number of safety connections per network -
Maximum number of safety connections per station -
Maximum number of link points per safety connection -
Transient transmission capacity
Transient transmission capacity 1920B maximum
  • *1.An Ethernet switch is required for a star connection. Up to 20 Ethernet switches can be connected.
  • *2.Line and star types can also be mixed.
  • *3.Remote input RX: Bit data input from a device station to the master station
    Remote output RY: Bit data output from the master station to a device station
    Remote register RWr: 16-bit (word) unit data output from the master station to a device station
    Remote register RWw: 16-bit (word) unit data output from the master station to a device station
    May partially differ for local stations.
  • *4.Number of link points allocated by the master station. A local station can also use other link points to receive data from other stations.

For further details, please refer to the relevant product manuals.

CC-Link IE Controller Network performance specifications

Item MELSEC iQ-R Series
R04ENCPU
R08ENCPU
R16ENCPU
R32ENCPU
R120ENCPU
RJ71EN71
MELSEC iQ-R Series
RJ71GP21-SX
MELSEC-Q Series
QJ71GP21-SX
QJ71GP21S-SX
Network interface board
Q80BD-J71GP21-SX
Q80BD-J71GP21S-SX
Q81BD-J71GP21-SX
Q81BD-J71GP21S-SX
Communication speed 1 Gbps
Maximum stations per network 120 (1 control station, 119 normal stations)*5
Connection cable Ethernet cable
(Category 5e or higher,
double shielded/STP),
straight cable
Multi-mode optical cable
Laser class
(JIS C 6802, IEC 60825-1)
- Class 1 laser product
Overall cable distance

Line type: 11,900 m*6
Star type: Depends on
system configuration
Ring type: 12,000 m*6

66,000 m*6
Maximum station-to-station distance 100 m 550 m
Maximum number of networks 239
Maximum number of groups 32
Network topology Line type, star type*7,
ring type
Duplex loop ring
Communication method Token-pass Token-ring
Maximum link points per network*8
LB 32768 points, 4KB 32768 points, 4KB
For extended points:
65536 points, 8KB
32768 points, 4KB*9 32768 points, 4KB
LW 131072 points, 256KB 131072 points, 256KB
For extended points:
262144 points, 512KB
131072 points, 256KB*10 131072 points, 256KB
LX 8192 points, 1KB
LY 8192 points, 1KB
Communication speed*8 (Regular mode)
LB 16384 points, 2KB
LW 16384 points, 32KB
LX 8192 points, 1KB
LY 8192 points, 1KB
Communication speed*8 (Extended mode*11)
LB 32768 points, 4KB
LW 131072 points, 256KB
LX 8192 points, 1KB
LY 8192 points, 1KB
Transient transmission capacity
Transient transmission capacity 1920B maximum
  • *5.Under CC-Link IE Controller Network, the number of connectable normal stations per network differs by the CPU module used in the control station.
    For the details, please refer to the manual of the module used in the control station.
  • *6.When 120 stations are connected.
  • *7.Line and star types can also be mixed.
  • *8.Link relay LB: Bit data transmitted from stations in the network
    Link register LW: 16-bit (word) unit data transmitted from stations in the network
    Link input LX: Data input from a station to the I/O master in the same block
    Link output LY: Data output from the I/O master station to another station in the same block
  • *9.16384 points and 2K bytes for the basic model QCPU and the MELSEC-QS Series Safety CPU.
  • *10.16384 points and 32K bytes for the basic model QCPU and the MELSEC-QS Series Safety CPU.
  • *11.To use the extended mode, all the stations must be compatible with the extended mode.

For further details, please refer to the relevant product manuals.

