Measurement-computing CB-7080 Manual de usuario descargar pdf (Pagina 24)

CB-7080 & CB-7080D Counter/Timer User's Guide ~AA3ETT

2-6

~AA3ETT

Description: Enable/disable the timer value of host watchdog. The host watchdog timer is a software host

watchdog. When the software host watchdog is enabled, the host must send ~** command to all modules

before the timer times-out. When the ~** command is received, the host watchdog timer is reset and restarted.

Use ~AA2 to read the host watchdog status and value.

Syntax: ~AA3ETT[chk](cr)

~ A delimiter character

AA 2-character HEX module address, from 00 to FF

E 0 is disabled and 1 is enabled

TT 2-character HEX value, from 00 to FF, unit=0.1 second

[chk] 2-character checksum. If checksum is disabled, no [chk].

(cr) 0x0D

Response:

Valid response !AA[chk](cr)

Invalid response ?AA[chk](cr)

no response Syntax error, communication error or address error

! A delimiter character indicating a valid response

? A delimiter character indicating an invalid response

AA 2-character HEX module address

[chk] 2-character checksum. If checksum is disabled  no [chk]

(cr) 0x0D

Examples:

Disable host watchdog timer of module 01

command ~013000(cr)

response !01(cr)

Host watchdog timer of module 02 is enabled and time-out time = 0.1 x 10 = 1 second.

command ~02310A(cr)

response !02(cr)

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Measurement-computing CB-7080 Manual de usuario Pagina 24