Memory Status Read - Omron SYSMAC CJ1W-EIP21 Operation Manual

FINS Commands Addressed to EtherNet/IP Units or Built-in EtherNet/IP Ports
8. The number of bytes in the resend packets.
9. The number of duplicated resend packets received.
10. The number of bytes in the duplicated resend packets received.
11. The number of out-of-range data packets received. (Always 0.)
12. The number of bytes in the out-of-range data packets received. (Always 0.)
13. The number of packets where the data was larger than the window.
14. The number of bytes in the packets where the data was larger than the window.
15. The number of packets received after closing.
16. The number of window probe packets received.
17. The number of resent ACK packets received.
18. The number of ACK packets received with no data set.
19. The number of ACK packets received.
20. The number of ACK packets received for received transmission acknowledgements (ACK).
21. The number of window advertisement packets received.
UDP Status (Response)
Three items of UDP 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 packets discarded because the size of the first short buffer was smaller than the minimum
size (28) of the IP header and UDP header when the packet was stored.
2. The number of packets discarded due to an incorrect checksum in the UDP header.
3. The number of packets discarded because the IP overall length in the IP header was shorter than the UDP
overall length in the UDP header.
Precautions
All the above values are set to 0 if network operation stops due to incorrect settings in the system setup.
Counting will be stopped when a count reaches the maximum value. The maximum values are as follows:
IP, ICMP, or UDP status: 7FFFFFFF (2,147,483,647 decimal)
TC status:
Response Codes
Response code
0000 Normal end
1001 Command too large

MEMORY STATUS READ

Reads the status of the network memory for the EtherNet/IP Unit or built-in EtherNet/IP port. The network
memory contains 2,991 bytes that are used as required as for communications buffers for communications ser-
vicing. The network memory consists of 23,928 short buffers (128 bytes each) and 64 long buffers (1,024 bytes
each).
Command Block
27 63
Command
code
FFFFFFFF (4,294,967,295 decimal)
Description
Appendix E
411