Advantech RS-100-RT Bedienungsanleitung PDF herunterladen (Seite 261)

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Chapter 4 Command Set 4-177

Chapter 4

4080, 4080D

$AA8

Name Read LED Data Origin

Description Read the LED Data Origin status which determines whether

LED will display data from the counter/frequency module

directly or from the host computer

Syntax $AA8(cr)

$ is a delimiter character.

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

address of counter/frequency module that you want to interro-

gate.

8 identifies the Read LED Data Origin command.

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

Response !AAV(cr) if the command is valid.

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

There is no response if the module detects a syntax error or

communication error, or if the specified address does not exist.

! is a delimiter character indicating the command was valid.

? is a delimiter character indicating the command was invalid.

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

address of a counter/frequency input module.

V indicates the origin of the data to be displayed on the LED:

V=0 sets the LED data origin to the module's counter 0

V=1 set the LED data origin to the module's counter 1

V=2 set the LED data origin to the host computer

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

Example command: $018(cr)

response: !011(cr)

The command requests the counter/frequency module at

address 01 to return its LED Data Origin status. The module

replies that it currently displays data from counter 1.

4080D

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