40 Rockwell Automation Publication 5069-UM007A-EN-P - February 2019
Chapter 4 Configure the Adapter
e. On the Module Properties dialog box, click the Port
Configuration category.
Desired Task Action
Let the module automatically set the
port speed and duplex settings.
Leave Auto-negotiate enabled.
Manually configure your port speed and
duplex settings.
Follow these steps.
1. Clear the Auto-negotiate port speed and duplex checkbox.
2. From the Current Port Speed pull-down menu, choose a port
speed.
3. From the Current Duplex pull-down menu, choose full-duplex.
IMPORTANT Consider the following when you configure the port settings:
• The Compact 5000™ I/O EtherNet/IP adapters only support
full-duplex mode.
• The speed and duplex settings for the devices on the same
Ethernet network must be the same to avoid transmission
errors.
• Fixed speed and full-duplex settings offer better reliability than
autonegotiate settings and are recommended for some
applications.
• If the module is connected to an unmanaged switch, leave Auto-
negotiate checked or the module fails.
• If you force the port speed and duplex with a managed switch,
the corresponding port of the managed switch must be forced to
the same settings or the module fails.
• If you connect a manually configured device to an autonegotiate
device (duplex mismatch), a high rate of transmission errors can
occur.
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