ICP DAS USA PDS-700 Series, Руководство пользователя

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PDS Series User Manual ( V1.4, Oct. 2009) ----- 124
8.6. $AALs
Description: This function reads the latched digital Input
Syntax: $AALs[CHK](cr)
$ A delimiter character
AA The address of the module (01 only for PDS)
L A command for reading the latched digital input data
s 1 = read latch-high data
0 = read latch-low data
Response: Valid Command: !(Data)[CHK](cr)
Invalid Command: ?AA[CHK](cr)
*A syntax error or a communication error will result in no response.
! A delimiter for a valid command
? A delimiter for an invalid command
AA The address of the module (01 only for PDS)
(Data) The read data
1 = the input channel is latched
0 = the input channel is not latched
Example:
Command Response
$01L1 !FF0000
Read the latch-high data. Returns FF00 meaning that, channel 7 to 0 are all latched. (For
modules with a DI channel count between 5 and 8)
$01L1 !F00000
1.
Reads the latch-high data. Returns FF00 meaning that, channels 3 to 0 are all latched.
(For modules with a DI channel count between 1 and 4)
Related Commands:
Sec.7.3 $AAC