Omron CJ1W-ETN21 - 04-2009 Operation Manual page 218

Command/Response Reference
Note
ICMP Status (Response)
1,2,3...
#0 #1
4 bytes
6. The number of IP packets discarded because the IP header length was
larger than the overall packet 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 reassembled within 12 seconds after being received.
10. Always 0.
11. The number of packets addressed to other networks that have been dis-
carded.
12. Always 0.
Refer to 7-3-26 MEMORY STATUS READ for details on the short buffer.
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 hexa-
decimal 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 de-
fined for 13 types only; all other types contain 0. Only #0, #3, #14, #16, and
#18 are counted by the Ethernet Unit.
#2 #3 #4 #5
Type number
#0
#1, #2
#3
#4
#5
#6, #7
#8
#9, #10
#11
#12
#13
#14
#15
#16
#17
#18
#15 #16 #17
Description
Echo reply
Undefined, always 0
Destination unreachable
Source quench
Routing redirect
Undefined, always 0
Echo
Undefined, always 0
Time exceeded
Parameter problem
Time stamp
Time stamp reply
Information request
Information request reply
Address mask request
Address mask reply
Section 7-3
#18
193