Campbell 21X Manuel de l'opérateur télécharger pdf (Page 17)

OV4.1

SAMPLE PROGRAM

1

I

The

21X

ha$ a

thermistor built

into the input

panelthat

nieasures

the

paneltemperature

and

provides

a rlference

for thermocouple

temperaturel

measurements.

In this example

21X MICROLOGGER OVERVIEW

the

21X

is

programmed

to

read the

panel

temperature every 5

seconds

and

send

the

results directly to Final Storage.

TURN ON

THE POWER SWITCH

AND

PROCEED AS INDICATED

Key

Display Shows

(lD:Data)

Explanation

HELLO

On

power-up,

the 21X displays

"hello"

while

it

checks the

memory.

after a few

seconds delay

11:111111

The

result of

the

memory

check. Each digit

represents a

memory

socket

on the

CPU

board.

1's

indicate

good

memory,

0's bad memory

(Section

1.5).

Select mode.

Enter Program

Table

1.

Advance to execution interval

(seconds).

Key

5 second

execution interval.

Enter

the 5 second execution

interval

and advance

to

the

first

program

instruction

location. The

21X

prompts

with a

P

when it is time

to

enter

an

instruction

number.

Key in l/O Instruction 17, measure the

panel

temperature in degrees C.

Enter lnstruction

17

and advance to the

first

parameter.

Key

in the

Input Storage location

in

which to

store

the measurement; location

1.

Enter

the

location number.

Note that

the

21X

knows

how

many

parameters

are

associated

with

an instruction and will

prompt

for

a new

instruction

I

number

when

parameter

entry

is

completed.

Th4 21X

is now

programmed

to read the

panel

temperature

every five seconds and

place

thetreading

in lnput

Storage

location l. Before adding any

more instructions,

we will

start

the

propram

and

display the measurement

in lnput

Storage.

1

A

5

A

17

A

00:00

01:00

01:0.0000

01:5

01:P00

01:P17

01:0000

1

01:1

A

02:P00

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