Multi-Tech Systems MMV1600 ATD5551212R, Register, Read or, Write, Result, Codes, Word or, Digit

in the

when

the

command

letter

R

is

entered

at

the

end

of

a

Dialing

dialing command. When this is done, the command modem will

switch to Answer mode

as

soon

as

the

number

is

dialed

R

and then transmit a carrier signal to the other modem.

For

example,

entering

ATD5551212R

and

hitting

Return

would

cause the number 555-1212 to be dialed and cause the com-

mand

modem

to

transmit

a

carrier

signal

at

the

end

of

the

dialing

sequence.

S-Register

The

S command

can

be used

to

both assign

a

value

to

or

read

Read or

the

current

value

of

an

S-Register. (Refer toAppendix

E

of

this

Write

manual for the function of each S-Register.) The format for

reading an S-register is

to

enter

the

letter

S

(upper

case)

Sn?

followed by the register number and a question mark ? and then

hit

Return.

For

example, entering ATS7? and hitting Return will

SN=xxx

display the value of S-Register 7 in a 3 digit Decimal

form. The

number 30 would appear as 030, and the number 255 would

appear

as

255.

The format for assigning a value to an S-register is to enter the

letter S followed by the

register

number

followed

by

an

equal

sign,

and then enter the new value in a decimal format. ASCII

characters will have to

be converted to their decimal equivalents

before being entered. S-Register decimal values can range from

0 to 127 for ASCII characters, or from 0 to 255 for numeric values.

A

complete

ASCII

character Code/Hex/Decimal conversion chart

is located in Appendix A.

For

example,

if

you

wish

to

have

longer

pauses

caused

by

the

comma in a dialing command, enter ATS8=5 to assign 5 as

the value for the S-

Register S8 (meaning that the modem will

pause five seconds for the comma in the dialing

command

instead of the normal two). Or, if you wish to configure the

command

modem

to answer

incoming

calls after the 30th ring,

instead of after the first ring, enter ATS0=30 and hit Return to

assign the value 30 to S-Register S0.

Once an S-Register is selected, it remains selected until another

register is

selected.

The value of that S-Register can then be

read by entering AT? and changed by entering AT= and the new

value.

Result

The

command

modem

can

display

its

Result

Codes

on

your

Codes-

supervisory

console.

These

codes

can

appear

either

in

word

Word or

(“verbose”) or single digit (“terse”) form.

Digit

For

example,

if

after

dialing,

no

carrier

signal

is

detected,

the

V0-1

result

can

be

displayed

either

as

NO

CARRIER

or

as

the

digit

3.

The V command is used to determine which method is used.

Entering ATV0 will cause the command modem to display the

Result Codes as digits,

while ATV1 will display them as words.

If you do not select a method, the factory default setting

will

cause the command modem to use the verbose results.

The following shows the terse and verbose result codes and a

description

of

each

code.

Terse

Verbose

Description

0

OK

Your command was executed without errors.

1

CONNECT

A carrier signal has been detected 300 bps.

2

RING

A ring signal has been detected from an

incoming call.

3

NO

No carrier signal has been detected, or the

CARRIER

carrier signal was lost.

4

ERROR

An error is present in your command

sequence, e.g. invalid characters or too

many characters.

5

CONNECT

A carrier signal has been detected at

1200

1200 bps.

10

CONNECT

A carrier signal has been detected at

2400

2400 bps.