GPS-721 User Manual
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GPS-721 User Manual V2.0, Oct. 2010
2.12
$AA6
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.
Description:
This command is used to read the status of the digital
input/output channels
Syntax:
$AA6[CHKSUM](CR)
$
Delimiter character
AA
Address of the module in hexadecimal format (00
to FF)
6
Command to read the digital input/output
channels
Response:
Valid Command:
!AA(Data)[CHKSUM](CR)
Invalid Command: ?AA[CHKSUM](CR)
!
Delimiter for a valid command
?
Delimiter for an invalid command
AA
Address of the module in hexadecimal format (00
to FF)
(Data)
The status of the digital input/output channels, a
four digit hexadecimal value followed by 00
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