Measurement Computing CB-7000 DIO - Manual (Page 42)

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CB-7000 DIO Manual
2.13 $AALS
Description: Read Latched Digital Input
Command: $AALS[CHK](cr)
$ Delimiter character
AA Address of reading module (00 to FF)
L Command for reading latched digital input
S 1 = select latched high status, 0 = select latched low
Response: Valid Command: !(Data)[CHK](cr)
Invalid Command: ?AA[CHK](cr)
Syntax or communication error may get no response.
! Delimiter for valid Command
? Delimiter for invalid Command
AA Address of response module(00 to FF)
(Data) read status (Ref. Sec. 1.9) 1= the input channel is latched,
0=the input channel is not latched.
Example:
Command: $01L1 Receive: !012300
Read Address 01 latch-high data, return 0123.
Command: $01C Receive: !01
Clear Address 01 latched data, return successful.
Command: $01L1 Receive: !000000
Read Address 01 latch-high data, return 0.
Related Command:
Sec. 2.11, $AAC
Note:
The Command is not for CB-7042/42D/43/43D/66/66D/67/67D.