Advantech Data Acquisition Modules ADAM 4000 Manual do Utilizador descarregar pdf (Página 290)

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Chapter 7

ADAM 4000 Series User’s Manual

$AA0L

Name Read Minimum Input Signal Width at Low Level command

Description Read the minimum input signal width at low level for a

specified counter/frequency module to filter noise.

Syntax $AA0L(cr)

$ is a delimiter character.

AA (range 00-FF) represents the 2-character hexadecimal

address that you will access to.

0L is the Read Minimum Input Signal Width at Low Level

command.

(cr) is the terminating character, carriage return (0Dh).

Response !AA(data)(cr) if the command is valid.

?AA(cr) if an invalid operation was entered.

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 a valid command.

? is a delimiter character which indicates an invalid

command.

AA (range 00-FF) represents the 2-character hexadecimal

address of the module.

(data) is the minimum width at low level. The unit is in

μsec (microsecond) and its resolution is 1 μsec. The format

is a five digit integer that ranges from 2 μsec to 65535 μsec.

(cr) is the terminating character, carriage return (0Dh).

Example command: $050L(cr)

response: !0500084(cr)

The command requests the counter/frequency module at

address 05 to read its minimum input signal width at low

level. The module replies that its minimum input signal

width at low level is 84 μsec.

4080, 4080D

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