Measurement-computing CB-7080 Manuel d'utilisateur télécharger pdf (Page 21)

CB-7080 & CB-7080D Counter/Timer User's Guide ~AA0

2-3

~AA0

Description: Reads the module status. The module status will be latched until ~AA1 command is sent. If the

host watchdog is enabled and the host is down, (no ~** command received), the module status will be set to 4.

If the module status=4, all output commands are ignored.

Syntax: ~AA0[chk](cr)

~ A delimiter character

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

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

(cr) 0x0D

Response:

Valid response !AASS[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

SS 2-character HEX status value:

Bit_0, Bit_1 = reserved

Bit_2 = 0: OK,

1: host watchdog time-out

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

(cr) 0x0D

Examples:

Status of module 01 is OK:

Command: ~010(cr)

Response: 0100(cr)

Module status=04; host watchdog timed-out; HOST is down now:

Command: ~020(cr)

Response: 0204(cr)

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Measurement-computing CB-7080 Manuel d'utilisateur Page 21