Description of FINS Commands
Section
6-3
187
command code
ECHOBACK TEST
08 01
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
01 Hex
Test data
Data length
(bytes)
1
1
Bytes 1 to 1998
1) Test data
Any test data
Response format
Command code
Response code
Data format
08 Hex 01 Hex
MRES
SRES
Test data
Data length
(bytes)
1
1
1
1
Same as test data of command
2) Test data
Same data as the test data assigned by the command
Response code
Response code
Meaning
0000 Hex
Normal completion
1001 Hex
Command exceeds maximum command length
The command length exceeds 2000 bytes.
1002 Hex
Insufficient command length
Command length is less than three bytes.