Rockwell Automation 9330-CC ControlGuardian User's Guide - Manual (Page 116)

Using Network Diagnostics
8-7
Table 8.D
PLC-3 Diagnostic Counters
Counter: Tells you the number of:
Messages Transmitted Messages sent to another device on the DH+ link
Messages Received Messages received from another device on the DH+ link
Responses Timed Out Responses that timed out
Aborted Packets Rcv’d Messages that were sent from other stations but were aborted
before the transmit was complete
NAKS: lsap Recv’d Bad messages sent to the programming software
Illegal Packet Size Messages that were too large or too small
Duplicate Node Seen Times your station has recovered from a duplicate node condition
Link Deadtime Times the DH+ link has gone down
Nak No Mem Sent Times a message was not acknowledged because there was not
enough memory to receive it
NAKs Rcv’d NAKs (no acknowledgements) received
Duplicate Packets Duplicate messages received
Token Timeouts Token was not delivered
Retries Message retries
Duplicate Token Duplicate tokens detected
Undeliverable Messages not delivered (no more retries, NAK received)
CRC Error Messages corrupted