Command ~AA4N
Description Read Safe Value of specified output channel
Syntax ~AA4N[CHK](cr)
~ a delimiter character
AA address of reading module (00 to FF)
4 command for read Safe Value
N specified channel for read Safe Value
[CHK] 2 characters of Checksum
(cr) Character Return(0x0D) for denote the end of command
Response
Valid Command !AA(Data)[CHK](cr)
Invalid Command ?AA[CHK](cr)
Syntax error or communication error may get no response.
! delimiter for valid command
? delimiter for invalid command.
AA address of response module (00 to FF)
(Data) Safe Value of specified channel
[CHK] 2 characters of Checksum
(cr) Character Return(0x0D) for denote the end of response
Example
Command ~0142
Response !01+00.000
Description Read Safe Value of channel 2 of address 01, response Safe Value is +00.000.
Reference ~AA5N



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