CC-Link IE Field Network Basic performance specifications

Item Programmable controller CPU module Network module MELIPC
R□CPU
R□ENCPU
Q□UDVCPU L□CPU FX5U
FX5UC
FX5UJ FX5-ENET MI5122-VW
Communication speed 100 Mbps
Maximum stations per network*12 64 stations
(16 stations × 4 groups)
16 stations 16 stations*13 8 stations 32 stations
(16 stations
× 2 groups)
64 stations
(16 stations
× 4 groups)
Connection cable Ethernet standard compatible cable, Category 5e or higher (STP cable)
Maximum station-to-station distance 100 m (between a hub and node)*14
Network topology Line type, Star type*15
Communication method UDP
Maximum link points per network*16
RX 4096 points 1024 points 1024 points*13 512 points 2048 points 4096 points
RY 4096 points 1024 points 1024 points*13 512 points 2048 points 4096 points
RWr 2048 points 512 points 512 points*13 256 points 1024 points 2048 points
RWw 2048 points 512 points 512 points*13 256 points 1024 points 2048 points
Maximum link points per station*16
Master station RX 4096 points 1024 points 1024 points*13 512 points 2048 points 4096 points
RY 4096 points 1024 points 1024 points*13 512 points 2048 points 4096 points
RWr 2048 points 512 points 512 points*13 256 points 1024 points 2048 points
RWw 2048 points 512 points 512 points*13 256 points 1024 points 2048 points
Remote station*17 RX 64 points; up to 256 points can be allocated according to the number of stations
RY 64 points; up to 256 points can be allocated according to the number of stations
RWr 32 points; up to 128 points can be allocated according to the number of stations
RWw 32 points; up to 128 points can be allocated according to the number of stations
  • *12.Maximum number of remote stations controlled by the master station, depending on the number of allocated remote stations. The total number of allocated stations should not exceed the maximum number of remote stations.
  • *13.Supported in the CPU module firmware version of “1.110” or later.
  • *14.The maximum distance between stations depends on the actual hub used. Please refer to the hub manufacturer's specifications.
  • *15.Line topology and star topology can be mixed.
  • *16.Remote input RX: Bit data input from a remote station to the master station
    Remote output RY: Bit data output from the master station to a remote station
    Remote register RWr: 16-bit (word) unit data output from the master station to a remote station
    Remote register RWw: 16-bit (word) unit data output from the master station to a remote station
  • *17.Number of link points allocated by the master station.

For detailed information about performance specifications, please refer to the “CC-Link IE Field Network Basic Reference Manual (SH(NA)-081684ENG)”.

Network specifications comparison

Control level

Item CC-Link IE Controller Network MELSECNET/H
Optical duplex loop Twisted pair Optical loop method Coaxial bus method Twisted bus method
Communication speed (bps) 1 G 25 M 10 M 10 M (max.)
Maximum stations per network 120*18 65 33 32
Maximum link points
Per network 128K*19 16K*19
Per station 128K*19 16K*19
Distance
Overall (km) 66 12*20 30 2.5*21 0.1 (10 Mbps)
Station-to-station (m) 550 100 1000 500 100 (10 Mbps)
Communication
Network topology Duplex loop ring Star type, line type,
ring type
Duplex loop ring Bus type Bus type
Connection cable Ethernet cable
(Multi-mode
optical fiber)
Ethernet cable
(Category 5e or
higher, double
shielded/STP)
Optical cable Coaxial cable Twisted pair cable

Field level

Item CC-Link IE Field Network CC-Link IE Field Network Basic CC-Link
Communication speed (bps) 1 G 100 M 10 M (max.)
Maximum stations per network 121 65*22 65*22
Maximum link points
Per network 16K*23 4K*23 4K*23
Per station 2K*23 256*23
(When 4 stations are occupied)
256*23
(When 4 stations are occupied)
Distance
Overall (km) 12.1*20 Depends on system configuration 1.1*21 (10 Mbps)
Station-to-station (m) 100 100 100 (10 Mbps)
Communication
Network topology Star type, line type, ring type Star type Bus type, T-branch type, star type
Connection cable Ethernet cable
(Category 5e or higher,
double shielded/STP)
Ethernet cable
(Satisfies 100BASE-TX)
Twisted pair cable
(CC-Link dedicated cable)
  • *18.Value when the extended mode is used.
  • *19.Value of link register LW (word).
  • *20.Value when ring connection is used.
  • *21.Value when a repeater is used.
  • *22.The maximum stations per network differ according to programmable controller Series.
  • *23.Value of remote register RWr + RWw (word).

