ICP DAS USA I-87211W User Manual page 54

There will be no response if the command syntax is incorrect,
there is a communication error, or there is no module with the
specified address.
Examples:
Command: $035
Response: !031
Reads the reset status of module 03. The
response shows that it is the first time the $AA5
command has been sent since the module was
powered-on.
Command: $035
Response: !030
Reads the reset status of module 03.The response
shows that there has been no module reset since
the last $AA5 command was sent.
54/93 I-87211W User Manual V2.5, Oct. 2010
I-87211W User Manual