Campbell 21X Manuel de l'opérateur télécharger pdf (Page 12)

INPUT/OUTPUT

INSTRUCTIONS

Specify

the conversion of a

sensor signal to

a

data value

and store it in Input Storage.

Programmable

entries

specify:

(1)

the measurement

type

(2)

the number of channels

to

measure

(3)

the input

voltage range

(4)

the Input

Storage Location

(5)

the sensor calibration

constants used

to

convert

the

sensor

output to engineering

units

l/O Instructions

also

control analog outputs

and

dioital control

Sensor

Control

21X

MICROLOGGER

OVERVIEW

PROCESS I NG I N

STRU

CTION

S

Perform calculations with

values

in Input

Storage.

Results

are returned to Input

Storage.

Arithmetic,

transcendental and

are

FIGURE

OV2-1. lnstruction Types

and Storage Areas

INTERMEDIATE

STORAGE

Provides temporary storage

for

intermediate

calculations

required

by the

OUTPUT

PROCESSING

NSTRUCTIONS; for

example, sums,

OUTPUT

PROCESSING

INSTRUCTIONS

Perform

calculations over

time on the values

updated in

Input Storage. Summaries

for

Final

Storage

are

generated

when

a

Program

Control Instruction sets

the Output Flag in

response

to time

or events.

Results may be

redirected

to Input Storage for

further

processing.

Examples

include

sums,

averages,

ma)dmin, standard

deviation,

set high

FINAL

STORAGE

Final results

from OUTPUT PROCESSING

INSTRUCTIONS

are

stored here for on-line

or

interrogated

transfer

to

e)dernal

devices

(Figure

OV5.1-1). The

newest

data

are

stored

over tn

ov-4

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