Yaskawa MP3200 Troubleshooting Manual - Manual (Page 52)

4.1 Troubleshooting Ethernet Communications
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4.1 Troubleshooting Ethernet Communications
When a problem occurs in Ethernet communications, it is important to recover normal system operation as
soon as possible by finding the cause of the problem and taking the necessary measures.
The basic troubleshooting procedure is outlined below.
Step 1
Check the following items.
• Ethernet cables and Ethernet communications mode
• Indicators on the front of the CPU Unit/CPU Module and on the Ethernet connector
Step 2 Try to go online with the Machine Controller from the MPE720.
Connection Cannot Be Established
Connection Can Be Established But Mes-
sage Communications Are Not Possible
Step 3
Check the connection settings for the
MPE720.
Step 3 Check the switch settings.
Step 4
Use the MPE720 to check the following
items in the detailed definitions.
• Error Status
• Trans Status (Transmission Status)
Step 5
Use the MPE720 to check the following
items in the message functions.
• Processing result and status of the mes-
sage functions
• Inputs to the message functions
• Parameters of the message functions