Omron CS1W-LC001 Operation Manual page 204

Description of FINS Commands
187
ECHOBACK TEST
Function
Performs an echoback test with the Loop Control Unit. This test is used to
check whether or not FINS protocol communications with the Loop Control
Unit is functioning normally.
Command format
Command code
Data format
08 Hex
Data length
1
(bytes)
1) Test data
Any test data
Response format
Command code Response code
Data format
08 Hex 01 Hex MRES
Data length
1
(bytes)
2) Test data
Same data as the test data assigned by the command
Response code
Response code
0000 Hex Normal completion
1001 Hex
Command exceeds maximum command length
à The command length exceeds 2000 bytes.
1002 Hex
Insufficient command length
à Command length is less than three bytes.
Test data
01 Hex
1 Bytes 1 to 1998
SRES
1 1 1
Meaning
Section
command code
08 01
Test data
Same as test data of command
6-3