Mounting And Installation; Communication Wiring - SMC Networks EX140-SMJ1 Series Operation Manual

Mounting and Installation

■Communication wiring

The connection between a CC-Link-dedicated cable and an SI unit communication terminal for CC-Link is
shown below.
The hole diameter for the screwdriver entry to access the terminal screw is 6 mm. (The terminal screw is an
M3 cross head screw.)
(1) Be sure to connect each signal line to its dedicated terminal. (Refer to Fig. 1)
The applicable size of the cross head screwdriver is No.2 (6 mm or less).
Tighten the screws securely with a torque of 0.5 to 0.6 Nm.
(2) Be sure to connect a terminating resistor between "DA" and "DB" at both ends of the CC-Link system.
(Refer to Fig. 2) Use a CC-Link dedicated cable, or a cable with the same specifications. If a cable with
any other specifications is used, normal data transmission cannot be guaranteed.
(3) The appropriate terminating resistor varies depending on the CC-Link cable used.
(Refer to the table and Fig. 3 below)
Cable type
CC-Link dedicated cable
CC-Link dedicated cable compatible to Ver.1.10
CC-Link dedicated high performance cable
Fig. 1
Terminating resistor
110  1/2 W (Brown, Brown, Brown)
130  1/2 W (Brown, Orange, Brown)
Fig. 3
-8-
Fig. 2
No.EX##-OME0011-G