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8.2
Connecting Ethernet cables
• Use a twisted pair cable (double shielded) compliant with Ethernet Category 5e (100BASE-TX) or higher as
an Ethernet cable. The maximum cable length between nodes is 100 m.
• When connecting Ethernet cables to servo amplifiers, be aware that CN1A is the IN port and CN1B is the
OUT port.
Connect the Ethernet cable connected to the controller or the preceding servo amplifier to CN1A (IN port). Connect the
Ethernet cable connected with the succeeding servo amplifier to CN1B (OUT port). Leave CN1B (OUT port) open if not using
it.
When the node address is not used, an incorrect connection destination sets node addresses that do not correspond to the
actual connection order and may cause a malfunction, such as an operation of an unintended axis.
The following figure shows a connection example viewed from the top surface of the servo amplifiers.
First axis servo amplifier
Ethernet cable
Controller
Second axis servo amplifier
CN1A
(IN Port)
CN1B
(OUT Port)
(OUT Port)
Final axis servo amplifier
CN1A
(IN Port)
(IN Port)
CN1B
(OUT Port)
CN1A
CN1B
8 STARTUP
8.2 Connecting Ethernet cables
8
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