Campbell Scientific CR10 CR10 Measurement and Control - Page 25

TABLE

OV4.2-2.

Additional

Keys

Allowed in

g

Telecommunications

Action

-

Change Sign, Index (same as

C)

CR

Enter/advance (same as A)

:

Colon (used in setting time)

S

or

nS

Stops

transmission

of

data

(10

second

time-out;

any

character

restads)

C

or

nC

Aborts

transmission of

Data

OV4.3

PROGRAMMING

SEOUENCE

ln

routine applications,

the

CR10 measures

sensor output

signals,

processes

the

measurements over some

time

interval and

stores

the processed

results.

A

generalized

programming

sequence

is:

1.

Enter

the execution

interval.

ln

most cases,

the

execution interval

is

determined

by

the

desired sensor

scan

rate.

2.

Enter

the

InpuVOutput instructions required

to

measure

the

sensors.

3.

lf processing

in

addition to

that

provided by

the

Output

Processing Instructions (step

5)

is

required, enter

the

appropriate

Processing

Instructions.

4.

Enter

the

Program

Control

Instruction

to

test

the

output condition and set the Output

Flag when the

condition

is

met.

For

example,

use

lnstruction 92 to

output

based on time.

Instruction

86

to

output every execution

interval.

Instruction 88 or 89 to output based on

a

comparison

of

values

in input locations.

This

instruction must precede

the

Output

Processing lnstructions which store

data

in

Final

Storage.

Instructions are described

in

Sections

9

through

12.

5.

Enter

the Output

Processing Instructions

to

store processed

data

in Final

Storage.

The

order

in

which data are

stored

is

determined

by

the

order

of

the

Output

Processing

lnstructions

in

the table.

CRlO

OVERVIEW

Repeat steps

4

through

6

for

additional

outputs on

ditferent

intervals or conditions.

NOTE:

The program

must be executed

for

output to

occur.

Therefore,

the

interval at

which the

Output

Flag is set must be evenly

divisible

by

the

execution

interval.

For

example,

with

a

2

minute

execution

interval

and a

5

minute

output

interval,

the

program

willonly

be executed on the

even

multiples

of

the 5

minute intervals, not on the odd.

Data will be output

every

10 minutes

instead of every

5

minutes.

Execution interuals and output intervals set with

f

nstruction

92

are

synchronized

with

real

time

starting

at

midnight.

OV4.4

INSTRUCTION FORMAT

Instructions

are

identified by

an

instruction

number.

Each instruction has

a

number

of

parameters

that

give

the

CR10

the

information

it

needs to execute

the

instruction.

The

CR10 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,

Instruction

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

Input

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 l0T.thermistor

probes may be

measured with a

single lnstruction

11,

Temp-

107,

with

four repetitions.

Parameter 2 specifies

the

input channel of the first

thermistor

(the

probes

must be connected

to

sequential

channels).

Parameter

4

specifies

the

Input

Storage

location

in

which

to store

measurements

from the first

thermistor.

lf

location

5

were

used

and the

first

probe was on

channel

1,

the

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Campbell Scientific CR10 CR10 Measurement and Control - Page 25

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