6.2.3 Cannot connect to the EtherNet/IP Module
The serial port seems to be available, but it is not possible to connect to the EtherNet/
IPModule.
Cause
The serial port may be in use by another application.
Recommended actions
1. Exit the EtherNet/IP Module Configuration Tool and close all other applications,
including the ones in the system tray.
2. Try again.
3. Select another serial port.
4. Try again.
6.2.4
Poor performance
Cause
The serial communication failed.
Recommended actions
1. In the Ethernet Config Tool, right-click Sub-Network in the Navigation window.
a) Select Sub-Network Status to see status and diagnostic information about
the Modbus serial network.
b) If the EtherNet/IP Module reports a large number of re-transmissions, check
your cabling or try a lower baud rate setting for the Modbus serial network, if
possible.
2. Is the Sub-Net Monitor in the Ethernet Config Tool active?
The sub-network monitor has a negative influence on the overall performance of
the gateway, and should be used only when necessary.
3. Is the Node Monitor of the Ethernet Config Tool active?
The node monitor has a negative influence on the overall performance of the
gateway, and should be used only when necessary.
6.2.5
No Modbus serial network functionality
Recommended actions
1. Connect to the device and login to the webserver. Allow the web server to
automatically configure the device's process variable slot.
2. Use the Data logger functionality of the Ethernet Config Tool to record the serial
data communication on the sub-network.
3. If no data is being transmitted, use the Ethernet Config Tool to record the serial
data communication on the sub-network.
User Guide
Troubleshooting
MMI-20019808 January 2019
User Guide 29
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