Comtrol IOLM Modbus TCP - Manual (Page 20)

22 - Chapter 3. Using the Diagnostics Pages IO-Link Master Modbus/TCP Reference Manual: 2000590 Rev. A
Modbus/TCP Diagnostics
3.2. Modbus/TCP Diagnostics
The Modbus/TCP Diagnostics page may be useful when trying to troubleshoot Modbus/TCP communications
or port issues related to Modbus/TCP configuration.
The following table provides information about the Modbus/TCP Diagnostics page.
Modbus/TCP Diagnostics
Active Connections Displays the current number of active Modbus/TCP connections.
Messages Received from
Masters Displays the number of Modbus messages received from Modbus/TCP
Masters.
Responses Sent to Masters Displays the number of Modbus responses sent to Modbus/TCP Masters.
Broadcasts Received Displays the number of broadcast Modbus/TCP messages received.
Invalid Message Length
Errors Displays the number of Modbus messages received with incorrect length
fields.
Invalid Message Data Errors
Displays the number of invalid message data errors. These errors occur
when the IO-Link Master receives a message that cannot be performed due
to invalid data.