Connection Troubleshooting - GE PACSystems RX3i User Manual

Chapter 6. Diagnostics

6.4 Connection Troubleshooting

A PROFINET I/O Device can be challenging to troubleshoot if a connection to the I/O Controller will not
establish. Below are some suggestions of possible things to consider:
• Verify the network cabling. Scan the network using both the DCP and Explore PROFINET Networks
tools in Proficy Machine Edition. The I/O Controller and I/O devices should display in both tools.
• Verify the spelling of an IO-Device name in the DCP return value from the I/O Device versus the
I/O Device name in the IO-Controller configuration. Verify the I/O Controller configuration
matches the configuration active in the I/O Controller.
• Simplify the configuration. Extra, unconfigured modules are generally not an error in PROFINET, so
a simpler configuration could connect.
• Invalid configurations could be rejected. For example, disabling all Ethernet ports would lead to
significant problems, so the connection with such a configuration is rejected outright. Simplifying
the configuration back to defaults can help isolate problem areas and settings.
• PROFINET configuration occurs using the Ethernet IP settings. If an I/O Device cannot be PINGed
from the IO-Controller's network location, the problems are more likely in the network or the IO-
Device's DCP settings (such as the device has an incorrect name or no IP address) than the IO-
Device configuration.
60 PACSystems* RX3i CEP PROFINET Scanner GFK-2883E