Wiring - Mitsubishi Electric MELSEC Q Series User Manual

5
PRE-OPERATION PROCEDURES
5.7

Wiring

This section describes wiring of the EtherNet/IP module.
(1) Components
(2) Wiring method
EtherNet/IP module
QJ71EIP71
RUN
ERR.
10BASE-T/
100BASE-TX
QJ71EIP71
(3) Measures for high-speed communication with 100BASE-TX
5
- 21 5.7 Wiring
For details of the components, refer to the following.
Section 2.2.2 Network components of the EtherNet/IP network
Connect the EtherNet/IP module to a switching hub with a twisted pair cable.
Switching hub
100
M
SD/
RD
Twisted pair cable
(straight cable)
Figure 5.20 Wiring method
At the high-speed communication (100Mbps) with 100BASE-TX connection, a
communication error may occur due to high frequency noise from the devices other
than the programmable controller under some installing environment.
The following measures prevent the EtherNet/IP module from being affected by high
frequency noise when configuring a network system.
(a) Cable connection
• Do not install twist pair cables together with the main circuit lines or power
cables.
• Place the twisted pair cables in a duct.
(b) 10Mbps transmission
Replace the devices to be connected to the EtherNet/IP module with 10Mbps
products and perform data communication at a transmission speed of 10Mbps.
Another EtherNet/IP network device