ICP DAS, ZT-2017 and ZT-2017C AI Series User Manual, Version 1.0.1
Page 133
Copyright © 2012 by ICP DAS Co., Ltd. All Rights Reserved.
7.3
Reset Status
The reset status of a module is set when the module is powered-on, or when
the module is reset by the Module Watchdog, and is cleared after responding to
the first $AA5 command. This can be used to check whether the module has
been previously reset. When the response to the $AA5 command indicates that
the reset status has been cleared, it means that the module has not been reset
since the last $AA5 command was sent. When the response to the $AA5
command indicates that the reset status has been set and it is not the first time
the $AA5 command has been sent, it means that the module has been reset and
the digital output value has been changed to the power-on value.