2500_Users_Manual-.pdf - 第314页

Translation Formats General Notes Some information about data translation is listed below: Compatibility When translating data, you may use any remote source that produces formats compatible with the descriptions listed …

Translation

Formats

Instrument

Control

Codes

The

instrument

control

code

-digit

number

that

signals

controls

data

transfers.

Specifically,

the

instrument

control

code

can

used

implement

form

remote

control

that

provides

peripherals

with

flow

control

beyond

that

provided

software

handshaking.

When

using

computer

remote

control,

the

instrument

control

code

sent

immediately

preceding

the

2-digit

format

code.

The

three

values

the

instrument

control

code

and

associated

functions

are

described

below.

O-Handshake

Off

Input

Function:

Send

X-OFF

stop

the

incoming

transmission.

Send

X-ON

resume

transmission.

Output

Function:

Data

transmission

will

halted

upon

receipt

X-OFF

character;

transmission

will

resume

upon

receipt

X-ON

character.

1-Handshake

Input

Function:

Transmit

X-ON

character

when

ready

receive

data;

transmit

X-OFF

the

receiver

buffer

full;

transmit

X-ON

the

receiver

buffer

empty;

transmit

X-OFF

after

all

the

data

are

received.

Output

Function:

Transmit

PUNCH-ON

character

prior

data

transmission.

Data

transmission

will

halted

upon

receipt

X-OFF

character

and

will

resume

upon

receipt

X-ON

character.

PUNCH-OFF

character

sent

when

the

transmission

completed.

2-X-ON/X

OFF

Input

Function:

Send

X-OFF

stop

the

incoming

transmission.

Send

X-ON

resume

transmission.

Output

Function:

Transmit

data

only

after

receiving

X-ON

character.

Data

transmission

will

halted

upon

receipt

X-OFF

character;

transmission

will

resume

upon

receipt

X-ON

character.

Note:

X-ON

character

CTRL-Q,

hex.

X-OFF

character

CTRL-S,

hex.

PUNCH-ON

character

CTRL-R,

hex.

PUNCH-OFF

character

CTRL-T,

hex.

ProMaster

2500

User

Manual

D-3

Translation

Formats

General

Notes

Some

information

about

data

translation

listed

below:

Compatibility

When

translating

data,

you

may

use

any

remote

source

that

produces

formats

compatible

with

the

descriptions

listed

this

section.

Formats

with

Limited

Address

Some

formats

are

not

defined

for

use

with

address

fields

greater

than

Fields

64K.

Thus,

you

transfer

block

greater

than

64K,

the

address

fields

that

would

greater

than

64K

may

wrap

around

and

overwrite

data

transferred

data

records.

Formats

through

86,

and

may

exhibit

this

characteristic.

Hardware

Handshaking

Hardware

handshaking

may

used

compatible

with

the

host

interface

connecting

the

appropriate

lines

the

serial

port

interface.

Hardware

handshake

(CTS/DTR)

enabled

the

default.

However,

those

signals

aren't

connected,

the

programming

electronics

sense

this

and

communicate

using

software

handshake

(XON/XOFF).

The

programmer

always

uses

software

handshake

regardless

whether

hardware

handshake

enabled.

Leader/Trailer

During

output

all

formats

except

(HP

64000),

50-character

leader

precedes

the

formatted

data

and

50-character

trailer

follows.

This

leader/trailer

consists

null

characters.

the

null

count

parameter

set

hex,

then

the

leader/trailer

skipped.

set

the

null

count,

the

Commands/Configure/Edit/Communication

Parameters

screen

and

set

the

Number

Nulls

parameter.

CRC,

use

the

CRC

command

set

the

null

count.

Note:

Formats

10,

11,

and

not

function

properly

unless

you

select

parity

and

8-bit

data.

D-4

ProMaster

2500

User

Manual

BPPPPPPPPF BPPPPPPPPF BPPPPPPPPF BPPPPPPPPF

FORMAT 01 (OR 05)

BHHHHHHHHF BHHHHHHHHF BHHHHHHHHF BHHHHHHHHF

FORMAT 02 (OR 06)

B11111111F B11111111F B11111111F B11111111F

FORMAT 03 (OR 07)

LEGEND

Start Code - nonprintable STX - CTRL B is the optional Start Code

Characters such as spaces, carriage returns and line feeds may appear between bytes

End Code - nonprintable ETX - CTRL C

0074-2

Translation

Formats

ASCII

Binary

Format,

Codes

01, 02,

and

(or

05,

06,

and

07)

these

formats,

bytes

are

recorded

ASCII

codes

with

binary

digits

represented

and

Ps,

and

Hs,

and

0s,

respectively.

See

Figure

D-l.

The

ASCII

Binary

formats

not

have

addresses.

Figure

D-l

shows

sample

data

bytes

coded

each

the

three

ASCII

Binary

formats.

Incoming

bytes

are

stored

RAM

sequentially

starting

the

first

RAM

address.

Bytes

are

sandwiched

between

and

characters

and

are

separated

spaces.

Figure

D-l

Example

ASCII

Binary

Format

Data

can

also

expressed

4-bit

words.

The

programmer

generates

the

4-bit

format

upload

the

data

word

width

bits.

Any

other

characters,

such

carriage

returns

line

feeds,

may

inserted

between

and

the

The

start

code

nonprintable

STX,

which

CTRL-B

(the

same

hex

02).

The

end

code

nonprintable

ETX,

which

CTRL-C

(the

same

hex

03).

ProMaster

2500

User

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