Phoenix Contact IOL MA8 PN DI8, User Manual

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Web manager interface
4022_en_A PHOENIX CONTACT
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ISDU Request Msgs From
PLC(s)
Displays the number of ISDU request messages received from the PLC(s) or other
controllers. These request messages may contain one or multiple ISDU commands.
ISDU Invalid Requests Displays the number of ISDU requests received over Modbus TCP with one or more
invalid commands.
ISDU Requests When Port
Offline
Displays the number of ISDU requests received over Modbus TCP when the IO-Link port
was offline. This can occur when:
– The IO-Link port is initializing, such as after startup.
– There is no IO-Link device attached to the port.
– The IO-Link device is not responding.
– Communication to the IO-Link device has been lost.
Valid ISDU Responses From
Port
Displays the number of valid ISDU response messages returned from the IO-Link port
interface and available to the PLC(s). The response messages contain results to the ISDU
command(s) received in the request message.
ISDU Response Timeouts Displays the number of ISDU requests that did not receive a response within the
configured ISDU Response Timeout.
Unexpected ISDU Responses Displays the number of unexpected ISDU responses. Unexpected responses may occur
when an ISDU response is received after the ISDU request has timed out. This typically
requires setting the ISDU Response Timeout to a longer value.
Maximum ISDU Request Msg
Response Time
Displays the maximum time period required to process all commands within an ISDU
request message. The response is not available until all ISDU command(s) contained in
the request have been processed.
Average ISDU Request Msg
Response Time
Displays the average time period required to process the ISDU request message(s). The
response is not available until all ISDU command(s) contained in the request have been
processed.
Minimum ISDU Request Msg
Response Time
Displays the minimum time period required to process all commands within an ISDU
request message. The response is not available until all ISDU command(s) contained in
the request have been processed.
ISDU Read Commands Displays the number of ISDU read commands received over Modbus TCP.
ISDU Write Commands Displays the number of ISDU write commands received over Modbus TCP.
ISDU NOP Commands Displays the number of ISDU NOP (no operation) commands received over
Modbus TCP.
Table 5-3 “Modbus/TCP Diagnostics” page field description [...]
Field name Description