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MELSEC-Q
6 PRE-OPERATIONAL PROCEDURES AND SETTING
6.4 Connection to Ethernet
This section explains how to connect the QJ71MT91 to the 100BASE-TX or 10BASE-T
network.
(1) Connection precautions
The following are the precautions for connection of the QJ71MT91.
Handle the QJ71MT91 correctly, paying full attention to safety.
!
CAUTION
•
Sufficient safety measures must be taken for 100BASE-TX or 10BASE-T
installation work.
Consult a specialist when connecting cable terminals or installing trunk line
cables, etc.
•
Use the connection cable, which complies with the corresponding standard given
in Section 3.1.
•
Do not install the control and communication cables together with the main circuit
and power cables, etc.
Keep a distance of at least 100mm between them.
Failure to do so can cause a malfunction due to noise.
•
The communication and power cables connected to the module must be placed
in a duct or secured with clamps.
If the cables are not secured, inadvertent tripping can cause damage to the
module or cables or a malfunction.
•
When disconnecting any of the communication and power cables connected to
the module, do not pull it by holding the cable part.
Disconnect the cable by holding the connector connected to the module.
Failure to do so can cause a malfunction or damage to the module or cable.
(2) Connection to 10BASE-T/100BASE-TX
This section explains how to connect the QJ71MT91 to the 10BASE-T/100BASE-
TX network.
A twisted pair cable connection diagram is shown below.