Advantech Data Acquisition Modules ADAM 4000 Manuel d'utilisateur télécharger pdf (Page 271)

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101

Digital I/O and Relay Output

Counter/Frequency Command Set

ADAM 4000 Series User’s Manual

#AAN

Name Read Counter or Frequency Value command

Description Instructs the addressed counter/frequency module at

address AA to read the counter or frequency value of

counter 0 or counter 1 and return the acquired data.

Syntax #AAN(cr)

# is a delimiter character.

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

address that you will access to.

N represents the counter number.

N=0 represents counter 0

N=1 represents counter 1

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

Response >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 an invalid

command.

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

address of the module.

(data) is the value that is retrieved by the module from

reading counter 0 or counter 1. The data format consists of

eight hexadecimal characters.

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

Example command: #120(cr)

response: >000002FE(cr)

The command requests the counter/frequency module at

address 12 to read the counter 0 and return the data. The

counter/frequency module at address 12 responds with

value 000002FE (hexadecimal) of counter 0 which is also

equivalent to 766 (decimal).

4080, 4080D

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Advantech Data Acquisition Modules ADAM 4000 Manuel d'utilisateur Page 271

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