Epson EM07ZS1647F - Manual (Page 159)

4. Troubleshooting (EtherNet/IP)
2. Diagnostic of server devices
Requests Number of requests.
Requests / s umber of requests per second.
Useful bytes Number of useful data bytes.
Useful bytes / s Number of useful data bytes per second.
Requests in error Number of requests in error.
Fieldbus I/O Rev.6 147