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Section 4
4
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V700-L11
User's Manual
Section 4
Data Read/Write with ID Tag
4.4.5 Test
This command is for verifying loop back communications performance between the upstream controller and
IDRW head. Upon receiving this command, the IDRW head returns the response code and test data of
command as a response to the upstream controller.
This command can be conveniently used to verify communications reliability during system designing, or to
find a cause of problem during troubleshooting.
■
Command frame structure
Unlike the read, write, same write and byte write commands, this command consists of two characters.
A test data is input as a parameter.
■
Response frame structure
The response code (normal completion "00") as well as the test data received with the command are
returned. If an error should occur, an error code is returned as a response code.
<Example of command execution>
Command : 1 0 1 2 3 4 5 6 7 8 [CR]
Response : 0 0 1 2 3 4 5 6 7 8 [CR]
Test data
(Data1)
(Data n)
Command
"1"
"0"
$0D
CR
Response code
Test data
(Data1)
(Data n)
"0"
"0"
$0D
CR
Test command
Test data
Response code
Test data