Mitsubishi Electric CC-Link IE Basic Reference Manual page 15

Wiring precautions
• Place the Ethernet cables in a duct or clamp them. If not, dangling cable may swing or inadvertently be pulled, resulting in
damage to the module or cables or malfunction due to poor contact.
• Do not touch the core of the cable-side or module-side connector, and protect it from dirt or dust. If oil from your hand, dirt
or dust is attached to the core, it can increase transmission loss, arising a problem in data link.
• Check that the Ethernet cable is not disconnected or not shorted and there is no problem with the connector connection.
• Do not use Ethernet cables with broken latches. Doing so may cause the cable to unplug or malfunction.
• Hold the connector part when connecting and disconnecting the Ethernet cable. Pulling the cable connected to the module
may result in malfunction or damage to the module or cable.
• For connectors without Ethernet cable, attached connector cover should be placed to prevent foreign matter such as dirt or
dust.
• The maximum segment length of the Ethernet cable is 100m. However, the length may be shorter depending on the
operating environment of the cable. For details, contact the manufacturer of the cable used.
• The bending radius of the Ethernet cable is limited. For details, check the specifications of the Ethernet cable to be used.
• For a cascade connection, recommended number of levels is up to three. If connected four levels or more, a packet loss
caused by switching hubs is more likely to occur.
4 PROCEDURES BEFORE OPERATION
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