Cable specifications

CC-Link IE compatible twisted-pair cable*24

Item Specifications
Twisted-pair cable specifications   Category 5e or higher, (double shielded/STP) straight cable
Standard Cables that conform to the following standards.
· IEEE802.3 (1000BASE-T)
· ANSI/TIA/EIA-568-B (Category 5e)
Connector specifications Standard RJ-45 connector with shield

CC-Link IE compatible optical cable*24

Item Specifications
Optical cable specifications   1000BASE-SX (MMF) optical cable
Standard IEC 60793-2-10 Types A1a.1 (50/125 µm multimode)
Transmission loss (max.) ≤ 3.5 dB/km (λ = 850 nm)
Transmission band (min.) ≥ 500 MHz·km (λ = 850 nm)
Connector specifications   Duplex LC connector
Standard IEC 61754-20: Type LC connector
Connection loss ≤ 0.3 dB
Polished face PC (Physical Contact) polishing
  • *24.For recommended cables and other information, contact the CC-Link Partner Association.

CC-Link IE Field Network Basic compatible twisted-pair cable

Item Specifications
Twisted-pair specifications   Category 5e or higher, (STP) straight cable
Category 5 or 5e, (STP) cross cable
Standard Cables that satisfy following standards
· IEEE802.3 (100BASE-TX)
· ANSI/TIA/EIA-568-B (Category 5)
Connector specifications Standard RJ45

Network topologies*25

  • *25.CC-Link IE Field Network Basic supports star topology only.

Line topology (Twisted-pair cable)

Star topology (Twisted-pair cable)

Ring topology (Twisted-pair cable)

Ring topology (Dual-loop optical fiber)

Cyclic transmission

In cyclic transmission, data is transmitted periodically using link devices. Under CC-Link IE Field and Controller networks, some differences exist as described in this section.

CC-Link IE Field Network*26

One-to-one communication is possible between the master and device stations. The status of link devices (RY, RWw) within the master station are transmitted to an external device connected to a device station. Likewise, the status of external devices is transmitted to the master station link devices (RX, RWr) via the device station.
In the case of local stations, the status of the master station link devices (RY, RWw) is relayed to all local station link devices (RX, RWr) on the network. When an input from a device or local station is executed, the device station link devices (RX, RWr) status and local station link devices (RY, RWw) status are stored in the master station link device (RX, RWr), along with other local station link devices (RY, RWw). As a result, all local stations possess the data of other device stations, similar to the master station.

  • *26.The data is transmitted in the same method on CC-Link IE Field Network Basic. Note that communication is made between the master station and the device stations only. No local stations are available on the CC-Link IE Field Basic.

Output from the master station

  1. In the master station, devices of the CPU module turn ON.
  2. In the master station, the status of the CPU module devices are stored in the link devices (RY, RWw) by link refresh.
  3. The status of the master station link devices (RY, RWw) are then stored in the device station link devices (RY, RWw), and in the local station link devices (RX, RWr) by link scan.
  4. The status of the local station link devices (RX, RWr) are stored in the CPU module devices.

Input from the device or local station

  1. In the local station, devices of the CPU module turn ON.
  2. In the local station, the status of the CPU module devices are stored in its own station link devices (RY, RWw) transmission area.
  3. The status of the device station link devices (RX, RWr), and the local station link devices (RY, RWw) are stored in the master station link devices (RX, RWr) by link scan.
  4. The status of the master station link devices (RX, RWr) are stored in the CPU module devices by link refresh.

CC-Link IE Controller Network

Communications using link relays (LB) and link registers (LW)

This function allows each station to write data to its own send range of a link device (LB, LW) to send them to all other stations on the network. The status data of the control station link devices (LB, LW) are stored in the link devices (LB, LW) of each normal station. Likewise, the status of the normal station link devices (LB, LW) is stored in link devices (LB, LW) of the control and other normal stations.

  1. In the transmitting station, the CPU module devices turn ON.
  2. In the transmitting station, the CPU module devices status are stored in the link devices (LB, LW) of the CC-Link IE Controller Network supporting module by link refresh.
  3. The status of the link devices (LB, LW) in the transmitting station are sent to the link devices (LB, LW) of the CC-Link IE Controller Network supporting module in the receiving station by link scan.
  4. In the receiving station, the status of the link devices (LB, LW) are stored in the CPU module devices.

Transmissions using link inputs (LX) and link outputs (LY)

An I/O master station, which controls link inputs (LX) and link outputs (LY), and another station make one to one communication. LX is the input data transmitted between stations in a block, and LY is the output data transmitted from the I/O master station in a block. The control or normal station can be an I/O master station, and up to two I/O master stations (block 1 and block 2) can be used per network.

Transient transmission

This function allows communications with other stations when a request is made by a method such as a dedicated instruction and engineering software. Communications with different networks is also possible.