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FINS Commands Addressed to EtherNet/IP Units or Built-in EtherNet/IP Ports Appendix E
Paramet ers
IP Status (Response)
Twelve types of IP status information occupying 4 bytes each are returned in the following sequence. Each
value is returned as an 8-digit hexadecimal value.
1. Total number of IP packets received.
2. The number of IP packets discarded due to an error with the checksum in the packet header.
3. The number of IP packets discarded because the received pack et w as larger tha n th e o verall packet length
value in the packet header.
4. The number of IP packets discarded because the minimum size of the IP header data could not be stored
in the first short buffer (See note.) when an attempt was made to store the packet.
5. The number of packets discarded for one of the following reasons:
• The IP header length value in the IP header was smaller than the smallest size of the IP header.
• The size of the first short buffer (See note.) was smaller than the IP header length value in the IP header
when storing the packet.
6. The number of IP packets discarded because the IP header length was larger than the overal l pack et length
value in the packet header.
7. The number of fragmented packets received.
8. The number of received fragmented IP packets discarded because a queue for reassembly could not be
secured.
9. The number of fragmented IP packets discarded because they could not be reassemb led within 12 seconds
after being received.
10. Always 0.
11. The number of packets addressed to other networks that have been discarded.
12. Always 0.
Note Refer to MEMORY STATUS READ on page 411 for details on the short buffer.
ICMP Status (Response)
Ten types (46 items) of ICMP status information occupying 4 bytes each are returned in the following
sequence. Each value is returned as an 8-digit hexadecimal value.
1. The number of times the ICMP error routine was called. The ICMP error routine uses ICMP packets to inform
the source about errors. The routine is called when an illegal packet is received (error in IP option processing
or error in relay processing) or if the object port does not exist when using UDP.
2. Always 0.
3. Always 0.
4. Total number of outputs of each packet type during ICMP output. The 19 statistical values are returned in
the order shown below. Contents are defined for 13 types only; all other types contain 0. Only #0, #3, #14,
#16, and #18 are counted by the EtherNet/IP Unit or built-in EtherNet/IP port.
Type number Description
#0 Echo reply
#1, #2 Undefined, always 0
#3 De stination unreachable
#4 Sou rce quench
#5 Ro uting red irect
#0 #1 #2 #3 #4 #5 #15 #16 #17 #18
4 bytes