YASKAWA v1000 Installation Manual page 26

5 Installation Procedure
14.
Connect the Ethernet communication cable to the option modular connector (CN1)
port 1.
To connect the option to a network, firmly connect RJ45 8-pin shielded twisted pair
Cat5e cable(s) into the modular connector ports (see
IGMP Snooping
Switches implementing IGMP Snooping are strongly recommended. When IGMP
Snooping is used, devices will only receive the multicast packets in which they are
interested.
Communication Cable Specifications
Only use cable recommended for EtherNet/Industrial Protocol (EtherNet/IP™). Using
a cable not specifically recommended may cause the option or drive to malfunction.
Refer to the ODVA website for more information on network cabling (http://
www.odva.org).
The dual RJ45 network ports on the option board act as a switch to allow for flexibility
in cabling topology. For example, a traditional star network topology may be employed
by using a single port on the option board. Alternatively, a daisy-chained approach
may be employed by using both RJ45 ports. The daisy-chained approach reduces
the requirements of central switch ports. A ring topology is also possible.
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Figure 17 Connect the Ground Wire to the Option
YASKAWA TOEP YAICOM 15A V1000 Option Dual-Port EtherNet/IP SI-EN3D/V Installation Manual
Option ground terminal
Figure 18).