Campbell DCSCOM, Руководство пользователя

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A-1
Appendix A. ‘AT’ Command Summary
This manual does not attempt to provide complete instruction on the ‘AT’ command set.
However, for convenience, the commands are summarised below. For most applications with
a Campbell Scientific datalogger and IBM PC compatible computer, the modem commands
are issued automatically by Campbell Scientific software. These commands apply only when
the modem is used as an originate modem, which is not the primary use of this modem.
Except as noted, all commands begin with ‘AT’ and end with carriage return. As an example,
the command ATDT5551212 followed by carriage return will tone dial the number that fol-
lows the ATDT then go on-line and wait up to 30 seconds for the remote modem carrier. If
the carrier is detected the result code 1 will be returned, otherwise the result code 3 will be
returned and the modem will return to the command mode.
Commands
AT Prefix to all commands (except A/)
A/ Repeat last command (not followed by carriage return)
D Dial
P Pulse
T Tone
0..9 Telephone number digits
W Wait for another dial tone
; Return to command state after dialling
, Pause
Z Reset to default settings
A Answer without ring
H Hang up
O Go to on-line state
Commands to Change Default Modes
R Call an originate modem
B CCITT mode
B1 BELL 212A mode
C Carrier off
C1 Carrier on
E Commands not echoed
E1 Commands echoed
F Half duplex
F1 Full duplex
Q Return result codes
Q1 Disable result codes
Sr? What is the value in register r?
Sr=n Set register r to value n
V Digit result codes
V1 Word result codes
Result Codes
0 OK
1 Connect
2 Ring
3 No Carrier
4 Error