Measurement-computing CB-7080 Instrukcja Użytkownika Pobierz pdf (Strona 43)

CB-7080 & CB-7080D Counter/Timer User's Guide $AA7N

2-25

$AA7N

Description: Read the overflow flag of counter. You can use the $AA6S command to reset the counter and

clear the overflow flag.

Syntax: $AA7N[chk](cr)

$ A delimiter character

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

N=0 Counter 0

N=1 Counter 1

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

(cr) 0x0D

Response:

Valid response !AAS[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

S=0 no overflow

S=1 overflowed

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

(cr) 0x0D

Examples:

Counter 0 has overflowed. Clear the overflow flag:

command: $0170(cr)

response: !011(cr)

command: $0160(cr)

response: !01(cr)

Counter 1 is OK:

command: $0171(cr)

response: !010(cr)

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 73 74

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Measurement-computing CB-7080 Instrukcja Użytkownika Strona 43