Campbell 21X Instrukcja Operatora Pobierz pdf (Strona 49)

SECTION

4.

EXTERNAL

STORAGE PERIPHERALS

Only

one

of

the

options 1x,2x,

or

30

may

be

used

in

a

program.

lf

using a SM64 Storage

Module,

output code

21 should

be used.

Use of

the SM1

92n16 is

discussed further

in Section

4.4,

prinl

output formats

are discussed

in

Section

4.5.

Section

4.3

contains specifics

on the cassette

recorder.

Note that

tape

operation

is

for

above

f reezing

temperatu

res

only.

4.1.2',4

MODE

The

*4

Mode may

be used

in

place

of

Instruction

96 to

enable or disable

printer

and/or cassette

tape

output and to

set the

printer

baud

rate.

The

first

parameter

is

a two

digit

number

determining

the

tape and

printer

status. The

second is the

baud rate

code. To

enter

a

different

status,

key

in the

appropriate

code from Table

4.1-2,

followed

by

"A".

Printer

data is

sent

in the

printable

ASCllformat

only

(Section

4.5). lf

tape or

printer

status is

changed during

execution

of

the

program

tables,

execution

stops

until

the

programs

are recompiled.

Instruction

96

should

be

used

to

send

data

to the

SM192/716

Storage Modules.

Do not use

*4

if

Instruction

96

is

used in

the

program.

TABLE

4.1-2.

*4

Mode

Parameters

and

Codes

Display

Key ID:DATA

Description

4.2

MANUALLY

INITIATED DATA

OUTPUT.

*8

AND

*9

MODES

Data may

be transferred

to tape using the

*8

Mode and

to

printer

or

Storage Module

using

*9

Mode. These

Modes

allow the user to

retrieve a

specific block

of data,

on

demand,

regardless

of whether

or not

the

21X is

programmed

for

on-line data output.

lf external storage

peripherals (cassette,

Storage Module,

etc.) are not left on-line,

the

maximum

allowable time

between

visiting

the

site

to

retrieve

data

must

be

calculated to

that data

placed

in Final

Storage are not written

over

before they

are

collected. In order

to

this

calculation, users

must

determine:

(1)

the

size of

Final

Storage,

(2)

the number of output

arrays being

generated,

(3)

the

number

of low

and/or high resolution

data

points

included in

each

output array,

and

(4)

the rate at which

output arrays

are stored

in

Final Storage.

calculating the number

of data

points per

output

array,

remember

to

add 1

overhead data

point

(2

bytes)

per

array for the

output array lD.

For

example, assume that 19,296 locations are

assigned to Final

Storage

(.A

Mode), and

that

1

output array,

containing the Array

lD

(1

memory

location),

9low resolution data

points

(9

locations)

and 5 high

resolution

data

points (10

memory locations) is

stored

each

hour. In

addition, an

output

array

with

the

Array lD

and

5

high

resolution

data

points

(11

memory

locations) is

stored

daily.

This is a total of 491

memory locations

per

day

((2O

x24) +'11).

'19,296

divided

by

491

=

39.3

days.

Therefore,

the 21X would have to

be visited every

39 days

to retrieve data,

because write-over would

begin

in

the

40th

day.

4.2.1

MANUAL TAPE DUMP

*8

MODE

lf

on-line tape storage

is

enabled, entering

the

*

Mode will suspend it. lf

left in

the

*8

Mode,

on-

line

storage will

be

re-enabled

if

no key

entries

are made

for

3.4

minutes. Setting up the

tape

recorder is

discussed

in

Section

4.3.4.

*4

04:00

A

01:XX

A

02:XX

Output

Enable

Codes

Code

Description

Output Enable

Code

(e.9.,

"10"

means

tape

enabled,

printer

disabled)

Baud Rate

Code

XO

X1

OX

1X

printer

disabled

printer

enabled, ASCII

tape disabled

tape

enabled

Baud Rate

Codes

Code

Baud Rate

00 300

01

02

03

1200

9600

76,800

4-2

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 190 191

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