Campbell 21X Instrukcja Operatora Pobierz pdf (Strona 16)

21 X

MICROLOGGER

OVERVIEW

OV3.4 INSTRUCTION

FORMAT

Instructions

are

identified

by an instruction

number.

Each

instruction has

a

number

of

parameters

that

give

the

21X

the

information

it

needs

to execute

the instruction.

The

21X

Prompt Sheet

has

the instruction

numbers in

red, with

the

parameters

briefly

listed in

columns following

the description.

Some

parameters

are footnoted with

further

description

under the "lnstruction

Option

Codes"

heading.

For

example, lnstruction

73

stores

the

maximum value that

occurred

in

an Input

Storage Location

over

the output

interval.

The

instruction has

three

parameters

(1)

REPetitionS,

the

number

of sequential lnput

Storage

locations on which

to find maxima,

(2)

TIME,

an option of storing

the time of

occurrence with the maximum

value, and

(3)

LOC the first Input

Storage Location

operated

on

by

the Maximum Instruction. The

codes for

the

TIME

parameter

are listed in the

"lnstruction

Option Codes".

The

repetitions

parameter

specifies

how

many

times

an instruction's

function

is

to

be repeated.

For

example,

four 107 thermistor

probes,

wired

to

single-ended

channels 1

through

4,

are

measured using a single Instruction

11, Temp-

107, with four repetitions.

Parameter 2

specifies the input channel

of the

first

thermistor

(channel

1) and

parameter

4

specifies the Input

$torage

Location in which

to

store

measurements

from the first

thermistor. lf

Location 5 were used,

the temperature of

the

thermistor on channel 1 would

be

stored in

lnput

Location 5, the

temperature from channel2 in

Input

Location

6,

etc.

Detailed

descriptions

of the instructions are

given

in

Sections 9-12.

OV3.5 ENTERING

A

PROGRAM

Programs

are entered

into

the 21X in one

of

four ways:

1. Keyed

in using the 21X

keyboard.

2.

Loaded

from

a

pre-recorded

listing using

the

*D

Mode. There

are 2

types of

storage/input:

Stored

on disl</sent from

computer

(PC208

software

TERM

and EDLOG).

Stored/loaded

f rom SM1

92t1 6

Module

3. Loaded from

Storage

Module

or internal

PROM

(special

software) upon

power-up.

A

program

is created

by

keying

it directly into

the

datalogger as described in

the following

Section, or on a PC

using the

PC208

Datalogger

Support

Software.

EDLOG and TERM

are

PC208

Software

programs

used to

develop

and

send

programs

to

the

21X. EDLOG

is a

prompting

editor

for

writing

and

documenting

programs

for

Campbe

Scientific dataloggers.

Program files developed

with

EDLOG can be

downloaded directly

to the

21X

using

TERM. TERM supports

, communication via

direct

wire,

telephone, or

Radio Frequency

(RF).

Programs on disk

can be

copied

to a Storage

Module

with

SMCOM.

Using

the

*D

Mode to

save or

load a

program

from

a Storage Module

is

described in Section 1.8.

lf

the SM192/716 Storage

Module

is

connected

when

the

21X is

powered-up

the 21X will

automatically load

program

number

8,

provided

that a

program

8 is loaded in the

Storage

Module

(Section

1.8).

It

is also

possible

(with

special software)

to

create

a

PROM

(Programmable

Read Only

Memory) that contains

a

datalogger

program.

With

this

PROM

installed in the

datalogger,

the

program

willautomatically

be loaded

and

run

when

the

datalogger

is

powered-up,

requiring

only

that

the clock

be set.

OV4. PROGRAMMING EXAMPLES

We

willstart with a

simple

programming

example. There is

a brief

explanation

of

each

step

to help

you

follow

the

logic.

When

the

example uses an instruction, find it

on the

Prompt Sheet and follow through

the

of

the

parameters.

Using the Prompt

Sheet

while

going

through

these examples will

help

you

become

familiar with its format.

Sections 9-

12 have more detailed

descriptions of the

instructions.

a.

b.

ov-8

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 190 191

Komentarze do niniejszej Instrukcji

Brak uwag