11-3
Section
Command/Response Reference
196
The total number of packets received by the Ethernet Unit is returned.
The total number of errors detected while the Ethernet Unit was receiving is re-
turned. The types of error detected are short packet errors, alignment errors,
and CRC errors.
The total number of packets sent by the Ethernet Unit is returned.
The total number of packet errors detected while the Ethernet Unit was sending
is returned.
The number of packets damaged by 16 collisions with data from other nodes
during Ethernet Unit transmissions.
Precautions
Counting of the total number of packets received, total number of receive errors,
total number of packets sent, total number of errors sent, and total number of
send collisions is discontinued when the counted value reaches the maximum
value.
Response Codes
Response code
Description
0000
Normal
1001
Command too large
11-3-4 INTERNODE ECHO TEST
Runs the echo test between specified nodes.
Command Block
01
08
1,998 bytes max.
Command
code
Test data
Response Block
1,998 bytes max.
Command
code
Test data
01
08
Response
code
Parameters
This command specifies the data to be sent to the specified nodes. Up to 1,998
bytes can be specified. The response sends back data identical to the data spe-
cified in the command. An abnormality is assumed if the data returned in the re-
sponse differs from the test data sent.
Precautions
The test destination node is the destination node specified in the CMND(194)
instruction operands.
Always specify the unit address of the Ethernet Unit in the CMND(194) instruc-
tion.
Response Codes
Response code
Description
0000
Normal
1001
Command too large
1002
Command too small (No test data)
Total Number of Packets
Received (Response)
Total Number of Receive
Errors (Response)
Total Number of Packets
Sent (Response)
Total Number of Errors Sent
(Response)
Total Number of Send
Collisions
Test Data (Command,
Response)