Chapter 6 Wiring; Wiring Method - Mitsubishi Electric MELSEC iQ-R Series User Manual

6
WIRING
This chapter describes the wiring for EtherNet/IP.
6.1

Wiring Method

This section describes how to connect and disconnect the Ethernet cable.
Connecting the cable
1.
Push the Ethernet cable connector into the RJ71EIP91 until it clicks. Pay attention to the orientation of the connector.
2.
Lightly pull the connector to check that the connector is securely connected.
3.
Check whether the SPEED LED of the port connected with an Ethernet cable is on.
*1 The time between the cable connection and the turning on of the SPEED LED may vary. The SPEED LED usually turns on in a few
seconds. Note, however, that the time may be extended further if the link-up processing is repeated depending on the status of the
device on the line. Check whether the cables are connected properly if the SPEED LED does not turn on. ( MELSEC iQ-R EtherNet/
IP Network Interface Module User's Manual (Application))
Disconnecting the cable
1.
Unplug the Ethernet cable while pressing the latch connector down.
Precautions
• Place the Ethernet cable in a duct or clamp it. Failure to do so may lead to swinging or inadvertent pulling of dangling cable,
resulting in damage to the module or the cable or malfunction due to poor contact.
• Do not touch the core of the cable-side or module-side connector, and protect them from dirt or dust. If oil on your hands,
dirt, or dust adheres to the core, transmission loss may increase, causing communication problems.
• Check that the Ethernet cable is not disconnected or not shorted and check that the cable is connected properly.
• Do not use Ethernet cables with broken latch connectors. Doing so may cause the Ethernet cables to be disconnected or
the module to malfunction.
• Hold the connector part of the Ethernet cable when connecting and disconnecting it. Pulling the cable connected to the
module may result in damage to the module or the cable or malfunction due to poor contact.
• The maximum segment length of the Ethernet cable is 100m. However, the acceptable length may be shorter depending on
the environment where the cable is used. For details, contact the cable manufacturer.
• The bending radius of the Ethernet cable is limited. For details, check the specifications of the Ethernet cable to be used.
• The recommended maximum number of cascade connections is three. Four or more connections increase the possibility of
packet loss caused by the switching hub.
Conformance with EMC Directive
To conform to the EMC Directive, take the following a precautionary measure.
• Use a shielded twisted pair cable to connect the 100BASE-TX connector. Strip off the jacket partly from the shielded twisted
pair cable as shown below, and ground the exposed shield with as large a contact surface as possible.
(1)
(2)
*1
(1) Shield
(2) Clamp fitting
6.1 Wiring Method
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6 WIRING
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