Chapter 6 Wiring; Wiring Of An Ethernet Cable - Mitsubishi Electric MELSEC iQ-R Series User Manual

6
WIRING
This chapter shows the method for connecting an Ethernet cable to an MES interface module.
For connectable Ethernet cables, refer to the following:
Page 75 Ethernet (twisted pair) cable (sold separately)
6.1

Wiring of an Ethernet Cable

This section shows the procedures for connecting and disconnecting an Ethernet cable.
Connection procedure
1.
Check the insertion direction, and insert an Ethernet cable into an Ethernet port of an MES interface module until it clicks.
2.
Lightly pull the cable to check that it is securely connected.
3.
Check the SPEED LED lighting status of the Ethernet port connected with the Ethernet cable. (Page 15 PART
NAMES)
• The time required from when an Ethernet cable is connected to when the SPEED LED turns ON may vary.
Normally, it turns ON in a few seconds. However, it may take longer because the linking-up processing is
repeated due to the device condition on the line.
• When the SPEED LED does not turn ON, check if the connected Ethernet cable has any failure.
• The SPEED LED turns OFF when connecting with an Ethernet device on the network the data transmission
speed of which is 10 Mbps. Check the communication status by performing the PING test, etc.
Disconnection procedure
Pull out the Ethernet cable while pinching a clip on the connector.
Considerations for 1000BASE-T/100BASE-TX connection
In a high-speed data communication (1 Gbps/100 Mbps) via 1000BASE-T/100BASE-TX connection, a communication error
may occur due to the effect of high frequency noise generated from the equipment other than the MES interface module
system, depending on the installation environment.
The following shows the measures to be taken on MES interface module side to prevent the influence of high frequency noise
when configuring a network system.
• Do not bundle a cable with the main circuit or power cable, or do not place it near those lines.
• Place a cable in a duct.
• In the environment where a cable is susceptible to noise, use the STP cable.
• Change a target device connected with an MES interface module to one which communicates at 10 Mbps, and decrease
the data transmission speed.
6 WIRING
6.1 Wiring of an Ethernet Cable
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