Twisted Bus System (When Using Cc-Link Ver.1.10-Compatible Cable) - Mitsubishi Electric Melsec QJ71LP21 Reference Manual

4 SETUP AND PROCEDURES BEFORE STARTING THE OPERATION

4.6.4 Twisted bus system (when using CC-Link Ver.1.10-compatible cable)

Terminating
resistor
(110 , 1/2W)
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(1) Wiring precautions
(a) Usage of CC-Link cables
The CC-Link Ver. 1.10-compatible cable cannot be used together with other
CC-Link cables (CC-Link dedicated cable and CC-Link dedicated high-
performance cable)
When used together, normal data communication cannot be expected.
(b) Branching of CC-Link cable
Connect network modules only with CC-Link cables.
Repeater hubs and connectors cannot be used.
(c) Grounding of CC-Link cable
Ground both ends of the shielded wire of the CC-Link Ver. 1.10-compatible
cable to the protective ground conductor by connecting to "SLD" of each
network module via "FG".
The SLD and FG are connected within the module.
(d) Connecting a terminating resistor
For the network module at both ends, connect the DA and DB by a
terminating resister (110 , 1/2W) provided with the module.
(e) Connecting/disconnecting CC-Link Ver. 1.10-compatible cable
Shut off the external power supply for the system in all phases.
(2) Connection of cable
(a) Connection method
Connect a blue, white, and yellow cable to the DA, DB, and (DG)
respectively.
In addition, use terminating resistors for the stations at both ends.
(blue)
DA
(White)
DB
(Yellow)
(DG)
SLD
CC-Link Ver.1.10-
FG
compatible cable
(b) Wiring to spring clamp terminal block
For the wiring method of a cable to a spring clamp terminal block, refer to
Section 4.6.3 (2) (b) in this manual.
(blue) (blue)
DA
(White) (White)
DB
(Yellow)
(Yellow)
(DG)
SLD
CC-Link Ver.1.10-
FG
compatible cable
MELSEC-Q
(blue)
DA
Terminating
resistor
(White)
DB
(110 , 1/2W)
(Yellow)
(DG)
SLD
FG
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