Adesys SVM0000-I Manuel - Sayfa 14
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Sayfayı YazdırAdesys B.V. | Wateringen
6.1.6. ATL
Speaker volume; not supported but responds with OK for compatibility.
6.1.7. ATM
Speaker on/off; not supported but responds with OK for compatibility.
6.1.8. ATO
ATO facilitates switching from command mode (see +++) to modem mode. This only takes place if a
modem connection has already been established. The modem responds with CONNECT (..).
6.1.9. ATQ
ATQ switches the modem responses on and off. Some automated systems cannot process these modem
responses, in which case the response should be switched off. The response to ATQ is OK.
ATQ0
(Quiet off) modem does respond (=standard)
ATQ1
(Quiet on) modem does not respond
6.1.10. ATS
The modem has so-called S registers to store certain settings. These registers can be read and described
using ATS.
• Use a question mark (?) to read an S register.
For example, the command ATS0? reads S register 0.
• The equals sign (=) can be used to write to this register.
For example, ATS7=55 sets S register 7 to the value 55.
The modem responds with the value of the requested register followed by OK.
The SVM contains the following S registers:
• ATS0 controls automatic answering if the modem is called. If S0 is set to 0, there is no automatic
answering (=standard). Every value greater than 0 signifies the number of rings after which the modem
must pick up. The modem starts up automatically in the same way as when the ATA command is used.
The modem then responds with CONNECT (...) or BUSY. If data is transmitted via the COM port during
this time, the establishment of the connection is interrupted (without modem response).
• ATS7 determines the maximum time that may be taken to establish a modem connection. If the
connection has not been established after the specified time (in seconds), the attempt is suspended and
the modem goes into idle mode. The standard setting is 90 seconds (ATS7=90).
6.1.11. ATV
ATV determines whether the modem responses are given in the form of legible text or a numerical code.
The latter is needed for certain automated systems that control the modem. The modem responds with
OK (or 0).
ATV0
Modem gives numerical responses (numerical code)
ATV1
Modem gives text responses (=standard)
6.1.12. ATX
Response to switchboard signals; not supported, but responds with OK for compatibility.
6.1.13. ATZ
ATZ resets the modem to its initial position. All settings are returned to the last stored value and any
connection is interrupted. The modem response is OK.
6.1.14. AT\N
Fault checking on/off; not supported but responds with OK for compatibility.
6.1.15. AT%C
Data compression; not supported but responds with OK for compatibility.
6.1.16. AT&D
A modem connection can be terminated by the transmission of a DTR signal. However, if this signal is not
present, this functionality should be switched off with the AT&D command.
AT&D0
DTR signal is disregarded and is presumed to be 'ON'. It is thus possible to work with
terminals that do not have a DTR signal (=standard)
AT&D1
Does the same as the AT&D2 in the SVM
AT&D2
'hang-up'. The modem is switched 'OFF-LINE' if the DTR signal becomes inactive
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