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

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MELSEC-Q
4 SETUP AND PROCEDURES BEFORE STARTING THE OPERATION
4.6.4 Twisted bus system (when using CC-Link Ver.1.10-compatible cable)
(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.
(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.
DA
DB
(DG)
SLD
FG
DA
DB
FG
SLD
DA
DB
FG
SLD
CC-Link Ver.1.10-
compatible cable
(DG)
(DG)
Terminating
resistor
(110 , 1/2W)
Terminating
resistor
(110 , 1/2W)
(blue)
(White)
(Yellow)
(blue)
(White)
(Yellow)
(blue)
(White)
(Yellow)
(blue)
(White)
(Yellow)
CC-Link Ver.1.10-
compatible cable