Gethostname failed

If the PLC name and socket port number entered in the Melsec property tab are not configured in your host file, the following message will appear in the log file:

Gethostname for <hostname> failed ­ errno <number>

To resolve this problem, configure the host name into your computer system as described in step 5 of the Melsec PLC Communications Configuration Checklist. Remember that the names or aliases must match exactly.

More information

Mitsubishi TCP/IP troubleshooting.