Monitoring remote i/o adapter channels, Monitoring remote i/o adapter channels -19 – Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers User Manual
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Publication 1785-UM012D-EN-P - July 2005
Communicating with a PLC-5 Adapter Channel 7-19
Monitoring Remote I/O
Adapter Channels
To monitor channels that are configured to support adapter mode, use the
adapter mode status screen. The data displayed is stored in the diagnostic file
you defined in the adapter mode configuration screen of your programming
software.
Status Field
Location
Description
Messages sent
word 1
Displays the number of messages sent by the channel.
Messages sent with error
word 3
Displays the number of messages containing errors sent by the channel.
Messages received
word 0
Displays the number of error-free messages received by the channel.
Messages received with error word 2
Displays the number of messages containing errors received by the channel.
Messages unable to receive
word 4
Displays number of messages that contained protocol errors or packets that were garbled by
the adapter.
Link timeout
word 5
Displays the number of times a timeout occurred on the remote I/O link.
No scans received
word 6
Displays the number of times an adapter channel did not receive a packet addressed to itself.
Mode changed
word 7
Displays the number of times the adapter channel switched to online.
Protocol fault
word 8
Displays the number of invalid I/O messages the adapter channel received.
Missed turn-around time
word 9
Displays the number of times the adapter channel took longer than 2 ms to process a message
packet. The turn around-time for message packet processing is 2 ms.