ICP DAS USA M-7026, User Manual

Page: 74 / 185

M-7026
M-7026 User Manual Rev: 1.5 Date: 2016/03/10
74
2.27 $AAE
Description:
This command is used to read whether the counter edge for each Digital Input
channel of a specified module is rising or falling.
Syntax:
$AAE[CHKSUM](CR)
$
Delimiter character
AA The address of the module to be read in hexadecimal format (00 to
FF)
E The command to read the status of the counter edge for the Digital
Input channels
Response:
Valid Command: !AAnn[CHKSUM](CR)
Invalid Command: ?AA[CHKSUM](CR)
! Delimiter character to indicate a valid command
? Delimiter character to indicate an invalid command
AA The address of the responding module in hexadecimal format (00 to
FF)
nn A two-digit hexadecimal value representing the Digital Input channel,
where bit 0 corresponds to channel 0, and bit 1 corresponds to
channel 1, etc. When the bit is 0, it denotes that the counter edge for
the channel is falling, and 1 denotes that the counter edge for the
channel is rising.
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.
Examples:
Command: $01E3A Response: !01
Sets the counter edges for Digital Input channels 0, 1, 3, 4 and 5 of
module 01 to rising, and the counter edges for all other Digital Input
channels to falling. The module returns a response indicating that the
command was successful.
Command: $01E Response: !013A
Reads the status of the counter edges for all Digital Input channels on
module 01 and returns a response indicating that the command was
successful, with a value of 3A, which denotes that the counters edges for
Digital Input channels 0, 1, 3, 4 and 5 are rising and the counter edges for
all other Digital Input channels are falling.
Related Commands:
Section 2.28 $AAEnn