237 ADAM-4000 Series User Manual
Chapter 7 I/O, Relay & Counter
Frequency
4080, 4080D
7.2.3.2 $AA4
Name Read Filter Status command
Description Read the digital filter status of the addressed counter/
frequency module.
Syntax $AA4(cr)
$ is a delimiter character.
AA (range 00-FF) represents the 2-character hexadecimal
address that you will access to.
4 is the Read Filter Status command.
(cr) is the terminating character, carriage return (0Dh).
Response !AAS(cr) if the command is valid.
There is no response if the module detects a syntax or
communication error, or even if the specified address does not exist.
! is a delimiter character which indicates an invalid command.
AA (range 00-FF) represents the 2-character hexadecimal
address of the module.
S is the digital filter mode.
S = 0 means filter is disabled
S = 1 means filter is enabled
(cr) is the terminating character, carriage return (0Dh).
Example command: $034(cr)
response: !030(cr)
The command requests the counter/frequency module at
address 03 to return whether its digital filter is ON or not.
The module returns its address which indicates that its
digital filter is disabled.
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