6. Connections of Control Unit
6.8 Connecting with Expansion Unit
66
6.8.3 Connecting I/O Devices via CC-Link
CC-Link unit works as master station or local station of CC-Link (Ver.2 mode).
Expansion unit (FCU7-EX891) and CC-Link unit (FCU7-HN576) are required to connect I/O devices via
CC-Link. Mount the expansion unit on the right side of the control unit, and install the CC-Link unit in the slot
of the expansion unit.
CC-Link uses the dedicated cable. Connect the cable to the terminal block provided with the CC-Link unit.
Make sure to attach the terminator, provided with the CC-Link unit, to the final station unit.
Expansion unit
(FCU7-EX891)
CC-Link unit(FCU7-HN576)
CC-Link network
connector
FG terminal
block
CC-Link
remote I/O station
CC-Link
remote I/O station
CC-Link cable
Terminal
block
DA
DB
DG
SLD
FG
DA
FG
SLD
DG
DB
DA
FG
SLD
DG
DB
FG
Terminator
(Note 2)
Terminator
(Note 2)
Use either
for wiring
(Note 3)
NC side CC-Link
unit terminal block
Remote I/O station
terminal block
Remote I/O station
terminal block
Shielded twisted cable (with 3 wires)
(Note 1)
Shielded twisted cable (with 3 wires)
(Note 1)
FG
FG
FG
FG
(Note 1)
Unless the CC-Link dedicated cable is used, CC-Link system does not guarantee its operation.
For the specifications of the CC-Link dedicated cable and the inquiries, see the homepage of the
CC-Link Partner Association (http://www.cc-link.org/). (Click “Product Information”.)
(Note 2)
Use the terminator provided with the CC-Link unit. The value of the terminator depends on the
cable used: 110
Ω
when the CC-Link dedicated cable is used, 130
Ω
when the CC-Link dedicated
high performance cable is used.
(Note 3)
Use either the FG terminal on the NC side CC-Link terminal block or the FG terminal block just
below the CC-Link terminal block to connect to the ground of the electric cabinet.
