A&D AD-8922A Manual de instrucciones descargar pdf (Pagina 29)

１１-２ Using the Comparator Output

To use the comparator output, perform the following four steps.

1. Connect the peripheral to the AD-8922A-04 DIN connector.

2. Set the “Comparator (Cp fnc)” of the AD-8922A function setting. For details, see “4. FUNCTION

SETTINGS”.

3. Set the upper and lower limit values. For details, see “11-3 Setting the Upper and Lower Limit

values”.

4. When the weighing data is received, the comparison results will be output.

When the weighing data is equal to or less than the upper limit value, and equal to or greater than

the lower limit value, the OK comparator will be output.

Comparator output LO OK HI

Weighing data>upper limit Open Open Short

Upper limit ≥weighing data≥lower limit Open Short Open

Weighing data<lower limit Short Open Open

Whether or not to sound the buzzer when the contact output is shorted

can be set in the “Buzzer mode (bep) of the “Comparator (Cp fnc)”.

Note: When setting the upper and lower limit values, make sure that the upper limit value is

greater than the lower limit value.

Function setting

The function setting "Cp fnc” is available only when the AD-8922A-04 is installed.

Class Item

Parameter

Description

No comparison

Comparison, excluding "near zero" when the value is

stable or overloaded

Comparison, including "near zero" when the value is

stable or overloaded

Continuous comparison, excluding "near zero"

Continuous comparison, including "near zero"

Comparator

mode

Contact-outputs the second header information of the data

received. (Applicable to AD-4212A, GP and GX-K)

OFF

bep

LO buzzer

Selects whether or not to sound the

buzzer when LO.

OFF

bep-

OK buzzer

Selects whether or not to sound the

buzzer when OK.

OFF

Cp fnc

Comparator

bep

HI buzzer 1

Selects whether or not to sound the

buzzer when HI.

Factory setting

Note: “Near zero” indicates the amount of ten digits (Digit = the smallest displayable weighing

value).

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A&D AD-8922A Manual de instrucciones Pagina 29

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